1
|
Colomé N, Abian J, Aloria K, Arizmendi JM, Barceló-Batllori S, Braga-Lagache S, Burlet-Schiltz O, Carrascal M, Casal JI, Chicano-Gálvez E, Chiva C, Clemente LF, Elortza F, Estanyol JM, Fernandez-Irigoyen J, Fernández-Puente P, Fidalgo MJ, Froment C, Fuentes M, Fuentes-Almagro C, Gay M, Hainard A, Heller M, Hernández ML, Ibarrola N, Iloro I, Kieselbach T, Lario A, Locard-Paulet M, Marina-Ramírez A, Martín L, Morato-López E, Muñoz J, Navajas R, Odena MA, Odriozola L, de Oliveira E, Paradela A, Pasquarello C, de Los Rios V, Ruiz-Romero C, Sabidó E, Sánchez Del Pino M, Sancho J, Santamaría E, Schaeffer-Reiss C, Schneider J, de la Torre C, Valero ML, Vilaseca M, Wu S, Wu L, Ximénez de Embún P, Canals F, Corrales FJ. Multi-laboratory experiment PME11 for the standardization of phosphoproteome analysis. J Proteomics 2022; 251:104409. [PMID: 34758407 DOI: 10.1016/j.jprot.2021.104409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/12/2021] [Accepted: 10/27/2021] [Indexed: 11/16/2022]
Abstract
Global analysis of protein phosphorylation by mass spectrometry proteomic techniques has emerged in the last decades as a powerful tool in biological and biomedical research. However, there are several factors that make the global study of the phosphoproteome more challenging than measuring non-modified proteins. The low stoichiometry of the phosphorylated species and the need to retrieve residue specific information require particular attention on sample preparation, data acquisition and processing to ensure reproducibility, qualitative and quantitative robustness and ample phosphoproteome coverage in phosphoproteomic workflows. Aiming to investigate the effect of different variables in the performance of proteome wide phosphoprotein analysis protocols, ProteoRed-ISCIII and EuPA launched the Proteomics Multicentric Experiment 11 (PME11). A reference sample consisting of a yeast protein extract spiked in with different amounts of a phosphomix standard (Sigma/Merck) was distributed to 31 laboratories around the globe. Thirty-six datasets from 23 laboratories were analyzed. Our results indicate the suitability of the PME11 reference sample to benchmark and optimize phosphoproteomics strategies, weighing the influence of different factors, as well as to rank intra and inter laboratory performance.
Collapse
Affiliation(s)
- Núria Colomé
- ProteoRed-ISCIII, Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | - Joaquín Abian
- ProteoRed-ISCIII, Instituto de Investigaciones Biomédicas de Barcelona, IIBB-CSIC/IDIBAPS, 08036 Barcelona, Spain
| | - Kerman Aloria
- ProteoRed-ISCIII, Proteomics Core Facility-SGIKER, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Jesús M Arizmendi
- Department of Biochemistry and Molecular Biology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | | | - Sophie Braga-Lagache
- Department for BioMedical Research (DBMR), Proteomics and Mass Spectrometry Core Facility, University of Bern, CH-3010 Bern, Switzerland
| | - Odile Burlet-Schiltz
- Proteomics and Mass Spectrometry of Biomolecules, Proteomics Infrastructure of Toulouse, Proteomics French Infrastructure, ProFI. Institut de Pharmacologie et Biologie Structurale (IPBS), Université de Toulouse, UPS, CNRS, Toulouse, France
| | - Montse Carrascal
- ProteoRed-ISCIII, Instituto de Investigaciones Biomédicas de Barcelona, IIBB-CSIC/IDIBAPS, 08036 Barcelona, Spain
| | - J Ignacio Casal
- ProteoRed-ISCIII, Centro de Investigaciones Biológicas-CSIC, Madrid 28040, Spain
| | - Eduard Chicano-Gálvez
- ProteoRed-ISCIII, Proteomics Unit, IMIBIC/UCO/HURS, IMIBIC Building Fl.3, 14004 Córdoba, Spain
| | - Cristina Chiva
- Proteomics Unit, Center for Genomics Regulation, Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; ProteoRed ISCIII, Proteomics Unit, Universitat Pompeu Fabra, Barcelona, Spain
| | | | - Felix Elortza
- ProteoRed-ISCIII, CIC bioGUNE, Proteomics Platform, Basque Research & Technology Alliance (BRTA), CIBERehd,Bizkaia Science and Technology Park, 48160 Derio, Spain
| | - Josep M Estanyol
- ProteoRed-ISCIII, Scientific and Technological Centers (CCiTUB), University of Barcelona, 08036 Barcelona, Spain
| | - Joaquín Fernandez-Irigoyen
- Proteored-ISCIII. Proteomics Unit, Clinical Neuroproteomics Group, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), IdiSNA, 31008 Pamplona, Spain
| | - Patricia Fernández-Puente
- Grupo de Investigación de Reumatología (GIR), Agrupación CICA-INIBIC, Universidad de A Coruña, A Coruña, Spain
| | - María José Fidalgo
- ProteoRed-ISCIII, Scientific and Technological Centers (CCiTUB), University of Barcelona, 08036 Barcelona, Spain
| | - Carine Froment
- Proteomics and Mass Spectrometry of Biomolecules, Proteomics Infrastructure of Toulouse, Proteomics French Infrastructure, ProFI. Institut de Pharmacologie et Biologie Structurale (IPBS), Université de Toulouse, UPS, CNRS, Toulouse, France
| | - Manuel Fuentes
- Department of Medicine and General Cytometry Service-Nucleus, Proteomics Unit, CIBERONC, Cancer Research Center (IBMCC/CSIC/USAL/IBSAL), Universidad de Salamanca, Spain
| | - Carlos Fuentes-Almagro
- Proteomics Unit, SCAI, University of Córdoba, Ramón y Cajal Building, Rabanales Campus, 14071, Córdoba, Spain
| | - Marina Gay
- ProteoRed-ISCIII, Institute for Research in Biomedicine (IRB Barcelona), BIST (The Barcelona Institute of Science and Technology), Baldiri i Reixac 10, 08028 Barcelona, Spain
| | | | - Manfred Heller
- Department for BioMedical Research (DBMR), Proteomics and Mass Spectrometry Core Facility, University of Bern, CH-3010 Bern, Switzerland
| | | | - Nieves Ibarrola
- ProteoRed-ISCIII, Proteomics Unit. Cancer Research Center (IBMCC/CSIC/USAL/IBSAL), Universidad de Salamanca-CSIC, Salamanca, Spain
| | - Ibon Iloro
- ProteoRed-ISCIII, CIC bioGUNE, Proteomics Platform, Basque Research & Technology Alliance (BRTA), CIBERehd,Bizkaia Science and Technology Park, 48160 Derio, Spain
| | | | | | - Marie Locard-Paulet
- Proteomics and Mass Spectrometry of Biomolecules, Proteomics Infrastructure of Toulouse, Proteomics French Infrastructure, ProFI. Institut de Pharmacologie et Biologie Structurale (IPBS), Université de Toulouse, UPS, CNRS, Toulouse, France
| | | | - Luna Martín
- ProteoRed-ISCIII, Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain
| | | | - Javier Muñoz
- ProteoRed-ISCIII, Spanish National Cancer Research Centre (CNIO), Madrid 28029, Spain
| | - Rosana Navajas
- ProteoRed-ISCIII, Centro Nacional de Biotecnologia (CSIC), 28049, Madrid, Spain
| | - M Antonia Odena
- ProteoRed-ISCIII, Proteomics Platform, Barcelona Science Park, 08028, Barcelona, Spain
| | - Leticia Odriozola
- ProteoRed-ISCIII, CIMA, University of Navarra, 31008, Pamplona, Spain
| | - Eliandre de Oliveira
- ProteoRed-ISCIII, Proteomics Platform, Barcelona Science Park, 08028, Barcelona, Spain
| | - Alberto Paradela
- ProteoRed-ISCIII, Centro Nacional de Biotecnologia (CSIC), 28049, Madrid, Spain
| | | | - Vivian de Los Rios
- ProteoRed-ISCIII, Centro de Investigaciones Biológicas-CSIC, Madrid 28040, Spain
| | - Cristina Ruiz-Romero
- Grupo de Investigación de Reumatología (GIR) - ProteoRed-ISCIII, Unidad de Proteómica, INIBIC-Complejo Hospitalario Universitario de A Coruña, SERGAS, A Coruña, Spain
| | - Eduard Sabidó
- Proteomics Unit, Center for Genomics Regulation, Barcelona Institute of Science and Technology (BIST), Barcelona, Spain; ProteoRed ISCIII, Proteomics Unit, Universitat Pompeu Fabra, Barcelona, Spain
| | - Manuel Sánchez Del Pino
- Biotechnology and Biomedicine Interdisciplinary Research Unit (ERI BIOTECMED), University of Valencia, 46100 Burjassot, Spain
| | - Jaime Sancho
- ProteoRed-ISCIII, IPBLN -CSIC, 18016 Granada, Spain
| | - Enrique Santamaría
- Proteored-ISCIII. Proteomics Unit, Clinical Neuroproteomics Group, Navarrabiomed, Complejo Hospitalario de Navarra (CHN), Universidad Pública de Navarra (UPNA), IdiSNA, 31008 Pamplona, Spain
| | - Christine Schaeffer-Reiss
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC UMR 7178, 67000, Strasbourg, France
| | - Justine Schneider
- Laboratoire de Spectrométrie de Masse BioOrganique, Université de Strasbourg, CNRS, IPHC UMR 7178, 67000, Strasbourg, France
| | - Carolina de la Torre
- ProteoRed-ISCIII, Bellvitge Biomedical Research Institute (IDIBELL), Barcelona, Spain
| | - M Luz Valero
- ProteoRed-ISCIII, Proteomics Unit, Central Service for Experimental Research (SCSIE), University of Valencia, 46100, Burjassot, Spain
| | - Marta Vilaseca
- ProteoRed-ISCIII, Institute for Research in Biomedicine (IRB Barcelona), BIST (The Barcelona Institute of Science and Technology), Baldiri i Reixac 10, 08028 Barcelona, Spain
| | - Shuai Wu
- Agilent Technologies, Inc., Santa Clara, CA 95051, USA
| | - Linfeng Wu
- Agilent Technologies, Inc., Santa Clara, CA 95051, USA
| | | | - Francesc Canals
- ProteoRed-ISCIII, Vall d'Hebron Institute of Oncology (VHIO), Barcelona 08035, Spain.
| | - Fernando J Corrales
- ProteoRed-ISCIII, Centro Nacional de Biotecnologia (CSIC), 28049, Madrid, Spain; ProteoRed-ISCIII, CIMA, University of Navarra, 31008, Pamplona, Spain.
| | -
- ProteoRed-ISCIII, Centro Nacional de Biotecnologia (CSIC), 28049, Madrid, Spain; ProteoRed-ISCIII-PRB3, Spanish Proteomics Networked Platform, Centro Nacional de Biotecnología (CSIC), 28049, Madrid, Spain
| | -
- ProteoRed-ISCIII, Centro Nacional de Biotecnologia (CSIC), 28049, Madrid, Spain; European Proteomics Association, Standardization Initiative, , Centro Nacional de Biotecnología (CSIC), 28049, Madrid, Spain
| |
Collapse
|
2
|
Segura V, Valero ML, Cantero L, Muñoz J, Zarzuela E, García F, Aloria K, Beaskoetxea J, Arizmendi JM, Navajas R, Paradela A, Díez P, Dégano RM, Fuentes M, Orfao A, Montero AG, Garin-Muga A, Corrales FJ, Pino MMSD. In-Depth Proteomic Characterization of Classical and Non-Classical Monocyte Subsets. Proteomes 2018; 6:proteomes6010008. [PMID: 29401756 PMCID: PMC5874767 DOI: 10.3390/proteomes6010008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/24/2018] [Accepted: 02/01/2018] [Indexed: 01/02/2023] Open
Abstract
Monocytes are bone marrow-derived leukocytes that are part of the innate immune system. Monocytes are divided into three subsets: classical, intermediate and non-classical, which can be differentiated by their expression of some surface antigens, mainly CD14 and CD16. These cells are key players in the inflammation process underlying the mechanism of many diseases. Thus, the molecular characterization of these cells may provide very useful information for understanding their biology in health and disease. We performed a multicentric proteomic study with pure classical and non-classical populations derived from 12 healthy donors. The robust workflow used provided reproducible results among the five participating laboratories. Over 5000 proteins were identified, and about half of them were quantified using a spectral counting approach. The results represent the protein abundance catalogue of pure classical and enriched non-classical blood peripheral monocytes, and could serve as a reference dataset of the healthy population. The functional analysis of the differences between cell subsets supports the consensus roles assigned to human monocytes.
Collapse
Affiliation(s)
- Víctor Segura
- Proteomics, Genomics and Bioinformatics Unit, Center for Applied Medical Research, University of Navarra, Pamplona 31008, Spain.
| | - M Luz Valero
- Proteomics Unit; Central Service for Experimental Research (SCSIE), University of Valencia. Dr Moliner 50, 46100 Burjassot, Spain.
| | - Laura Cantero
- Proteomics Unit; Central Service for Experimental Research (SCSIE), University of Valencia. Dr Moliner 50, 46100 Burjassot, Spain.
| | - Javier Muñoz
- Spanish National Cancer Research Centre (CNIO), Melchor Férnandez Almagro, 3, 28029 Madrid. Spain.
| | - Eduardo Zarzuela
- Spanish National Cancer Research Centre (CNIO), Melchor Férnandez Almagro, 3, 28029 Madrid. Spain.
| | - Fernando García
- Spanish National Cancer Research Centre (CNIO), Melchor Férnandez Almagro, 3, 28029 Madrid. Spain.
| | - Kerman Aloria
- Proteomics Core Facility-SGIKER, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain.
| | - Javier Beaskoetxea
- Department of Biochemistry and Molecular Biology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain.
| | - Jesús M Arizmendi
- Department of Biochemistry and Molecular Biology, University of the Basque Country, UPV/EHU, 48940 Leioa, Spain.
| | - Rosana Navajas
- Proteomics Unit, Centro Nacional de Biotecnología-CSIC, Darwin 3, 28049 Madrid, Spain.
| | - Alberto Paradela
- Proteomics Unit, Centro Nacional de Biotecnología-CSIC, Darwin 3, 28049 Madrid, Spain.
| | - Paula Díez
- Department of Medicine and General Cytometry Service-Nucleus, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), 37007 Salamanca, Spain.
- Proteomics Unit. Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), 37007 Salamanca, Spain.
| | - Rosa Mª Dégano
- Department of Medicine and General Cytometry Service-Nucleus, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), 37007 Salamanca, Spain.
- Proteomics Unit. Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), 37007 Salamanca, Spain.
| | - Manuel Fuentes
- Department of Medicine and General Cytometry Service-Nucleus, Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), 37007 Salamanca, Spain.
- Proteomics Unit. Cancer Research Centre (IBMCC/CSIC/USAL/IBSAL), 37007 Salamanca, Spain.
| | - Alberto Orfao
- Cancer Research Center. University of Salamanca-CSIC, IBSAL, 37007 Salamanca, Spain.
| | - Andrés García Montero
- Spanish National DNA Bank Carlos III, University of Salamanca, 37007 Salamanca, Spain.
| | - Alba Garin-Muga
- Proteomics, Genomics and Bioinformatics Unit, Center for Applied Medical Research, University of Navarra, Pamplona 31008, Spain.
| | - Fernando J Corrales
- Proteomics Unit, Centro Nacional de Biotecnología-CSIC, Darwin 3, 28049 Madrid, Spain.
| | - Manuel M Sánchez Del Pino
- Department of Biochemistry and Molecular Biology, University of Valencia. Dr Moliner 50, 46100 Burjassot, Spain.
- Biotechnology and Biomedicine Interdisciplinary Research Unit (ERI BIOTECMED), University of Valencia. Dr Moliner 50, 46100 Burjassot, Spain.
| |
Collapse
|
3
|
Segura V, Medina-Aunon JA, Mora MI, Martínez-Bartolomé S, Abian J, Aloria K, Antúnez O, Arizmendi JM, Azkargorta M, Barceló-Batllori S, Beaskoetxea J, Bech-Serra JJ, Blanco F, Monteiro MB, Cáceres D, Canals F, Carrascal M, Casal JI, Clemente F, Colomé N, Dasilva N, Díaz P, Elortza F, Fernández-Puente P, Fuentes M, Gallardo O, Gharbi SI, Gil C, González-Tejedo C, Hernáez ML, Lombardía M, Lopez-Lucendo M, Marcilla M, Mato JM, Mendes M, Oliveira E, Orera I, Pascual-Montano A, Prieto G, Ruiz-Romero C, Sánchez del Pino MM, Tabas-Madrid D, Valero ML, Vialas V, Villanueva J, Albar JP, Corrales FJ. Surfing transcriptomic landscapes. A step beyond the annotation of chromosome 16 proteome. J Proteome Res 2013; 13:158-72. [PMID: 24138474 DOI: 10.1021/pr400721r] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The Spanish team of the Human Proteome Project (SpHPP) marked the annotation of Chr16 and data analysis as one of its priorities. Precise annotation of Chromosome 16 proteins according to C-HPP criteria is presented. Moreover, Human Body Map 2.0 RNA-Seq and Encyclopedia of DNA Elements (ENCODE) data sets were used to obtain further information relative to cell/tissue specific chromosome 16 coding gene expression patterns and to infer the presence of missing proteins. Twenty-four shotgun 2D-LC-MS/MS and gel/LC-MS/MS MIAPE compliant experiments, representing 41% coverage of chromosome 16 proteins, were performed. Furthermore, mapping of large-scale multicenter mass spectrometry data sets from CCD18, MCF7, Jurkat, and Ramos cell lines into RNA-Seq data allowed further insights relative to correlation of chromosome 16 transcripts and proteins. Detection and quantification of chromosome 16 proteins in biological matrices by SRM procedures are also primary goals of the SpHPP. Two strategies were undertaken: one focused on known proteins, taking advantage of MS data already available, and the second, aimed at the detection of the missing proteins, is based on the expression of recombinant proteins to gather MS information and optimize SRM methods that will be used in real biological samples. SRM methods for 49 known proteins and for recombinant forms of 24 missing proteins are reported in this study.
Collapse
Affiliation(s)
- Víctor Segura
- ProteoRed-ISCIII, Center for Applied Medical Research (CIMA), University of Navarra , Pío XII, 55; Ed. CIMA, 31008 Pamplona, Spain
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Ramos I, Fernández-Rivero N, Arranz R, Aloria K, Finn R, Arizmendi JM, Ausió J, Valpuesta JM, Muga A, Prado A. The intrinsically disordered distal face of nucleoplasmin recognizes distinct oligomerization states of histones. Nucleic Acids Res 2013; 42:1311-25. [PMID: 24121686 PMCID: PMC3902905 DOI: 10.1093/nar/gkt899] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The role of Nucleoplasmin (NP) as a H2A-H2B histone chaperone has been extensively characterized. To understand its putative interaction with other histone ligands, we have characterized its ability to bind H3-H4 and histone octamers. We find that the chaperone forms distinct complexes with histones, which differ in the number of molecules that build the assembly and in their spatial distribution. When complexed with H3-H4 tetramers or histone octamers, two NP pentamers form an ellipsoidal particle with the histones located at the center of the assembly, in stark contrast with the NP/H2A-H2B complex that contains up to five histone dimers bound to one chaperone pentamer. This particular assembly relies on the ability of H3-H4 to form tetramers either in solution or as part of the octamer, and it is not observed when a variant of H3 (H3C110E), unable to form stable tetramers, is used instead of the wild-type protein. Our data also suggest that the distal face of the chaperone is involved in the interaction with distinct types of histones, as supported by electron microscopy analysis of the different NP/histone complexes. The use of the same structural region to accommodate all type of histones could favor histone exchange and nucleosome dynamics.
Collapse
Affiliation(s)
- Isbaal Ramos
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencia y Tecnología, Universidad del PaísVasco, P. O. Box 644, 48080 Bilbao, Spain, Unidad de Biofísica (Consejo Superior de Investigaciones Científicas-Universidad del País Vasco/Euskal Herriko Unibertsitatea), Barrio Sarriena s/n, 48080 Leioa Spain, Centro Nacional de Biotecnología (CNB-CSIC), Darwin 3, Campus de Cantoblanco, 28049 Madrid, Spain and Department of Biochemistry and Microbiology, University of Victoria, Victoria, British Columbia V8W 3P6, Canada
| | | | | | | | | | | | | | | | | | | |
Collapse
|
5
|
González-Fernández R, Aloria K, Valero-Galván J, Redondo I, Arizmendi JM, Jorrín-Novo JV. Proteomic analysis of mycelium and secretome of different Botrytis cinerea wild-type strains. J Proteomics 2013; 97:195-221. [PMID: 23811051 DOI: 10.1016/j.jprot.2013.06.022] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 06/10/2013] [Accepted: 06/13/2013] [Indexed: 01/14/2023]
Abstract
UNLABELLED The necrotrophic fungus Botrytis cinerea is a very damaging phytopathogen of wide host range and environmental persistence. It is difficult to control because of its genetic versatility, expressed in the many phenotypical differences among isolates. The genomes of the B. cinerea B05.10 and T4 strains have been recently sequenced, becoming a model system for necrotrophic pathogens, and thus opening new alternatives for functional genomics analysis. In this work, the mycelium and secreted proteome of six wild-type strains with different host range, and grown in liquid minimal medium, have been analyzed by using complementary gel-based (1-DE and 2-DE) and gel-free/label-free (nUPLC-MS(E)) approaches. We found differences in the protein profiles among strains belonging to both the mycelium and the secretome. A total of 47 and 51 variable proteins were identified in the mycelium and the secretome, respectively. Some of them, such as malate dehydrogenase or peptidyl-prolyl cis-trans isomerase from the mycelium, and endopolygalacturonase, aspartic protease or cerato-platanin protein from the secretome have been reported as virulence factors, which are involved in host-tissue invasion, pathogenicity or fungal development. BIOLOGICAL SIGNIFICANCE The necrotrophic fungus Botrytis cinerea is an important phytopathogen of wide host range and environmental persistence, causing substantial economic losses worldwide. In this work, the mycelium and secreted proteome of six B. cinerea wild-type strains with different host range have been analyzed by using complementary gel-based and gel-free/label-free approaches. Fungal genetic versatility was confirmed at the proteome level for both mycelium proteome and secreted proteins. A high number of hypothetical proteins with conserved domains related to toxin compounds or to unknown functions were identified, having qualitative differences among strains. The identification of hypothetical proteins suggests that the B. cinerea strains differ mostly in processes involved in adaptation to a particular environment or a growth condition, rather than in essential metabolic reactions. Proteomics can help in the identification of variable proteins related to the infection and colonization of host plant tissues, as well as of virulence and aggressiveness factors among different B. cinerea wild-type strains. This article is part of a Special Issue entitled: Trends in Microbial Proteomics.
Collapse
Affiliation(s)
- Raquel González-Fernández
- Agroforestry and Plant Biochemistry and Proteomics Research Group, Dpt. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Córdoba, Spain.
| | - Kerman Aloria
- Proteomics Core Facility-SGIKER, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - José Valero-Galván
- Agroforestry and Plant Biochemistry and Proteomics Research Group, Dpt. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Córdoba, Spain; Dpt. of Chemistry-Biology, Biomedical Sciences Institute, Autonomous University of Ciudad Juárez, 32300 Ciudad Juárez, Chihuahua, Mexico. http://www.uco.es/botrytis/
| | - Inmaculada Redondo
- Agroforestry and Plant Biochemistry and Proteomics Research Group, Dpt. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Córdoba, Spain. http://www.uco.es/botrytis/
| | - Jesús M Arizmendi
- Dpt. of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), 48940 Leioa, Spain
| | - Jesús V Jorrín-Novo
- Agroforestry and Plant Biochemistry and Proteomics Research Group, Dpt. of Biochemistry and Molecular Biology, University of Cordoba, Agrifood Campus of International Excellence (ceiA3), 14071 Córdoba, Spain. http://www.uco.es/botrytis/
| |
Collapse
|
6
|
Segura V, Medina-Aunon JA, Guruceaga E, Gharbi SI, González-Tejedo C, Sánchez del Pino MM, Canals F, Fuentes M, Casal JI, Martínez-Bartolomé S, Elortza F, Mato JM, Arizmendi JM, Abian J, Oliveira E, Gil C, Vivanco F, Blanco F, Albar JP, Corrales FJ. Spanish human proteome project: dissection of chromosome 16. J Proteome Res 2012; 12:112-22. [PMID: 23234512 DOI: 10.1021/pr300898u] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The Chromosome 16 Consortium forms part of the Human Proteome Project that aims to develop an entire map of the proteins encoded by the human genome following a chromosome-centric strategy (C-HPP) to make progress in the understanding of human biology in health and disease (B/D-HPP). A Spanish consortium of 16 laboratories was organized into five working groups: Protein/Antibody microarrays, protein expression and Peptide Standard, S/MRM, Protein Sequencing, Bioinformatics and Clinical healthcare, and Biobanking. The project is conceived on a multicenter configuration, assuming the standards and integration procedures already available in ProteoRed-ISCIII, which is encompassed within HUPO initiatives. The products of the 870 protein coding genes in chromosome 16 were analyzed in Jurkat T lymphocyte cells, MCF-7 epithelial cells, and the CCD18 fibroblast cell line as it is theoretically expected that most chromosome 16 protein coding genes are expressed in at least one of these. The transcriptome and proteome of these cell lines was studied using gene expression microarray and shotgun proteomics approaches, indicating an ample coverage of chromosome 16. With regard to the B/D section, the main research areas have been adopted and a biobanking initiative has been designed to optimize methods for sample collection, management, and storage under normalized conditions and to define QC standards. The general strategy of the Chr-16 HPP and the current state of the different initiatives are discussed.
Collapse
Affiliation(s)
- V Segura
- ProteoRed-ISCIII, Center for Applied Medical Research, CIMA, University of Navarra, Pamplona, Spain
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Acera A, Vecino E, Rodríguez-Agirretxe I, Aloria K, Arizmendi JM, Morales C, Durán JA. Changes in tear protein profile in keratoconus disease. Eye (Lond) 2011; 25:1225-33. [PMID: 21701529 PMCID: PMC3178250 DOI: 10.1038/eye.2011.105] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 02/08/2011] [Accepted: 02/08/2011] [Indexed: 01/04/2023] Open
Abstract
PURPOSE To analyze tear protein profile variations in patients with keratoconus (KC) and to compare them with those of control subjects. SUBJECTS AND METHODS Tears from 12 normal subjects and 12 patients with KC were analyzed by two-dimensional gel electrophoresis (2-DE) and liquid chromatography-mass spectrometry (LC-MS). Analysis of the 2-DE gels was performed using Progenesis SameSpots software (Nonlinear Dynamics). Proteins exhibiting high variation in expression levels (P-value <0.05) were identified using matrix-assisted laser desorption/ionization-TOF spectrometry. For LC-MS analysis, a label-free quantification approach was used. Tears were digested with trypsin, subjected to data-independent acquisition (MS(E)) analysis, and identified proteins were relatively quantified using ProteinLynx Global Server software (Waters). RESULTS The 2-DE and LC-MS analyses revealed a significant decrease in the levels of members of the cystatin family and an increase in lipocalin-1 in KC patients. A 1.43-fold decrease was observed for cystatin-S by 2-DE, and 1.69- and 1.56-fold for cystatin-SN and cystatin-SA by LC-MS, respectively. The increase in lipocalin-1 was observed by both methods with fold changes of 1.26 in the 2-DE approach and 1.31 according to LC-MS. Significant protein upregulation was also observed for Ig-κ chain C and Ig J chain proteins by 2-DE. Levels of lipophilin-C, lipophilin-A, and phospholipase A2 were decreased in tears from KC patients according to LC-MS. Serum albumin was found to be increased in KC patients according to LC-MS. CONCLUSION The results show differences in the tear protein profile of KC and control subjects. These changes are indicative of alterations in tear film stability and in interactions with the corneal surface in KC patients.
Collapse
Affiliation(s)
- A Acera
- Department of Ophthalmology, University of the Basque Country, Leioa, Spain
| | - E Vecino
- Department of Cellular Biology, University of the Basque Country, Leioa, Spain
| | - I Rodríguez-Agirretxe
- Instituto Clínico Quirurgico de Oftalmologia (ICQO), Virgen de Begoña, Bilbao, Spain
| | - K Aloria
- Proteomics Core Facility-SGiker, University of the Basque Country, Leioa, Spain
| | - J M Arizmendi
- Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain
| | - C Morales
- Instituto Clínico Quirurgico de Oftalmologia (ICQO), Virgen de Begoña, Bilbao, Spain
| | - J A Durán
- Department of Ophthalmology, University of the Basque Country, Leioa, Spain
- Instituto Clínico Quirurgico de Oftalmologia (ICQO), Virgen de Begoña, Bilbao, Spain
| |
Collapse
|
8
|
Ramos I, Martín-Benito J, Finn R, Bretaña L, Aloria K, Arizmendi JM, Ausió J, Muga A, Valpuesta JM, Prado A. Nucleoplasmin binds histone H2A-H2B dimers through its distal face. J Biol Chem 2010; 285:33771-8. [PMID: 20696766 DOI: 10.1074/jbc.m110.150664] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Nucleoplasmin (NP) is a pentameric chaperone that regulates the condensation state of chromatin extracting specific basic proteins from sperm chromatin and depositing H2A-H2B histone dimers. It has been proposed that histones could bind to either the lateral or distal face of the pentameric structure. Here, we combine different biochemical and biophysical techniques to show that natural, hyperphosphorylated NP can bind five H2A-H2B dimers and that the amount of bound ligand depends on the overall charge (phosphorylation level) of the chaperone. Three-dimensional reconstruction of NP/H2A-H2B complex carried out by electron microscopy reveals that histones interact with the chaperone distal face. Limited proteolysis and mass spectrometry indicate that the interaction results in protection of the histone fold and most of the H2A and H2B C-terminal tails. This structural information can help to understand the function of NP as a histone chaperone.
Collapse
Affiliation(s)
- Isbaal Ramos
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencia y Tecnología, Universidad del País Vasco, 48080 Bilbao, Spain
| | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Abstract
Nucleoplasmin (NP) mediates nucleosome assembly by removing basic proteins from sperm chromatin and exchanging them with histones. This function is modulated by phosphorylation of NP at multiple sites. NP is pentameric, each monomer consisting of two domains: a core, which forms a stable ring-like pentamer, and a tail, that holds a polyglutamic tract and the nuclear localization signal. In the present study, we have explored the role of the core domain in the functionality of NP. Despite lacking the poly-Glu region, a putative binding site for basic proteins, the isolated core domain of the hyperphosphorylated protein isolated from eggs of Xenopus laevis is able to bind sperm basic proteins and decondense chromatin, in contrast to the inactive, non-phosphorylated recombinant core. This activity can be reproduced artificially in the recombinant core domain through mutation of putative phosphorylation sites to aspartate, thus mimicking the charge effect of phosphorylation. The mutated residues locate in flexible or loop regions exposed on the "distal face" of the core pentamer, where a short acidic region is also found, indicating that phosphorylation might activate the core domain of NP by generating a strong localized negative potential. Our results show that the phosphorylated core domain of NP is active in chromatin decondensation, thus it could contribute together with the poly-Glu containing tail in displaying a binding surface for sperm basic proteins on the NP pentamer.
Collapse
Affiliation(s)
- Sonia Bañuelos
- Unidad de Biofísica (CSIC-UPV/EHU), Aptdo. 644, 48080, Bilbao, Spain
| | | | | | | | | | | |
Collapse
|
10
|
Hierro A, Arizmendi JM, De Las Rivas J, Urbaneja MA, Prado A, Muga A. Structural and functional properties of Escherichia coli
-derived nucleoplasmin. ACTA ACUST UNITED AC 2003. [DOI: 10.1046/j.1432-1327.2001.02043.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
11
|
Hierro A, Arizmendi JM, Bañuelos S, Prado A, Muga A. Electrostatic interactions at the C-terminal domain of nucleoplasmin modulate its chromatin decondensation activity. Biochemistry 2002; 41:6408-13. [PMID: 12009903 DOI: 10.1021/bi020002r] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The chromatin decondensation activity, thermal stability, and secondary structure of recombinant nucleoplasmin, of two deletion mutants, and of the protein isolated from Xenopus oocytes have been characterized. As previously reported, the chromatin decondensation activity of recombinant, unphosphorylated nucleoplasmin is almost negligible. Our data show that deletion of 50 residues at the C-terminal domain of the protein, containing the positively charged nuclear localization sequence, activates its chromatin decondensation ability and decreases its stability. Interestingly, both the decondensation activity and thermal stability of this deletion mutant resemble those of the phosphorylated protein isolated from Xenopus oocytes. Deletion of 80 residues at the C-terminal domain, containing the above-mentioned positively charged region and a poly(Glu) tract, inactivates the protein and increases its thermal stability. These findings, along with the effect of salt on the thermal stability of these proteins, suggest that electrostatic interactions between the positive nuclear localization sequence and the poly(Glu) tract, at the C-terminal domain, modulate protein activity and stability.
Collapse
Affiliation(s)
- Aitor Hierro
- Unidad de Biofísica (CSIC-UPV/EHU) and Departamento de Bioquímica y Biología Molecular, Universidad del País Vasco, Aptdo. 644, 48080 Bilbao, Spain
| | | | | | | | | |
Collapse
|
12
|
Hierro A, Arizmendi JM, De Las Rivas J, Urbaneja MA, Prado A, Muga A. Structural and functional properties of Escherichia coli-derived nucleoplasmin. A comparative study of recombinant and natural proteins. Eur J Biochem 2001; 268:1739-48. [PMID: 11248694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Fourier transform infrared spectroscopy, circular dichroism and prediction techniques have been used to investigate the conformational properties of nucleoplasmin isolated from oocytes and eggs of Xenopus. laevis and overexpressed in Escherichia coli. A simple and fast method allows purification of recombinant nucleoplasmin free of truncated and/or aggregated forms, and therefore provides a suitable sample to carry out the structural and functional comparison between these proteins. The secondary structure of the three proteins estimated from both spectroscopic techniques was very similar, and was found to be 31--33% loops, 27--34% beta structure, 22--26% turns and 9-14% alpha helix. Prediction studies, in good agreement with experimental data, also suggest that beta structure is the major regular conformation, and that loops and turns are the most abundant conformational features within the secondary structure of nucleoplasmin. Furthermore, the spectroscopic characterization of a truncated version of the protein, lacking 80 residues at the C-terminus, and the prediction data indicate that the secondary structure elements of the protein are segregated into two regions. The N-terminal fragment (comprising residues 1--120) which holds all the putative beta strands, and the solvent-exposed C-terminal region, that is suggested to be enriched in turn and loop structures. The phosphate/protein monomer molar ratios, obtained from chemical analysis and mass spectrometry, are 0, 3 and 7--10 for recombinant, oocyte and egg nucleoplasmin, respectively. Phosphorylation does not significantly affect the secondary structure of the protein, but clearly modulates its ability to decondense sperm nuclei and to remove basic proteins from DNA.
Collapse
Affiliation(s)
- A Hierro
- Unidad de Biofísica (CSIC-UPV/EHU), Universidad del País Vasco, Aptdo. 644, 48080 Bilbao, Spain
| | | | | | | | | | | |
Collapse
|
13
|
Elortza F, Asturias JA, Arizmendi JM. Chloroplast NADH dehydrogenase from Pisum sativum: characterization of its activity and cloning of ndhK gene. Plant Cell Physiol 1999; 40:149-54. [PMID: 10202810 DOI: 10.1093/oxfordjournals.pcp.a029522] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The pea chloroplast ndhK gene coding for a component of a NADH-plastoquinone oxidoreductase has been cloned and sequenced. This gene codes for a polypeptide of 227 amino acids and a predicted molecular mass of 25,495 Da which belongs to the family of the 20 kDa PSST subunit of the bovine mitochondrial complex I. A fragment of this gene has been overexpressed in Escherichia coli, and antibodies against the expressed polypeptide recognize a protein of the predicted molecular mass from pea thylakoid membranes. This polypeptide is a component of a protein complex with NADH dehydrogenase activity and is not associated with ferredoxin-NADP+ reductase.
Collapse
Affiliation(s)
- F Elortza
- Biokimika eta Biologia Molekularreko Saila, Euskal Herriko Unibertsitatea, Bilbao, Spain
| | | | | |
Collapse
|
14
|
Pilkington SJ, Arizmendi JM, Fearnley IM, Runswick MJ, Skehel JM, Walker JE. Structural organization of complex I from bovine mitochondria. Biochem Soc Trans 1993; 21:26-31. [PMID: 8449305 DOI: 10.1042/bst0210026] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- S J Pilkington
- Medical Research Council Laboratory of Molecular Biology, Cambridge, U.K
| | | | | | | | | | | |
Collapse
|
15
|
Arizmendi JM, Skehel JM, Runswick MJ, Fearnley IM, Walker JE. Complementary DNA sequences of two 14.5 kDa subunits of NADH:ubiquinone oxidoreductase from bovine heart mitochondria. Completion of the primary structure of the complex? FEBS Lett 1992; 313:80-4. [PMID: 1426273 DOI: 10.1016/0014-5793(92)81189-s] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The amino acid sequences of two nuclear-encoded subunits of complex I from bovine heart mitochondria have been determined. Both proteins have an apparent molecular weight of 14.5 kDa and their N-alpha-amino groups are acetylated. They are known as subunits B14.5a and B14.5b. Neither protein is evidently related to any known protein and their functions are obscure. A total of 34 nuclear-encoded subunits of bovine complex I have now been sequenced and it is thought that the primary structure of the complex is now complete, although with such a complicated structure it is difficult to be certain that there are no other subunits remaining to be sequenced. Seven additional hydrophobic subunits of the enzyme are encoded in mitochondrial DNA, and therefore bovine heart complex I is an assembly of about 41 different proteins. If it is assumed that there is one copy of each protein in the assembly, these polypeptides contain 7,955 amino acids in their sequences, more than are found in the Escherichia coli ribosome, which contains 7,336 amino acids in its 32 polypeptides.
Collapse
Affiliation(s)
- J M Arizmendi
- Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | | | | | | | | |
Collapse
|
16
|
Walker JE, Arizmendi JM, Dupuis A, Fearnley IM, Finel M, Medd SM, Pilkington SJ, Runswick MJ, Skehel JM. Sequences of 20 subunits of NADH:ubiquinone oxidoreductase from bovine heart mitochondria. Application of a novel strategy for sequencing proteins using the polymerase chain reaction. J Mol Biol 1992; 226:1051-72. [PMID: 1518044 DOI: 10.1016/0022-2836(92)91052-q] [Citation(s) in RCA: 137] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
NADH:ubiquinone oxidoreductase, the first enzyme in the respiratory electron transport chain of mitochondria, is a membrane-bound multi-subunit assembly, and the bovine heart enzyme is now known to contain about 40 different polypeptides. Seven of them are encoded in the mitochondrial DNA; the remainder are the products of nuclear genes and are imported into the organelle. The primary structures of 12 of the nuclear coded subunits have been described and those of a further 20 are described here. The subunits have been sequenced by following a strategy based on the polymerase chain reaction. This strategy has been tailored from existing methods with the twofold aim of avoiding the use of cDNA libraries, and of obtaining a cDNA sequence rapidly with minimal knowledge of protein sequence, such as can be determined in a single N-terminal sequence experiment on a polypeptide spot on a two-dimensional gel. The utility and speed of this strategy have been demonstrated by sequencing cDNAs encoding 32 nuclear-coded-membrane associated proteins found in bovine heart mitochondria, and the procedures employed are illustrated with reference to the cDNA sequence of the 20 subunits of NADH:ubiquinone oxidoreductase that are presented. Extensive use has also been made of electrospray mass spectrometry to measure molecular masses of the purified subunits. This has corroborated the protein sequences of subunits with unmodified N terminals, and their measured molecular masses agree closely with those calculated from the protein sequences. Nine of the subunits, B8, B9, B12, B13, B14, B15, B17, B18 and B22 have modified alpha-amino groups. The measured molecular masses of subunits B8, B13, B14 and B17 are consistent with the post-translational removal of the initiator methionine and N-acetylation of the adjacent amino acid. The initiator methionine of subunit B18 has been removed and the N-terminal glycine modified by myristoylation. Subunits B9 and B12 appear to have N-terminal and other modifications of a hitherto unknown nature. The sequences of the subunits of bovine complex I provide important clues about the location of iron-sulphur clusters and substrate and cofactor binding sites, and give valuable information about the topology of the complex. No function has been ascribed to many of the subunits, but some of the sequences indicate the presence of hitherto unsuspected biochemical functions. Most notably the identification of an acyl carrier protein in both the bovine and Neurospora crassa complexes provides evidence that part of the complex may play a role in fatty acid biosynthesis in the organelle, possibly in the formation of cardiolipin.(ABSTRACT TRUNCATED AT 400 WORDS)
Collapse
Affiliation(s)
- J E Walker
- Medical Research Council Laboratory of Molecular Biology, Cambridge, U.K
| | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Arizmendi JM, Runswick MJ, Skehel JM, Walker JE. NADH: ubiquinone oxidoreductase from bovine heart mitochondria. A fourth nuclear encoded subunit with a homologue encoded in chloroplast genomes. FEBS Lett 1992; 301:237-42. [PMID: 1577158 DOI: 10.1016/0014-5793(92)80248-f] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The amino acid sequence has been determined of the precursor of a nuclear encoded 20 kDa subunit of complex I from bovine heart mitochondria. The sequence of the mature protein is related to a protein of uncertain function, hitherto known as psbG, encoded in the chloroplast genomes of higher plants. Open reading frames encoding homologues of psbG have also been detected in bacteria and in the mitochondrial genome of Paramecium tetraurelia. The chloroplast psbG gene is found between ndhC and ndhJ, which encode homologues of ND3, a hydrophobic subunit of complex I encoded in the bovine mitochondrial genome, and of the nuclear encoded 30 kDa subunit of complex I. This 20 kDa protein is the eleventh out of the forty or more subunits of bovine complex I with a chloroplast encoded homologue, and its sequence provides further support for the presence in chloroplasts of a multisubunit enzyme related to complex I that could be involved in chlororespiration. The strict conservation of three cysteines suggests that the subunit might be an iron-sulphur protein.
Collapse
Affiliation(s)
- J M Arizmendi
- Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | | | | | | |
Collapse
|
18
|
Arizmendi JM, Serra JL. Purification and some properties of the nitrite reductase from the cyanobacterium Phormidium laminosum. Biochim Biophys Acta 1990; 1040:237-44. [PMID: 2119228 DOI: 10.1016/0167-4838(90)90082-q] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Assimilatory ferredoxin-nitrite reductase (EC 1.7.7.1, ammonia: ferredoxin oxidoreductase) has been purified 5300-fold with a specific activity of 625 units/mg protein from the filamentous non-heterocystous cyanobacterium Phormidium laminosum. The enzyme was soluble and consisted of a single polypeptidic chain of 54 kDa. It catalyzed the reduction of nitrite to ammonia using ferredoxin or flavodoxin as electron donor. Methyl and benzyl viologens were also effective as electron donors but neither flavins nor NAD(P)H were. The apparent Michaelis constants for nitrite, ferredoxin and methyl viologen were 40, 22 and 215 microM, respectively. Nitrite reductase activity was inhibited effectively by cyanide and thiol reagents. The enzyme exhibited absorption maxima at 281, 391 (Soret), 570 (alpha) and 695 nm, with epsilon 391 of 4.3 x 10(4) M-1 cm-1, and an absorbance ratio A281/A391 of 1.95, suggesting the presence of siroheme as prosthetic group. These results show that this enzyme is similar to those of eukaryotic organisms.
Collapse
Affiliation(s)
- J M Arizmendi
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad del País Vasco, Bilbao, Spain
| | | |
Collapse
|
19
|
Affiliation(s)
- J M Arizmendi
- Department of Biochemistry and Molecular Biology, Faculty of Sciences, University of The Basque Country, Bilbao, Spain
| | | |
Collapse
|
20
|
Serra JL, Ibarlucea JM, Arizmendi JM, Llama MJ. Purification and properties of the assimilatory nitrite reductase from barley Hordeum vulgare leaves. Biochem J 1982; 201:167-70. [PMID: 7082281 PMCID: PMC1163622 DOI: 10.1042/bj2010167] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The assimilatory nitrite reductase (ferredoxin: nitrite oxidoreductase, EC 1.7.7.1) from barley (Hordeum vulgare L.) leaves has been purified over 1500-fold with a recovery of 30% and a specific activity of 84 mumol of nitrite reduced/min per mg of protein. The purification procedure includes (NH4)2SO4 fractionation, ion-exchange and molecular-sieve chromatographies and, finally, ferredoxin-Sepharose-4B affinity chromatography. The enzyme appears homogeneous by polyacrylamide gel electrophoresis and consists of a single polypeptide chain with an Mr of 61 000. The absorption spectrum of the pure enzyme was typical of a haem-containing protein. The enzyme showed low thermostability and was specific for ferredoxin (Km 0.4 microM), although reduced Methyl Viologen (Km 120 microM) was also effective. The same Km value for nitrite (250 microM) was obtained with both electron carriers. Cyanide acted as a powerful pure competitive inhibitor of enzyme with respect to nitrite (Ki 40 microM). Thiol-blocking agents also caused considerable inhibition, but only the ferredoxin-driven activity was significantly inhibited by sulphite and hydroxylamine.
Collapse
|