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Cho HB, Ahn JH, Yang HG, Lee J, Park WJ, Kim YW. Effects of pH and NaCl on hydrolysis and transpeptidation activities of a salt-tolerant γ-glutamyltranspeptidase from Bacillus amyloliquefaciens S0904. Food Sci Biotechnol 2021; 30:853-860. [PMID: 34249391 DOI: 10.1007/s10068-021-00928-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/10/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022] Open
Abstract
Bacillus amyloliquefaciens S0904 was selected as a hyperproducer of a glutamine-hydrolyzing enzyme which was identified as a γ-glutamyltranspeptidase catalyzing both hydrolysis and transpeptidation of glutamyl substrates. The signal peptide-truncated recombinant enzyme (rBAGGT) showed two-fold enhanced specific activity for hydrolysis and optimum pH shift to pH 7 from pH 6 compared with the wild type. The hydrolysis activity of rBAGGT was tolerant against NaCl up to 2.5 M, whereas the transpeptidation activity decreased by NaCl. At pH 6, the addition of 1.5 M NaCl not only enhanced the hydrolysis activity but also inhibited the transpeptidation activity to be ignorable. By contrast, at pH 9 in the absence of NaCl, the alkaline pH-favored transpeptidation activity was 99% of the maximum with only 15% of the maximum hydrolysis activity. In conclusion, the hydrolysis and transpeptidation activities of the recombinant BAGGT is controllable by changing pH and whether or not to add NaCl. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-021-00928-6.
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Affiliation(s)
- Hye-Bin Cho
- Department of Food and Biotechnology, Korea University, Sejong, 30019 Republic of Korea
| | - Jun-Ho Ahn
- Department of Food and Biotechnology, Korea University, Sejong, 30019 Republic of Korea
| | - Hyeon-Gyu Yang
- Department of Food and Biotechnology, Korea University, Sejong, 30019 Republic of Korea
| | - Jaeick Lee
- Department of Food and Biotechnology, Korea University, Sejong, 30019 Republic of Korea
| | - Wu-Jin Park
- R&D Center, Nongshim Co., Seoul, 07057 Republic of Korea
| | - Young-Wan Kim
- Department of Food and Biotechnology, Korea University, Sejong, 30019 Republic of Korea
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2
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Mendoza C, Nagidi SH, Mizrachi D. Molecular Characterization of the Extracellular Domain of Human Junctional Adhesion Proteins. Int J Mol Sci 2021; 22:ijms22073482. [PMID: 33801758 PMCID: PMC8037251 DOI: 10.3390/ijms22073482] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 03/24/2021] [Accepted: 03/25/2021] [Indexed: 12/22/2022] Open
Abstract
The junction adhesion molecule (JAM) family of proteins play central roles in the tight junction (TJ) structure and function. In contrast to claudins (CLDN) and occludin (OCLN), the other membrane proteins of the TJ, whose structure is that of a 4α-helix bundle, JAMs are members of the immunoglobulin superfamily. The JAM family is composed of four members: A, B, C and 4. The crystal structure of the extracellular domain of JAM-A continues to be used as a template to model the secondary and tertiary structure of the other members of the family. In this article, we have expressed the extracellular domains of JAMs fused with maltose-binding protein (MBP). This strategy enabled the work presented here, since JAM-B, JAM-C and JAM4 are more difficult targets due to their more hydrophobic nature. Our results indicate that each member of the JAM family has a unique tertiary structure in spite of having similar secondary structures. Surface plasmon resonance (SPR) revealed that heterotypic interactions among JAM family members can be greatly favored compared to homotypic interactions. We employ the well characterized epithelial cadherin (E-CAD) as a means to evaluate the adhesive properties of JAMs. We present strong evidence that suggests that homotypic or heterotypic interactions among JAMs are stronger than that of E-CADs.
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Affiliation(s)
- Christopher Mendoza
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA;
| | - Sai Harsha Nagidi
- Department of Molecular Microbiology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA;
| | - Dario Mizrachi
- Department of Physiology and Developmental Biology, College of Life Sciences, Brigham Young University, Provo, UT 84602, USA;
- Correspondence:
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Anjo SI, Simões I, Castanheira P, Grãos M, Manadas B. Use of recombinant proteins as a simple and robust normalization method for untargeted proteomics screening: exhaustive performance assessment. Talanta 2019; 205:120163. [DOI: 10.1016/j.talanta.2019.120163] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/13/2019] [Accepted: 07/17/2019] [Indexed: 01/13/2023]
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4
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Russo A, Scognamiglio PL, Hong Enriquez RP, Santambrogio C, Grandori R, Marasco D, Giordano A, Scoles G, Fortuna S. In Silico Generation of Peptides by Replica Exchange Monte Carlo: Docking-Based Optimization of Maltose-Binding-Protein Ligands. PLoS One 2015; 10:e0133571. [PMID: 26252476 PMCID: PMC4529233 DOI: 10.1371/journal.pone.0133571] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 06/27/2015] [Indexed: 12/25/2022] Open
Abstract
Short peptides can be designed in silico and synthesized through automated techniques, making them advantageous and versatile protein binders. A number of docking-based algorithms allow for a computational screening of peptides as binders. Here we developed ex-novo peptides targeting the maltose site of the Maltose Binding Protein, the prototypical system for the study of protein ligand recognition. We used a Monte Carlo based protocol, to computationally evolve a set of octapeptides starting from a polialanine sequence. We screened in silico the candidate peptides and characterized their binding abilities by surface plasmon resonance, fluorescence and electrospray ionization mass spectrometry assays. These experiments showed the designed binders to recognize their target with micromolar affinity. We finally discuss the obtained results in the light of further improvement in the ex-novo optimization of peptide based binders.
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Affiliation(s)
- Anna Russo
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe, Udine, Italy
- Department of Medical Biotechnology, University of Siena, Policlinico Le Scotte, Viale Bracci, Siena, Italy
| | - Pasqualina Liana Scognamiglio
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi- University of Naples “Federico II”, DFM-Scarl, Naples, Italy
| | | | - Carlo Santambrogio
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, Milan, Italy
| | - Rita Grandori
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza della Scienza, Milan, Italy
| | - Daniela Marasco
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi- University of Naples “Federico II”, DFM-Scarl, Naples, Italy
- * E-mail: (SF); (DM)
| | - Antonio Giordano
- Sbarro Institute for Cancer Research and Molecular Medicine & Center for Biotechnology Temple University Philadelphia, Pennsylvania, United States of America
- Department of Medicine, Surgery & Neuroscience University of Siena, Strada delle Scotte n. 6, Siena, Italy
| | - Giacinto Scoles
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe, Udine, Italy
- Department of Biology, Temple University, Philadelphia, Pennsylvania, United States of America
| | - Sara Fortuna
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe, Udine, Italy
- * E-mail: (SF); (DM)
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Medrano FJ, de Souza CS, Romero A, Balan A. Structure determination of a sugar-binding protein from the phytopathogenic bacterium Xanthomonas citri. Acta Crystallogr F Struct Biol Commun 2014; 70:564-71. [PMID: 24817711 PMCID: PMC4014320 DOI: 10.1107/s2053230x14006578] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/25/2014] [Indexed: 02/05/2023] Open
Abstract
The uptake of maltose and related sugars in Gram-negative bacteria is mediated by an ABC transporter encompassing a periplasmic component (the maltose-binding protein or MalE), a pore-forming membrane protein (MalF and MalG) and a membrane-associated ATPase (MalK). In the present study, the structure determination of the apo form of the putative maltose/trehalose-binding protein (Xac-MalE) from the citrus pathogen Xanthomonas citri in space group P6522 is described. The crystals contained two protein molecules in the asymmetric unit and diffracted to 2.8 Å resolution. Xac-MalE conserves the structural and functional features of sugar-binding proteins and a ligand-binding pocket with similar characteristics to eight different orthologues, including the residues for maltose and trehalose interaction. This is the first structure of a sugar-binding protein from a phytopathogenic bacterium, which is highly conserved in all species from the Xanthomonas genus.
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Affiliation(s)
- Francisco Javier Medrano
- Department of Chemical and Physical Biology, Centro de Investigaciones Biologicas (CSIC), Madrid, Spain
| | - Cristiane Santos de Souza
- Departamento de Microbiologia, Instituto de Ciências Biomédicas II, Universidade de São Paulo, Cidade Universitária, SP, Brazil
| | - Antonio Romero
- Department of Chemical and Physical Biology, Centro de Investigaciones Biologicas (CSIC), Madrid, Spain
| | - Andrea Balan
- Departamento de Microbiologia, Instituto de Ciências Biomédicas II, Universidade de São Paulo, Cidade Universitária, SP, Brazil
- Laboratório Nacional de Biociências (LNBio), Centro de Pesquisas em Energia e Materiais (CNPEM), Campinas, SP, Brazil
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Gohel S, Singh S. Cloning and expression of alkaline protease genes from two salt-tolerant alkaliphilic actinomycetes in E. coli. Int J Biol Macromol 2012; 50:664-71. [DOI: 10.1016/j.ijbiomac.2012.01.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2011] [Revised: 01/21/2012] [Accepted: 01/25/2012] [Indexed: 10/14/2022]
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Liu L, Wang R, He W, He F, Huang G. Cloning and soluble expression of mature alpha-luffin from Luffa cylindrica and its antitumor activities in vitro. Acta Biochim Biophys Sin (Shanghai) 2010; 42:585-92. [PMID: 20705600 DOI: 10.1093/abbs/gmq056] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Luffin-a, a single-chain Type I ribosome-inactivating protein, which is known to be the most toxic of the luffin family and apparently possesses antitumor activity, was isolated from Luffa cylindrica seeds. In the present study, mature alpha-luffin was cloned from L. cylindrica and it was found that mature alpha-luffin shared 96% amino acid similarity with luffin-a. The recombinant mature alpha-luffin was successfully expressed in a partly soluble form in Escherichia coli after optimization of expression conditions. The effects of the recombinant protein on bacterial growth and its in vitro protein synthesis inhibition activity were tested. Then, its antitumor activities against different human cancer cell lines were evaluated by CCK-8 assay and flow cytometry. The results indicated that the recombinant alpha-luffin was slightly toxic to E. coli. It could inhibit protein synthesis in the rabbit reticulocyte lysate system. At the same time, it inhibited the growth of the tumor cell lines in a dose- and time-dependent manner. Additionally, recombinant alpha-luffin was able to induce cell death by apoptosis. The cytotoxicity of alpha-luffin towards tumor cells makes it a potential antitumor agent.
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Affiliation(s)
- Liling Liu
- Department of Dermatology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
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8
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Improvement in soluble expression levels of a diabody by exchanging expression vectors. Protein Expr Purif 2008; 62:15-20. [DOI: 10.1016/j.pep.2008.07.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2008] [Revised: 07/05/2008] [Accepted: 07/09/2008] [Indexed: 11/23/2022]
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Balan A, Santacruz CP, Moutran A, Ferreira RCC, Medrano FJ, Pérez CA, Ramos CHI, Ferreira LCS. The molybdate-binding protein (ModA) of the plant pathogen Xanthomonas axonopodis pv. citri. Protein Expr Purif 2006; 50:215-22. [PMID: 16879982 DOI: 10.1016/j.pep.2006.06.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Revised: 06/13/2006] [Accepted: 06/17/2006] [Indexed: 10/24/2022]
Abstract
The modABC operon of phytopathogen Xanthomonas axonopodis pv. citri (X. citri) encodes a putative ABC transporter involved in the uptake of the molybdate and tungstate anions. Sequence analyses showed high similarity values of ModA orthologs found in X. campestris pv. campestris (X. campestris) and Escherichia coli. The X. citri modA gene was cloned in pET28a and the recombinant protein, expressed in the E. coli BL21 (DE3) strain, purified by immobilized metal affinity chromatography. The purified protein remained soluble and specifically bound molybdate and tungstate with K(d) 0.29+/-0.12 microM and 0.58+/-0.14 microM, respectively. Additionally binding of molybdate drastically enhanced the thermal stability of the recombinant ModA as compared to the apoprotein. This is the first characterization of a ModA ortholog expressed by a phytopathogen and represents an important tool for functional, biochemical and structural analyses of molybdate transport in Xanthomonas species.
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Affiliation(s)
- Andrea Balan
- Department of Microbiology, Biomedical Sciences Institute, University of São Paulo, São Paulo, SP 05008-900, Brazil.
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Santacruz CP, Balan A, Ferreira LCS, Barbosa JARG. Crystallization, data collection and phasing of the molybdate-binding protein of the phytopathogen Xanthomonas axonopodis pv. citri. Acta Crystallogr Sect F Struct Biol Cryst Commun 2006; 62:289-91. [PMID: 16511325 PMCID: PMC2197186 DOI: 10.1107/s1744309106003812] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2005] [Accepted: 01/31/2006] [Indexed: 11/10/2022]
Abstract
Xanthomonas axonopodis pv. citri ModA protein is the ABC periplasmic binding component responsible for the capture of molybdate. The protein was crystallized with sodium molybdate using the hanging-drop vapour-diffusion method in the presence of PEG or sulfate. X-ray diffraction data were collected to a maximum resolution of 1.7 A using synchrotron radiation. The crystal belongs to the orthorhombic space group C222(1), with unit-cell parameters a = 68.15, b = 172.14, c = 112.04 A. The crystal structure was solved by molecular-replacement methods and structure refinement is in progress.
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Affiliation(s)
- C. P. Santacruz
- Departamento de Microbiologia, Instituto de Ciências Biomédicas II, Universidade de São Paulo, São Paulo, SP, Brazil
| | - A. Balan
- Departamento de Microbiologia, Instituto de Ciências Biomédicas II, Universidade de São Paulo, São Paulo, SP, Brazil
| | - L. C. S. Ferreira
- Departamento de Microbiologia, Instituto de Ciências Biomédicas II, Universidade de São Paulo, São Paulo, SP, Brazil
| | - J. A. R. G. Barbosa
- Centro de Biologia Molecular e Estrutural (CeBiMe), Laboratório Nacional de Luz Síncrotron (LNLS), CP 6192, Campinas, SP 13084-971, Brazil
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