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Santos J, Cuellar J, Pallarès I, Byrd EJ, Lends A, Moro F, Abdul-Shukkoor MB, Pujols J, Velasco-Carneros L, Sobott F, Otzen DE, Calabrese AN, Muga A, Pedersen JS, Loquet A, Valpuesta JM, Radford SE, Ventura S. A Targetable N-Terminal Motif Orchestrates α-Synuclein Oligomer-to-Fibril Conversion. J Am Chem Soc 2024; 146:12702-12711. [PMID: 38683963 PMCID: PMC11082882 DOI: 10.1021/jacs.4c02262] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 05/02/2024]
Abstract
Oligomeric species populated during α-synuclein aggregation are considered key drivers of neurodegeneration in Parkinson's disease. However, the development of oligomer-targeting therapeutics is constrained by our limited knowledge of their structure and the molecular determinants driving their conversion to fibrils. Phenol-soluble modulin α3 (PSMα3) is a nanomolar peptide binder of α-synuclein oligomers that inhibits aggregation by blocking oligomer-to-fibril conversion. Here, we investigate the binding of PSMα3 to α-synuclein oligomers to discover the mechanistic basis of this protective activity. We find that PSMα3 selectively targets an α-synuclein N-terminal motif (residues 36-61) that populates a distinct conformation in the mono- and oligomeric states. This α-synuclein region plays a pivotal role in oligomer-to-fibril conversion as its absence renders the central NAC domain insufficient to prompt this structural transition. The hereditary mutation G51D, associated with early onset Parkinson's disease, causes a conformational fluctuation in this region, leading to delayed oligomer-to-fibril conversion and an accumulation of oligomers that are resistant to remodeling by molecular chaperones. Overall, our findings unveil a new targetable region in α-synuclein oligomers, advance our comprehension of oligomer-to-amyloid fibril conversion, and reveal a new facet of α-synuclein pathogenic mutations.
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Affiliation(s)
- Jaime Santos
- Institut
de Biotecnologia i Biomedicina and Departament de Bioquímica
i Biologia Molecular, Universitat Autònoma
de Barcelona, Bellaterra, Barcelona 08193, Spain
| | - Jorge Cuellar
- Department
of Macromolecular Structures, Centro Nacional
de Biotecnología (CNB-CSIC), Madrid 28049, Spain
| | - Irantzu Pallarès
- Institut
de Biotecnologia i Biomedicina and Departament de Bioquímica
i Biologia Molecular, Universitat Autònoma
de Barcelona, Bellaterra, Barcelona 08193, Spain
| | - Emily J. Byrd
- Astbury
Centre for Structural Molecular Biology, School of Molecular and Cellular
Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
| | - Alons Lends
- Univ.
Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB, Pessac 33600, France
| | - Fernando Moro
- Instituto
Biofisika (UPV/EHU, CSIC) y Dpto. de Bioquímica y Biología
Molecular, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Barrio Sarriena S/N, Leioa 48940, Spain
| | | | - Jordi Pujols
- Institut
de Biotecnologia i Biomedicina and Departament de Bioquímica
i Biologia Molecular, Universitat Autònoma
de Barcelona, Bellaterra, Barcelona 08193, Spain
| | - Lorea Velasco-Carneros
- Instituto
Biofisika (UPV/EHU, CSIC) y Dpto. de Bioquímica y Biología
Molecular, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Barrio Sarriena S/N, Leioa 48940, Spain
| | - Frank Sobott
- Astbury
Centre for Structural Molecular Biology, School of Molecular and Cellular
Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
| | - Daniel E. Otzen
- Interdisciplinary
Nanoscience Center (iNANO) and Department of Molecular Biology and
Genetics, Aarhus University, Gustav Wieds Vej 14, Aarhus C 8000, Denmark
| | - Antonio N. Calabrese
- Astbury
Centre for Structural Molecular Biology, School of Molecular and Cellular
Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
| | - Arturo Muga
- Instituto
Biofisika (UPV/EHU, CSIC) y Dpto. de Bioquímica y Biología
Molecular, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Barrio Sarriena S/N, Leioa 48940, Spain
| | - Jan Skov Pedersen
- Interdisciplinary
Nanoscience Center (iNANO) and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, Aarhus C 8000, Denmark
| | - Antoine Loquet
- Univ.
Bordeaux, CNRS, Bordeaux INP, CBMN, UMR 5248, IECB, Pessac 33600, France
| | - Jose María Valpuesta
- Department
of Macromolecular Structures, Centro Nacional
de Biotecnología (CNB-CSIC), Madrid 28049, Spain
| | - Sheena E. Radford
- Astbury
Centre for Structural Molecular Biology, School of Molecular and Cellular
Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
| | - Salvador Ventura
- Institut
de Biotecnologia i Biomedicina and Departament de Bioquímica
i Biologia Molecular, Universitat Autònoma
de Barcelona, Bellaterra, Barcelona 08193, Spain
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Cuellar J, Vallin J, Svanström A, Maestro-López M, Teresa Bueno-Carrasco M, Grant Ludlam W, Willardson BM, Valpuesta JM, Grantham J. The molecular chaperone CCT sequesters gelsolin and protects it from cleavage by caspase-3. J Mol Biol 2021; 434:167399. [PMID: 34896365 DOI: 10.1016/j.jmb.2021.167399] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 06/28/2021] [Revised: 11/19/2021] [Accepted: 12/03/2021] [Indexed: 11/27/2022]
Abstract
The actin filament severing and capping protein gelsolin plays an important role in modulation of actin filament dynamics by influencing the number of actin filament ends. During apoptosis, gelsolin becomes constitutively active due to cleavage by caspase-3. In non-apoptotic cells gelsolin is activated by the binding of Ca2+. This activated form of gelsolin binds to, but is not a folding substrate of the molecular chaperone CCT/TRiC. Here we demonstrate that in vitro, gelsolin is protected from cleavage by caspase-3 in the presence of CCT. Cryoelectron microscopy and single particle 3D reconstruction of the CCT:gelsolin complex reveals that gelsolin is located in the interior of the chaperonin cavity, with a placement distinct from that of the obligate CCT folding substrates actin and tubulin. In cultured mouse melanoma B16F1 cells, gelsolin co-localises with CCT upon stimulation of actin dynamics at peripheral regions during lamellipodia formation. These data indicate that localised sequestration of gelsolin by CCT may provide spatial control of actin filament dynamics.
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Affiliation(s)
- Jorge Cuellar
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, 28049, Spain.
| | - Josefine Vallin
- Department of Chemistry and Molecular Biology, University of Gothenburg, Medicinaregatan 9C, 40530 Gothenburg, Sweden
| | - Andreas Svanström
- Department of Chemistry and Molecular Biology, University of Gothenburg, Medicinaregatan 9C, 40530 Gothenburg, Sweden
| | - Moisés Maestro-López
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, 28049, Spain
| | | | - W Grant Ludlam
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
| | - Barry M Willardson
- Department of Chemistry and Biochemistry, Brigham Young University, Provo, UT 84602, USA
| | - José M Valpuesta
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, 28049, Spain
| | - Julie Grantham
- Department of Chemistry and Molecular Biology, University of Gothenburg, Medicinaregatan 9C, 40530 Gothenburg, Sweden.
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Cuellar J, Hytönen J. 'Seroprevalence of Lyme borreliosis in Finland 50 years ago' – Author’s reply. Clin Microbiol Infect 2020; 26:951. [DOI: 10.1016/j.cmi.2020.02.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 11/25/2022]
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Cuellar J, Dub T, Sane J, Hytönen J. Seroprevalence of Lyme borreliosis in Finland 50 years ago. Clin Microbiol Infect 2020; 26:632-636. [DOI: 10.1016/j.cmi.2019.10.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/01/2019] [Accepted: 10/02/2019] [Indexed: 10/25/2022]
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Willardson BM, Cuellar J, Ludlam G, Tensmeyer NC, Aoba T, Dhavale M, Santiago C, Bueno-Carrasco T, Mann MJ, Plimpton RL, Makaju A, Franklin S. Structural and functional analysis of the role of the chaperonin CCT in mTOR complex assembly. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.04354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Palomo-Díez S, Gomes C, López-Parra A, Baeza-Richer C, Cuscó I, Raffone C, García-Arumí E, Vinueza-Espinosa D, Santos C, Montes N, Rasal R, Escala O, Cuellar J, Subirá E, Casals F, Malgosa A, Tizzano E, Tartera E, Domenech G, Arroyo-Pardo E. Genetic identification of Spanish civil war victims. The state of the art in Catalonia (Northeastern Spain). Forensic Science International: Genetics Supplement Series 2019. [DOI: 10.1016/j.fsigss.2019.10.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
Rasal is a modular multi-domain protein of the GTPase-activating protein 1 (GAP1) family; its four known members, GAP1m, Rasal, GAP1IP4BP and Capri, have a Ras GTPase-activating domain (RasGAP). This domain supports the intrinsically slow GTPase activity of Ras by actively participating in the catalytic reaction. In the case of Rasal, GAP1IP4BP and Capri, their remaining domains are responsible for converting the RasGAP domains into dual Ras- and Rap-GAPs, via an incompletely understood mechanism. Although Rap proteins are small GTPase homologues of Ras, their catalytic residues are distinct, which reinforces the importance of determining the structure of full-length GAP1 family proteins. To date, these proteins have not been crystallized, and their size is not adequate for nuclear magnetic resonance (NMR) or for high-resolution cryo-electron microscopy (cryoEM). Here we present the low resolution structure of full-length Rasal, obtained by negative staining electron microscopy, which allows us to propose a model of its domain topology. These results help to understand the role of the different domains in controlling the dual GAP activity of GAP1 family proteins.
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Affiliation(s)
- Jorge Cuellar
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - José María Valpuesta
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain.,Unidad Asociada de Nanobiotecnología (CNB-CSIC e IMDEA Nanociencia), Madrid, Spain
| | - Alfred Wittinghofer
- Department of Structural Biology, Max-Planck-Institute for Molecular Physiology, Dortmund, Germany
| | - Begoña Sot
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain.,Unidad Asociada de Nanobiotecnología (CNB-CSIC e IMDEA Nanociencia), Madrid, Spain.,IMDEA-Nanociencia, Faraday 9, Campus Universitario de Cantoblanco, 28048 Madrid, Spain
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Ukleja M, Valpuesta JM, Dziembowski A, Cuellar J. Beyond the known functions of the CCR4-NOT complex in gene expression regulatory mechanisms: New structural insights to unravel CCR4-NOT mRNA processing machinery. Bioessays 2016; 38:1048-58. [PMID: 27502453 DOI: 10.1002/bies.201600092] [Citation(s) in RCA: 14] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Large protein assemblies are usually the effectors of major cellular processes. The intricate cell homeostasis network is divided into numerous interconnected pathways, each controlled by a set of protein machines. One of these master regulators is the CCR4-NOT complex, which ultimately controls protein expression levels. This multisubunit complex assembles around a scaffold platform, which enables a wide variety of well-studied functions from mRNA synthesis to transcript decay, as well as other tasks still being identified. Solving the structure of the entire CCR4-NOT complex will help to define the distribution of its functions. The recently published three-dimensional reconstruction of the complex, in combination with the known crystal structures of some of the components, has begun to address this. Methodological improvements in structural biology, especially in cryoelectron microscopy, encourage further structural and protein-protein interaction studies, which will advance our comprehension of the gene expression machinery.
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Affiliation(s)
- Marta Ukleja
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland. .,Faculty of Biology, Department of Genetics and Biotechnology, University of Warsaw, Warsaw, Poland. .,Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain. .,Institute of Structural and Molecular Biology, University College London and Birkbeck, London, UK.
| | - José María Valpuesta
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Andrzej Dziembowski
- Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland.,Faculty of Biology, Department of Genetics and Biotechnology, University of Warsaw, Warsaw, Poland
| | - Jorge Cuellar
- Department of Macromolecular Structures, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain.
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Skjærven L, Cuellar J, Martinez A, Valpuesta JM. Dynamics, flexibility, and allostery in molecular chaperonins. FEBS Lett 2015; 589:2522-32. [PMID: 26140986 DOI: 10.1016/j.febslet.2015.06.019] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Revised: 06/18/2015] [Accepted: 06/23/2015] [Indexed: 12/26/2022]
Abstract
The chaperonins are a family of molecular chaperones present in all three kingdoms of life. They are classified into Group I and Group II. Group I consists of the bacterial variants (GroEL) and the eukaryotic ones from mitochondria and chloroplasts (Hsp60), while Group II consists of the archaeal (thermosomes) and eukaryotic cytosolic variants (CCT or TRiC). Both groups assemble into a dual ring structure, with each ring providing a protective folding chamber for nascent and denatured proteins. Their functional cycle is powered by ATP binding and hydrolysis, which drives a series of structural rearrangements that enable encapsulation and subsequent release of the substrate protein. Chaperonins have elaborate allosteric mechanisms to regulate their functional cycle. Long-range negative cooperativity between the two rings ensures alternation of the folding chambers. Positive intra-ring cooperativity, which facilitates concerted conformational transitions within the protein subunits of one ring, has only been demonstrated for Group I chaperonins. In this review, we describe our present understanding of the underlying mechanisms and the structure-function relationships in these complex protein systems with a particular focus on the structural dynamics, allostery, and associated conformational rearrangements.
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Affiliation(s)
- Lars Skjærven
- Department of Biomedicine, University of Bergen, Bergen, Norway.
| | - Jorge Cuellar
- Department of Macromolecular Structure, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
| | - Aurora Martinez
- Department of Biomedicine, University of Bergen, Bergen, Norway
| | - José María Valpuesta
- Department of Macromolecular Structure, Centro Nacional de Biotecnología (CNB-CSIC), Madrid, Spain
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Urrutia J, Cuellar J, Zamora T. Spondylolysis and spina bifida occulta in pediatric patients: prevalence study using computed tomography as a screening method. Eur Spine J 2014; 25:590-5. [PMID: 25070790 DOI: 10.1007/s00586-014-3480-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Revised: 07/20/2014] [Accepted: 07/21/2014] [Indexed: 12/31/2022]
Abstract
PURPOSE The prevalence of spondylolysis reported from radiograph-based studies has been questioned in recent computed tomography (CT)-based studies in adults; however, no new data are available in pediatric patients. Spina bifida occulta (SBO), which has been associated to spondylolysis, may be increasing its prevalence, according to recent studies in adults in the last decades, but without new data in pediatric patients. We aimed to determine the prevalence of spondylolysis and SBO in pediatric patients using abdomen and pelvis CT as a screening tool. METHODS We studied 228 patients 4-15 years old (107 males), who were evaluated with abdomen and pelvis CT scans for reasons not related to the spine. The entire lumbo-sacral spine was evaluated to detect the presence of spondylolysis and SBO. We compared the prevalence of spondylolysis in patients with and without SBO. A logistic regression analysis was performed to determine the effect of age and sex as independent predictors of spondylolysis and SBO. RESULTS The prevalence of spondylolysis was 3.5 % (1.1-5.9 %); 2/8 patients presented with olisthesis, both with grade I slip. The prevalence of SBO was 41.2 % (34.8-59.2 %) (94 patients). Spondylolysis was not more frequent in patients with SBO than in patients without SBO. Male sex and decreasing age independently predicted the presence of SBO, but not of spondylolysis. CONCLUSION We observed a 3.5 % prevalence of spondylolysis and a 41.2 % prevalence of SBO. SBO was significantly more frequent in males and younger patients.
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Affiliation(s)
- Julio Urrutia
- Department of Orthopedic Surgery, School of Medicine, Pontificia Universidad Catolica de Chile, Marcoleta 352, Santiago, Chile.
| | - Jorge Cuellar
- Department of Orthopedic Surgery, School of Medicine, Pontificia Universidad Catolica de Chile, Marcoleta 352, Santiago, Chile
| | - Tomas Zamora
- Department of Orthopedic Surgery, School of Medicine, Pontificia Universidad Catolica de Chile, Marcoleta 352, Santiago, Chile
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Cuellar J, Yébenes H, Parker SK, Carranza G, Serna M, Valpuesta JM, Zabala JC, Detrich HW. Assisted protein folding at low temperature: evolutionary adaptation of the Antarctic fish chaperonin CCT and its client proteins. Biol Open 2014; 3:261-70. [PMID: 24659247 PMCID: PMC3988795 DOI: 10.1242/bio.20147427] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [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] [Indexed: 11/20/2022] Open
Abstract
Eukaryotic ectotherms of the Southern Ocean face energetic challenges to protein folding assisted by the cytosolic chaperonin CCT. We hypothesize that CCT and its client proteins (CPs) have co-evolved molecular adaptations that facilitate CCT–CP interaction and the ATP-driven folding cycle at low temperature. To test this hypothesis, we compared the functional and structural properties of CCT–CP systems from testis tissues of an Antarctic fish, Gobionotothen gibberifrons (Lönnberg) (habitat/body T = −1.9 to +2°C), and of the cow (body T = 37°C). We examined the temperature dependence of the binding of denatured CPs (β-actin, β-tubulin) by fish and bovine CCTs, both in homologous and heterologous combinations and at temperatures between −4°C and 20°C, in a buffer conducive to binding of the denatured CP to the open conformation of CCT. In homologous combination, the percentage of G. gibberifrons CCT bound to CP declined linearly with increasing temperature, whereas the converse was true for bovine CCT. Binding of CCT to heterologous CPs was low, irrespective of temperature. When reactions were supplemented with ATP, G. gibberifrons CCT catalyzed the folding and release of actin at 2°C. The ATPase activity of apo-CCT from G. gibberifrons at 4°C was ∼2.5-fold greater than that of apo-bovine CCT, whereas equivalent activities were observed at 20°C. Based on these results, we conclude that the catalytic folding cycle of CCT from Antarctic fishes is partially compensated at their habitat temperature, probably by means of enhanced CP-binding affinity and increased flexibility of the CCT subunits.
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Affiliation(s)
- Jorge Cuellar
- Centro Nacional de Biotechnología (CNB-CSIC), Campus de la Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Sahli F, Cuellar J, Pérez A, Fields AJ, Campos M, Ramos-Grez J. Structural parameters determining the strength of the porcine vertebral body affected by tumours. Comput Methods Biomech Biomed Engin 2014; 18:890-9. [DOI: 10.1080/10255842.2013.855728] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Rodrigo R, Toro CA, Cuellar J. Morphological characteristics of poly(styrene-co-divinylbenzene) microparticles synthesized by suspension polymerization. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2012.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Rodrigo R, Toro CA, Cuellar J. Preparation of chloromethylated and aminated gel-type poly(styrene- co-divinylbenzene) microparticles with controlled degree of functionalization. J Appl Polym Sci 2013. [DOI: 10.1002/app.39490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Raúl Rodrigo
- Chemical Engineering Department; University of Salamanca; Plaza de los Caídos 1-5; 37008; Salamanca; Spain
| | - Claudio Andrés Toro
- Chemical Engineering Department; University of Salamanca; Plaza de los Caídos 1-5; 37008; Salamanca; Spain
| | - Jorge Cuellar
- Chemical Engineering Department; University of Salamanca; Plaza de los Caídos 1-5; 37008; Salamanca; Spain
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Trinidad AG, Muller PAJ, Cuellar J, Klejnot M, Nobis M, Valpuesta JM, Vousden KH. Interaction of p53 with the CCT complex promotes protein folding and wild-type p53 activity. Mol Cell 2013; 50:805-17. [PMID: 23747015 PMCID: PMC3699784 DOI: 10.1016/j.molcel.2013.05.002] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Revised: 03/06/2013] [Accepted: 05/01/2013] [Indexed: 12/14/2022]
Abstract
p53 is a transcription factor that mediates tumor suppressor responses. Correct folding of the p53 protein is essential for these activities, and point mutations that induce conformational instability of p53 are frequently found in cancers. These mutant p53s not only lose wild-type activity but can also acquire the ability to promote invasion and metastasis. We show that folding of wild-type p53 is promoted by an interaction with the chaperonin CCT. Depletion of this chaperone in cells results in the accumulation of misfolded p53, leading to a reduction in p53-dependent gene expression. Intriguingly, p53 proteins mutated to prevent the interaction with CCT show conformational instability and acquire an ability to promote invasion and random motility that is similar to the activity of tumor-derived p53 mutants. Our data therefore suggest that both growth suppression and cell invasion may be differentially regulated functions of wild-type p53. p53 is a client protein for CCT Inhibition of CCT binding leads to misfolding of p53 in cells CCT binding can regulate whether p53 shows growth suppressive or invasive behavior CCT binding is a mechanism through which the conformation of p53 can be controlled
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Plimpton R, Cuellar J, Lai CWJ, Taylor R, Carrascosa JL, Prince JT, Valpuesta J, Willardson BM. Structures of the G‐beta–CCT and PhLP1–G‐beta–CCT complexes reveal a molecular mechanism for G protein beta subunit folding and beta‐gamma dimer assembly. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1040.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | - Ryan Taylor
- Chemistry and BiochemistryBrigham Young UniversityProvoUT
| | | | - John T Prince
- Chemistry and BiochemistryBrigham Young UniversityProvoUT
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Rodrigo R, Toro CA, Cuellar J. Influence of the geometric factors of the experimental device used in suspension polymerization on the properties of poly(styrene-co-divinylbenzene) microparticles. J Appl Polym Sci 2011. [DOI: 10.1002/app.35129] [Citation(s) in RCA: 14] [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: 11/11/2022]
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de Arriba ÁLF, Simón L, Alcázar V, Cuellar J, Lozano-Martínez P, Morán JR. A Twitchell Reagent Revival: Biodiesel Generation from Low Cost Oils. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100278] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Santos LO, Alegre RM, Garcia-Diego C, Cuellar J. Effects of magnetic fields on biomass and glutathione production by the yeast Saccharomyces cerevisiae. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.05.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Plimpton R, Lai CWJ, Haines K, Stowell C, Cuellar J, Martin‐Benito J, Valpuesta JM, Willardson BM. Structural analysis of the Gβ1‐CCT complex provides insight into the mechanism of Gβ1 folding. FASEB J 2010. [DOI: 10.1096/fasebj.24.1_supplement.855.5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Rebecca Plimpton
- Department of Chemistry and BiochemistryBrigham Young UniversityProvoUT
| | - Chun Wan J. Lai
- Department of Chemistry and BiochemistryBrigham Young UniversityProvoUT
| | - Kara Haines
- Department of Chemistry and BiochemistryBrigham Young UniversityProvoUT
| | - Caleb Stowell
- Department of Chemistry and BiochemistryBrigham Young UniversityProvoUT
| | - Jorge Cuellar
- Centro Nacional de BiotecnologiaCampus de la Universidad Autonoma de MadridMadridSpain
| | - Jaime Martin‐Benito
- Centro Nacional de BiotecnologiaCampus de la Universidad Autonoma de MadridMadridSpain
| | - Jose M. Valpuesta
- Centro Nacional de BiotecnologiaCampus de la Universidad Autonoma de MadridMadridSpain
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Cuellar J. Tropical Infections in Solid Organ Transplant Recipients. Int J Infect Dis 2010. [DOI: 10.1016/j.ijid.2010.02.2219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Toro CA, Rodrigo R, Cuellar J. Sulfonation of macroporous poly(styrene-co-divinylbenzene) beads: Effect of the proportion of isomers on their cation exchange capacity. REACT FUNCT POLYM 2008. [DOI: 10.1016/j.reactfunctpolym.2008.06.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Schuermann JP, Jiang J, Cuellar J, Llorca O, Wang L, Gimenez LE, Jin S, Taylor AB, Demeler B, Morano KA, Hart PJ, Valpuesta JM, Lafer EM, Sousa R. Structure of the Hsp110:Hsc70 nucleotide exchange machine. Mol Cell 2008; 31:232-43. [PMID: 18550409 DOI: 10.1016/j.molcel.2008.05.006] [Citation(s) in RCA: 165] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2008] [Revised: 03/30/2008] [Accepted: 05/13/2008] [Indexed: 11/28/2022]
Abstract
Hsp70s mediate protein folding, translocation, and macromolecular complex remodeling reactions. Their activities are regulated by proteins that exchange ADP for ATP from the nucleotide-binding domain (NBD) of the Hsp70. These nucleotide exchange factors (NEFs) include the Hsp110s, which are themselves members of the Hsp70 family. We report the structure of an Hsp110:Hsc70 nucleotide exchange complex. The complex is characterized by extensive protein:protein interactions and symmetric bridging interactions between the nucleotides bound in each partner protein's NBD. An electropositive pore allows nucleotides to enter and exit the complex. The role of nucleotides in complex formation and dissociation, and the effects of the protein:protein interactions on nucleotide exchange, can be understood in terms of the coupled effects of the nucleotides and protein:protein interactions on the open-closed isomerization of the NBDs. The symmetrical interactions in the complex may model other Hsp70 family heterodimers in which two Hsp70s reciprocally act as NEFs.
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Affiliation(s)
- Jonathan P Schuermann
- Department of Biochemistry, University of Texas Health Science Center, San Antonio, TX 78229-3900, USA
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Garcia-Diego C, Cuellar J. Design of polymeric microparticles with improved structural properties: Influence of ethylstyrene monomer and of high proportions of crosslinker. Eur Polym J 2008. [DOI: 10.1016/j.eurpolymj.2008.02.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Garcia-Diego C, Cuellar J. Determination of the Quantitative Relationships between the Synthesis Conditions of Macroporous Poly(styrene-co-divinylbenzene) Microparticles and the Characteristics of Their Behavior as Adsorbents Using Bovine Serum Albumin as a Model Macromolecule. Ind Eng Chem Res 2006. [DOI: 10.1021/ie051292l] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cristina Garcia-Diego
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1-5, 37008 Salamanca, Spain
| | - Jorge Cuellar
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1-5, 37008 Salamanca, Spain
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Garcia-Diego C, Cuellar J. Synthesis of Macroporous Poly(styrene-co-divinylbenzene) Microparticles Using n-Heptane as the Porogen: Quantitative Effects of the DVB Concentration and the Monomeric Fraction on Their Structural Characteristics. Ind Eng Chem Res 2005. [DOI: 10.1021/ie050091e] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Cristina Garcia-Diego
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1-5, 37008 Salamanca, Spain
| | - Jorge Cuellar
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1-5, 37008 Salamanca, Spain
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Martin C, Cuellar J. Synthesis of Poly(styrene-co-divinylbenzene)-stainless Steel Beads through a Factorial Design of Experiments. Ind Eng Chem Res 2004. [DOI: 10.1021/ie030448j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cristina Martin
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1-5, 37008 Salamanca, Spain
| | - Jorge Cuellar
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1-5, 37008 Salamanca, Spain
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Affiliation(s)
- Cristina Martin
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1−5, 37008 Salamanca, Spain
| | - Jorge Cuellar
- Department of Chemical Engineering, University of Salamanca, Plaza de los Caidos 1−5, 37008 Salamanca, Spain
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Wood CD, Senoo K, Martin C, Cuellar J, Cooper AI. Polymer Synthesis Using Hydrofluorocarbon Solvents. 1. Synthesis of Cross-Linked Polymers by Dispersion Polymerization in 1,1,1,2-Tetrafluoroethane. Macromolecules 2002. [DOI: 10.1021/ma025506b] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Colin D. Wood
- Donnan and Robert Robinson Laboratories, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 3BX, United Kingdom, and Departamento de Ingenieria Quimica, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - Kazunobu Senoo
- Donnan and Robert Robinson Laboratories, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 3BX, United Kingdom, and Departamento de Ingenieria Quimica, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - Cristina Martin
- Donnan and Robert Robinson Laboratories, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 3BX, United Kingdom, and Departamento de Ingenieria Quimica, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - Jorge Cuellar
- Donnan and Robert Robinson Laboratories, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 3BX, United Kingdom, and Departamento de Ingenieria Quimica, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
| | - Andrew I. Cooper
- Donnan and Robert Robinson Laboratories, Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 3BX, United Kingdom, and Departamento de Ingenieria Quimica, Universidad de Salamanca, Plaza de los Caídos 1-5, 37008 Salamanca, Spain
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Quevedo F, Arámbulo P, Escalante JA, Estupiñán J, Almeida C, Cuellar J. [Risk of transmission of cholera by fish products: regional perspective in South America]. REV SCI TECH OIE 1997; 16:673-83. [PMID: 9580317] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Cholera returned to South America in January 1991, after almost a century of absence. The hygienic status of the countries affected, aggravated by economic and political difficulties, allowed the disease to spread rapidly. In Peru, fishery products were incriminated from the outset, although without conclusive evidence. However, epidemiological and laboratory findings in other countries have confirmed the transmission of the disease by these products. The authors discuss the effects of the recent cholera epidemic on the trade and consumption of fishery products in countries of South America. The actual risk of cholera transmission by food and in particular by the consumption of fishery products is discussed, and a basis for conducting an accurate evaluation of these risks is proposed. Finally, the authors summarise the measures recommended to prevent the transmission of cholera by fishery products.
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Affiliation(s)
- F Quevedo
- Instituto Panamericano de Protección de Alimentos y Zoonosis, Organización Panamericana de la Salud/Organización Mundial de la Salud, Buenos Aires, Argentina
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Cuellar J, Jaraíz EM. Determination of the magnetic susceptibility of solids used in the design of a magnetic valve for solids. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/0300-9467(86)80060-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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