Engineering a bifunctional copper site in the cupredoxin fold by loop-directed mutagenesis
dc.citation.title | Chemical Science | |
dc.citation.volume | 9 | |
dc.contributor.orcid | https://orcid.org/0000-0003-0500-4513 | |
dc.contributor.orcid | https://orcid.org/0000-0003-0248-6916 | |
dc.contributor.orcid | https://orcid.org/0000-0002-1507-9685 | |
dc.contributor.orcid | https://orcid.org/0000-0002-8777-0870 | |
dc.contributor.orcid | https://orcid.org/0000-0002-5448-5483 | |
dc.contributor.orcid | https://orcid.org/0000-0001-5173-0183 | |
dc.contributor.orcid | https://orcid.org/0000-0002-7978-3233 | |
dc.creator | Espinoza Cara, Andrés | |
dc.creator | Zitare, Ulises A. | |
dc.creator | Alvarez Paggi , Damián | |
dc.creator | Klinke, Sebastián | |
dc.creator | Otero, Lisandro H. | |
dc.creator | Murgida, Daniel H. | |
dc.creator | Vila, Alejandro J. | |
dc.date.accessioned | 2024-06-07T13:25:35Z | |
dc.date.available | 2024-06-07T13:25:35Z | |
dc.date.issued | 2018-06-28 | |
dc.description.abstract | Copper sites in proteins are designed to perform either electron transfer or redox catalysis. Type 1 and CuA sites are electron transfer hubs bound to a rigid protein fold that prevents binding of exogenous ligands and side reactions. Here we report the engineering of two Type 1 sites by loop-directed mutagenesis within a CuA scaffold with unique electronic structures and functional features. A copper–thioether axial bond shorter than the copper–thiolate bond is responsible for the electronic structure features, in contrast to all other natural or chimeric sites where the copper thiolate bond is short. These sites display highly unusual features, such as: (1) a high reduction potential despite a strong interaction with the axial ligand, which we attribute to changes in the hydrogen bond network and (2) the ability to bind exogenous ligands such as imidazole and azide. This strategy widens the possibility of using natural protein scaffolds with functional features not present in nature. | |
dc.description.fil | Fil: Espinoza Cara, Andrés. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina. | |
dc.description.fil | Fil: Espinoza Cara, Andrés. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Área Biofísica. Departamento de Química Biológica; Argentina. | |
dc.description.fil | Fil: Zitare, Ulises A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física (INQUIMAE-CONICET); Argentina. | |
dc.description.fil | Fil: Alvarez Paggi, Damián. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física (INQUIMAE-CONICET); Argentina. | |
dc.description.fil | Fil: Alvarez Paggi, Damián. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA-CONICET); Argentina. | |
dc.description.fil | Fil: Klinke, Sebastián. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA-CONICET); Argentina. | |
dc.description.fil | Fil: Klinke, Sebastián. Plataforma Argentina de Biología Estructural y Metabolómica PLABEM; Argentina. | |
dc.description.fil | Fil: Otero, Lisandro H. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA-CONICET); Argentina. | |
dc.description.fil | Fil: Otero, Lisandro H. Plataforma Argentina de Biología Estructural y Metabolómica PLABEM; Argentina. | |
dc.description.fil | Fil: Murgida, Daniel H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física (INQUIMAE-CONICET); Argentina. | |
dc.description.fil | Fil: Vila, Alejandro J. Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET); Argentina. | |
dc.description.fil | Fil: Vila, Alejandro J. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Área Biofísica. Departamento de Química Biológica; Argentina. | |
dc.description.fil | Fil: Vila, Alejandro J. Plataforma Argentina de Biología Estructural y Metabolómica PLABEM; Argentina. | |
dc.description.sponsorship | Agencia Nacional de Promoción Científica y Tecnológica (PICT 2015-0133) | |
dc.format.extent | 6692–6702 | |
dc.identifier.issn | 2041-6539 | |
dc.identifier.uri | https://hdl.handle.net/2133/27245 | |
dc.language.iso | en | |
dc.publisher | Royal Society of Chemistry | |
dc.relation.publisherversion | https://doi.org/10.1039/c8sc01444b | |
dc.relation.publisherversion | https://pubs.rsc.org/en/content/articlelanding/2018/sc/c8sc01444b | |
dc.rights | openAccess | |
dc.rights.holder | The Royal Society of Chemistry | |
dc.rights.holder | Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas | |
dc.rights.text | Attribution-NonCommercial 4.0 International | en |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/4.0/ | |
dc.subject | Cupredoxins | |
dc.subject | Electronic structure | |
dc.subject | Spectroscopy | |
dc.subject | Electrochemistry | |
dc.title | Engineering a bifunctional copper site in the cupredoxin fold by loop-directed mutagenesis | |
dc.type | articulo | |
dc.type.collection | articulo | |
dc.type.version | publishedVersion |
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