Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants
- Autores
- Noguera, Martín Ezequiel; Vazquez, Diego Sebastian; Ferrer Sueta, Gerardo; Agudelo Suarez, William Armando; Howard, Eduardo Ignacio; Rasia, Rodolfo Maximiliano; Manta, Bruno; Cousido Siah, Alexandra; Mitschler, André; Podjarny, Alberto Daniel; Santos, Javier
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Thioredoxin is a ubiquitous small protein that catalyzes redox reactions of protein thiols. Additionally, thioredoxin from E. coli (EcTRX) is a widely-used model for structure-function studies. In a previous paper, we characterized several single-point mutants of the C-terminal helix (CTH) that alter global stability of EcTRX. However, spectroscopic signatures and enzymatic activity for some of these mutants were found essentially unaffected. A comprehensive structural characterization at the atomic level of these near-invariant mutants can provide detailed information about structural variability of EcTRX. We address this point through the determination of the crystal structures of four point-mutants, whose mutations occurs within or near the CTH, namely L94A, E101G, N106A and L107A. These structures are mostly unaffected compared with the wild-type variant. Notably, the E101G mutant presents a large region with two alternative traces for the backbone of the same chain. It represents a significant shift in backbone positions. Enzymatic activity measurements and conformational dynamics studies monitored by NMR and molecular dynamic simulations show that E101G mutation results in a small effect in the structural features of the protein. We hypothesize that these alternative conformations represent samples of the native-state ensemble of EcTRX, specifically the magnitude and location of conformational heterogeneity.
Fil: Noguera, Martín Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina
Fil: Vazquez, Diego Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina
Fil: Ferrer Sueta, Gerardo. Universidad de la República; Uruguay
Fil: Agudelo Suarez, William Armando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina
Fil: Howard, Eduardo Ignacio. Université de Strasbourg; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rasia, Rodolfo Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Manta, Bruno. Universidad de la República; Uruguay
Fil: Cousido Siah, Alexandra. Université de Strasbourg; Francia
Fil: Mitschler, André. Université de Strasbourg; Francia
Fil: Podjarny, Alberto Daniel. Université de Strasbourg; Francia
Fil: Santos, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina - Materia
-
THIOREDOXIN
X-RAY CRYSTALLOGRAPHY
NATIVE-STATE ENSEMBLE
CONFORMATIONAL HETEROGENEITY - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/47202
Ver los metadatos del registro completo
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Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutantsNoguera, Martín EzequielVazquez, Diego SebastianFerrer Sueta, GerardoAgudelo Suarez, William ArmandoHoward, Eduardo IgnacioRasia, Rodolfo MaximilianoManta, BrunoCousido Siah, AlexandraMitschler, AndréPodjarny, Alberto DanielSantos, JavierTHIOREDOXINX-RAY CRYSTALLOGRAPHYNATIVE-STATE ENSEMBLECONFORMATIONAL HETEROGENEITYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Thioredoxin is a ubiquitous small protein that catalyzes redox reactions of protein thiols. Additionally, thioredoxin from E. coli (EcTRX) is a widely-used model for structure-function studies. In a previous paper, we characterized several single-point mutants of the C-terminal helix (CTH) that alter global stability of EcTRX. However, spectroscopic signatures and enzymatic activity for some of these mutants were found essentially unaffected. A comprehensive structural characterization at the atomic level of these near-invariant mutants can provide detailed information about structural variability of EcTRX. We address this point through the determination of the crystal structures of four point-mutants, whose mutations occurs within or near the CTH, namely L94A, E101G, N106A and L107A. These structures are mostly unaffected compared with the wild-type variant. Notably, the E101G mutant presents a large region with two alternative traces for the backbone of the same chain. It represents a significant shift in backbone positions. Enzymatic activity measurements and conformational dynamics studies monitored by NMR and molecular dynamic simulations show that E101G mutation results in a small effect in the structural features of the protein. We hypothesize that these alternative conformations represent samples of the native-state ensemble of EcTRX, specifically the magnitude and location of conformational heterogeneity.Fil: Noguera, Martín Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; ArgentinaFil: Vazquez, Diego Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; ArgentinaFil: Ferrer Sueta, Gerardo. Universidad de la República; UruguayFil: Agudelo Suarez, William Armando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; ArgentinaFil: Howard, Eduardo Ignacio. Université de Strasbourg; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rasia, Rodolfo Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Manta, Bruno. Universidad de la República; UruguayFil: Cousido Siah, Alexandra. Université de Strasbourg; FranciaFil: Mitschler, André. Université de Strasbourg; FranciaFil: Podjarny, Alberto Daniel. Université de Strasbourg; FranciaFil: Santos, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; ArgentinaNature Publishing Group2017-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/47202Noguera, Martín Ezequiel; Vazquez, Diego Sebastian; Ferrer Sueta, Gerardo; Agudelo Suarez, William Armando; Howard, Eduardo Ignacio; et al.; Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants; Nature Publishing Group; Scientific Reports; 7; 2-2017; 1-12; 423432045-2322CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1038/srep42343info:eu-repo/semantics/altIdentifier/url/https://www.nature.com/articles/srep42343info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:40:36Zoai:ri.conicet.gov.ar:11336/47202instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:40:36.639CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants |
| title |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants |
| spellingShingle |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants Noguera, Martín Ezequiel THIOREDOXIN X-RAY CRYSTALLOGRAPHY NATIVE-STATE ENSEMBLE CONFORMATIONAL HETEROGENEITY |
| title_short |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants |
| title_full |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants |
| title_fullStr |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants |
| title_full_unstemmed |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants |
| title_sort |
Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants |
| dc.creator.none.fl_str_mv |
Noguera, Martín Ezequiel Vazquez, Diego Sebastian Ferrer Sueta, Gerardo Agudelo Suarez, William Armando Howard, Eduardo Ignacio Rasia, Rodolfo Maximiliano Manta, Bruno Cousido Siah, Alexandra Mitschler, André Podjarny, Alberto Daniel Santos, Javier |
| author |
Noguera, Martín Ezequiel |
| author_facet |
Noguera, Martín Ezequiel Vazquez, Diego Sebastian Ferrer Sueta, Gerardo Agudelo Suarez, William Armando Howard, Eduardo Ignacio Rasia, Rodolfo Maximiliano Manta, Bruno Cousido Siah, Alexandra Mitschler, André Podjarny, Alberto Daniel Santos, Javier |
| author_role |
author |
| author2 |
Vazquez, Diego Sebastian Ferrer Sueta, Gerardo Agudelo Suarez, William Armando Howard, Eduardo Ignacio Rasia, Rodolfo Maximiliano Manta, Bruno Cousido Siah, Alexandra Mitschler, André Podjarny, Alberto Daniel Santos, Javier |
| author2_role |
author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
THIOREDOXIN X-RAY CRYSTALLOGRAPHY NATIVE-STATE ENSEMBLE CONFORMATIONAL HETEROGENEITY |
| topic |
THIOREDOXIN X-RAY CRYSTALLOGRAPHY NATIVE-STATE ENSEMBLE CONFORMATIONAL HETEROGENEITY |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Thioredoxin is a ubiquitous small protein that catalyzes redox reactions of protein thiols. Additionally, thioredoxin from E. coli (EcTRX) is a widely-used model for structure-function studies. In a previous paper, we characterized several single-point mutants of the C-terminal helix (CTH) that alter global stability of EcTRX. However, spectroscopic signatures and enzymatic activity for some of these mutants were found essentially unaffected. A comprehensive structural characterization at the atomic level of these near-invariant mutants can provide detailed information about structural variability of EcTRX. We address this point through the determination of the crystal structures of four point-mutants, whose mutations occurs within or near the CTH, namely L94A, E101G, N106A and L107A. These structures are mostly unaffected compared with the wild-type variant. Notably, the E101G mutant presents a large region with two alternative traces for the backbone of the same chain. It represents a significant shift in backbone positions. Enzymatic activity measurements and conformational dynamics studies monitored by NMR and molecular dynamic simulations show that E101G mutation results in a small effect in the structural features of the protein. We hypothesize that these alternative conformations represent samples of the native-state ensemble of EcTRX, specifically the magnitude and location of conformational heterogeneity. Fil: Noguera, Martín Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Vazquez, Diego Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Ferrer Sueta, Gerardo. Universidad de la República; Uruguay Fil: Agudelo Suarez, William Armando. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina Fil: Howard, Eduardo Ignacio. Université de Strasbourg; Francia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Rasia, Rodolfo Maximiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Manta, Bruno. Universidad de la República; Uruguay Fil: Cousido Siah, Alexandra. Université de Strasbourg; Francia Fil: Mitschler, André. Université de Strasbourg; Francia Fil: Podjarny, Alberto Daniel. Université de Strasbourg; Francia Fil: Santos, Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Físico-Química Biológicas "Prof. Alejandro C. Paladini". Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Físico-Química Biológicas; Argentina |
| description |
Thioredoxin is a ubiquitous small protein that catalyzes redox reactions of protein thiols. Additionally, thioredoxin from E. coli (EcTRX) is a widely-used model for structure-function studies. In a previous paper, we characterized several single-point mutants of the C-terminal helix (CTH) that alter global stability of EcTRX. However, spectroscopic signatures and enzymatic activity for some of these mutants were found essentially unaffected. A comprehensive structural characterization at the atomic level of these near-invariant mutants can provide detailed information about structural variability of EcTRX. We address this point through the determination of the crystal structures of four point-mutants, whose mutations occurs within or near the CTH, namely L94A, E101G, N106A and L107A. These structures are mostly unaffected compared with the wild-type variant. Notably, the E101G mutant presents a large region with two alternative traces for the backbone of the same chain. It represents a significant shift in backbone positions. Enzymatic activity measurements and conformational dynamics studies monitored by NMR and molecular dynamic simulations show that E101G mutation results in a small effect in the structural features of the protein. We hypothesize that these alternative conformations represent samples of the native-state ensemble of EcTRX, specifically the magnitude and location of conformational heterogeneity. |
| publishDate |
2017 |
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2017-02 |
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article |
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http://hdl.handle.net/11336/47202 Noguera, Martín Ezequiel; Vazquez, Diego Sebastian; Ferrer Sueta, Gerardo; Agudelo Suarez, William Armando; Howard, Eduardo Ignacio; et al.; Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants; Nature Publishing Group; Scientific Reports; 7; 2-2017; 1-12; 42343 2045-2322 CONICET Digital CONICET |
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http://hdl.handle.net/11336/47202 |
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Noguera, Martín Ezequiel; Vazquez, Diego Sebastian; Ferrer Sueta, Gerardo; Agudelo Suarez, William Armando; Howard, Eduardo Ignacio; et al.; Structural variability of E. coli thioredoxin captured in the crystal structures of single-point mutants; Nature Publishing Group; Scientific Reports; 7; 2-2017; 1-12; 42343 2045-2322 CONICET Digital CONICET |
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Nature Publishing Group |
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