Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/ijms23179857 http://hdl.handle.net/11449/237897 |
Resumo: | Staphylococcal exfoliative toxins (ETs) are glutamyl endopeptidases that specifically cleave the Glu381-Gly382 bond in the ectodomains of desmoglein 1 (Dsg1) via complex action mechanisms. To date, four ETs have been identified in different Staphylococcus aureus strains and ETE is the most recently characterized. The unusual properties of ETs have been attributed to a unique structural feature, i.e., the 180 degrees flip of the carbonyl oxygen (O) of the nonconserved residue 192/186 (ETA/ETE numbering), not conducive to the oxyanion hole formation. We report the crystal structure of ETE determined at 1.61 angstrom resolution, in which P186(O) adopts two conformations displaying a 180 degrees rotation. This finding, together with free energy calculations, supports the existence of a dynamic transition between the conformations under the tested conditions. Moreover, enzymatic assays showed no significant differences in the esterolytic efficiency of ETE and ETE/P186G, a mutant predicted to possess a functional oxyanion hole, thus downplaying the influence of the flip on the activity. Finally, we observed the formation of ETE homodimers in solution and the predicted homodimeric structure revealed the participation of a characteristic nonconserved loop in the interface and the partial occlusion of the protein active site, suggesting that monomerization is required for enzymatic activity. |
id |
UNSP_7a7f0a6be37c65419e0ee5f98538d6de |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/237897 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action MechanismStaphylococcal exfoliative toxin EProline flipHomodimerizationX-ray diffractionMolecular dynamicsStaphylococcal exfoliative toxins (ETs) are glutamyl endopeptidases that specifically cleave the Glu381-Gly382 bond in the ectodomains of desmoglein 1 (Dsg1) via complex action mechanisms. To date, four ETs have been identified in different Staphylococcus aureus strains and ETE is the most recently characterized. The unusual properties of ETs have been attributed to a unique structural feature, i.e., the 180 degrees flip of the carbonyl oxygen (O) of the nonconserved residue 192/186 (ETA/ETE numbering), not conducive to the oxyanion hole formation. We report the crystal structure of ETE determined at 1.61 angstrom resolution, in which P186(O) adopts two conformations displaying a 180 degrees rotation. This finding, together with free energy calculations, supports the existence of a dynamic transition between the conformations under the tested conditions. Moreover, enzymatic assays showed no significant differences in the esterolytic efficiency of ETE and ETE/P186G, a mutant predicted to possess a functional oxyanion hole, thus downplaying the influence of the flip on the activity. Finally, we observed the formation of ETE homodimers in solution and the predicted homodimeric structure revealed the participation of a characteristic nonconserved loop in the interface and the partial occlusion of the protein active site, suggesting that monomerization is required for enzymatic activity.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)IBILCE UNESP, Multiuser Ctr Biomol Innovat, BR-15054000 Sao Jose Do Rio Preto, BrazilBrazilian Ctr Res Energy & Mat CNPEM, Brazilian Synchrotron Light Lab LNLS, BR-13083970 Campinas, SP, BrazilUniv Estadual Campinas, Inst Chem, BR-13083970 Campinas, BrazilUniv Sao Paulo, Inst Fis, BR-05314970 Sao Paulo, BrazilSao Paulo State Univ, Lab Genom Studies, UNESP, BR-15054000 Sao Jose Do Rio Preto, BrazilUniv Fed Rio de Janeiro, Inst Biofis Carlos Chagas Filho, Lab Modelagem & Dinam Mol, BR-21941901 Rio De Janeiro, BrazilIBILCE UNESP, Multiuser Ctr Biomol Innovat, BR-15054000 Sao Jose Do Rio Preto, BrazilSao Paulo State Univ, Lab Genom Studies, UNESP, BR-15054000 Sao Jose Do Rio Preto, BrazilFAPESP: 2020/13921-0FAPESP: 2020/10214-1FAPESP: 2018/07977-3FAPESP: 2020/08615-8CNPq: 309940/2019-2MdpiUniversidade Estadual Paulista (UNESP)Brazilian Ctr Res Energy & Mat CNPEMUniversidade Estadual de Campinas (UNICAMP)Universidade de São Paulo (USP)Universidade Federal do Rio de Janeiro (UFRJ)Gismene, Carolina [UNESP]Gonzalez, Jorge Enrique Hernandez [UNESP]Santisteban, Angela Rocio Nino [UNESP]Nascimento, Andrey Fabricio ZiemCunha, Lucas dos SantosMoraes, Fabio Rogerio de [UNESP]Oliveira, Cristiano Luis Pinto deOliveira, Caio C.Provazzi, Paola Jocelan Scarin[UNESP]Pascutti, Pedro GeraldoArni, Raghuvir Krishnaswamy [UNESP]Mariutti, Ricardo Barros [UNESP]2022-11-30T13:47:54Z2022-11-30T13:47:54Z2022-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article20http://dx.doi.org/10.3390/ijms23179857International Journal Of Molecular Sciences. Basel: Mdpi, v. 23, n. 17, 20 p., 2022.1422-0067http://hdl.handle.net/11449/23789710.3390/ijms23179857WOS:000851108300001Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal Of Molecular Sciencesinfo:eu-repo/semantics/openAccess2022-11-30T13:47:54Zoai:repositorio.unesp.br:11449/237897Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-11-30T13:47:54Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism |
title |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism |
spellingShingle |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism Gismene, Carolina [UNESP] Staphylococcal exfoliative toxin E Proline flip Homodimerization X-ray diffraction Molecular dynamics |
title_short |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism |
title_full |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism |
title_fullStr |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism |
title_full_unstemmed |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism |
title_sort |
Staphylococcus aureus Exfoliative Toxin E, Oligomeric State and Flip of P186: Implications for Its Action Mechanism |
author |
Gismene, Carolina [UNESP] |
author_facet |
Gismene, Carolina [UNESP] Gonzalez, Jorge Enrique Hernandez [UNESP] Santisteban, Angela Rocio Nino [UNESP] Nascimento, Andrey Fabricio Ziem Cunha, Lucas dos Santos Moraes, Fabio Rogerio de [UNESP] Oliveira, Cristiano Luis Pinto de Oliveira, Caio C. Provazzi, Paola Jocelan Scarin[UNESP] Pascutti, Pedro Geraldo Arni, Raghuvir Krishnaswamy [UNESP] Mariutti, Ricardo Barros [UNESP] |
author_role |
author |
author2 |
Gonzalez, Jorge Enrique Hernandez [UNESP] Santisteban, Angela Rocio Nino [UNESP] Nascimento, Andrey Fabricio Ziem Cunha, Lucas dos Santos Moraes, Fabio Rogerio de [UNESP] Oliveira, Cristiano Luis Pinto de Oliveira, Caio C. Provazzi, Paola Jocelan Scarin[UNESP] Pascutti, Pedro Geraldo Arni, Raghuvir Krishnaswamy [UNESP] Mariutti, Ricardo Barros [UNESP] |
author2_role |
author author author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Brazilian Ctr Res Energy & Mat CNPEM Universidade Estadual de Campinas (UNICAMP) Universidade de São Paulo (USP) Universidade Federal do Rio de Janeiro (UFRJ) |
dc.contributor.author.fl_str_mv |
Gismene, Carolina [UNESP] Gonzalez, Jorge Enrique Hernandez [UNESP] Santisteban, Angela Rocio Nino [UNESP] Nascimento, Andrey Fabricio Ziem Cunha, Lucas dos Santos Moraes, Fabio Rogerio de [UNESP] Oliveira, Cristiano Luis Pinto de Oliveira, Caio C. Provazzi, Paola Jocelan Scarin[UNESP] Pascutti, Pedro Geraldo Arni, Raghuvir Krishnaswamy [UNESP] Mariutti, Ricardo Barros [UNESP] |
dc.subject.por.fl_str_mv |
Staphylococcal exfoliative toxin E Proline flip Homodimerization X-ray diffraction Molecular dynamics |
topic |
Staphylococcal exfoliative toxin E Proline flip Homodimerization X-ray diffraction Molecular dynamics |
description |
Staphylococcal exfoliative toxins (ETs) are glutamyl endopeptidases that specifically cleave the Glu381-Gly382 bond in the ectodomains of desmoglein 1 (Dsg1) via complex action mechanisms. To date, four ETs have been identified in different Staphylococcus aureus strains and ETE is the most recently characterized. The unusual properties of ETs have been attributed to a unique structural feature, i.e., the 180 degrees flip of the carbonyl oxygen (O) of the nonconserved residue 192/186 (ETA/ETE numbering), not conducive to the oxyanion hole formation. We report the crystal structure of ETE determined at 1.61 angstrom resolution, in which P186(O) adopts two conformations displaying a 180 degrees rotation. This finding, together with free energy calculations, supports the existence of a dynamic transition between the conformations under the tested conditions. Moreover, enzymatic assays showed no significant differences in the esterolytic efficiency of ETE and ETE/P186G, a mutant predicted to possess a functional oxyanion hole, thus downplaying the influence of the flip on the activity. Finally, we observed the formation of ETE homodimers in solution and the predicted homodimeric structure revealed the participation of a characteristic nonconserved loop in the interface and the partial occlusion of the protein active site, suggesting that monomerization is required for enzymatic activity. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-11-30T13:47:54Z 2022-11-30T13:47:54Z 2022-09-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3390/ijms23179857 International Journal Of Molecular Sciences. Basel: Mdpi, v. 23, n. 17, 20 p., 2022. 1422-0067 http://hdl.handle.net/11449/237897 10.3390/ijms23179857 WOS:000851108300001 |
url |
http://dx.doi.org/10.3390/ijms23179857 http://hdl.handle.net/11449/237897 |
identifier_str_mv |
International Journal Of Molecular Sciences. Basel: Mdpi, v. 23, n. 17, 20 p., 2022. 1422-0067 10.3390/ijms23179857 WOS:000851108300001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal Of Molecular Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
20 |
dc.publisher.none.fl_str_mv |
Mdpi |
publisher.none.fl_str_mv |
Mdpi |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1797790290818367488 |