| Metadato | Etiqueta | Valor | Idioma |
|---|---|---|---|
| dc.contributor.author | Autor | Margenat, Mariana | - |
| dc.contributor.author | Autor | Betancour Curutchet, Gabriela | - |
| dc.contributor.author | Autor | Irving, Vivian | - |
| dc.contributor.author | Autor | Costábile Cristech, Alicia | - |
| dc.contributor.author | Autor | García Cedrés, Tania | - |
| dc.contributor.author | Autor | Portela, María Magdalena | - |
| dc.contributor.author | Autor | Carrión Runco, Federico Daniel | - |
| dc.contributor.author | Autor | Herrera, Fernando E. | - |
| dc.contributor.author | Autor | Villarino, Andrea | - |
| dc.contributor.filiacion | Filiación | Margenat Mariana, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. | - |
| dc.contributor.filiacion | Filiación | Betancour Curutchet Gabriela, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. | - |
| dc.contributor.filiacion | Filiación | Irving Vivian, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. | - |
| dc.contributor.filiacion | Filiación | Costábile Cristech Alicia, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. | - |
| dc.contributor.filiacion | Filiación | García Cedrés Tania, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. | - |
| dc.contributor.filiacion | Filiación | Portela María Magdalena, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. | - |
| dc.contributor.filiacion | Filiación | Carrión Runco Federico Daniel, Instituto Pasteur (Montevideo). | - |
| dc.contributor.filiacion | Filiación | Herrera Fernando E., Universidad Nacional del Litoral | - |
| dc.contributor.filiacion | Filiación | Villarino Andrea, Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Biología. | - |
| dc.date.accessioned | Fecha ingreso | 2024-03-14T15:10:18Z | - |
| dc.date.available | Fecha disponible | 2024-03-14T15:10:18Z | - |
| dc.date.issued | Año de publicación | 2023 | - |
| dc.description.abstract | Resumen | During Mycobacterium tuberculosis (Mtb) infection, the virulence factor PtpA belonging to the protein tyrosine phosphatase family is delivered into the cytosol of the macrophage. PtpA interacts with numerous eukaryotic proteins modulating phagosome maturation, innate immune response, apoptosis, and potentially host-lipid metabolism, as previously reported by our group. In vitro, the human trifunctional protein enzyme (hTFP) is a bona fide PtpA substrate, a key enzyme of mitochondrial b-oxidation of long-chain fatty acids, containing two alpha and two beta subunits arranged in a tetramer structure. Interestingly, it has been described that the alpha subunit of hTFP (ECHA, hTFPa) is no longer detected in mitochondria during macrophage infection with the virulent Mtb H37Rv. To better understand if PtpA could be the bacterial factor responsible for this effect, in the present work, we studied in-depth the PtpA activity and interaction with hTFPa. With this aim, we performed docking and in vitro dephosphorylation assays defining the P-Tyr-271 as the potential target of mycobacterial PtpA, a residue located in the helix-10 of hTFPa, previously described as relevant for its mitochondrial membrane localization and activity. Phylogenetic analysis showed that Tyr-271 is absent in TFPa of bacteria and is present in more complex eukaryotic organisms. These results suggest that this residue is a specific PtpA target, and its phosphorylation state is a way of regulating its subcellular localization. We also showed that phosphorylation of Tyr-271 can be catalyzed by Jak kinase. In addition, we found by molecular dynamics that PtpA and hTFPa form a stable protein complex through the PtpA active site, and we determined the dissociation equilibrium constant. Finally, a detailed study of PtpA interaction with ubiquitin, a reported PtpA activator, showed that additional factors are required to explain a ubiquitin-mediated activation of PtpA. Altogether, our results provide further evidence supporting that PtpA could be the bacterial factor that dephosphorylates hTFPa during infection, potentially affecting its mitochondrial localization or boxidation activity. | es |
| dc.description.sponsorship | Financiadores | ANII: FCE_1_2017_1_136458 | es |
| dc.description.sponsorship | Financiadores | ANII: FCE_1_2021_1_166706 | es |
| dc.format.extent | Extensión | 16 h. | es |
| dc.format.mimetype | Formato | application/pdf | es |
| dc.identifier.citation | Citación | Margenat, M, Betancour Curutchet, G, Irving, V [y otros autores]. "Characteristics of Mycobacterium tuberculosis PtpA interaction and activity on the alpha subunit of human mitochondrial trifunctional protein, a key enzyme of lipid metabolism". Frontiers in Cellular and Infection Microbiology. [en línea] 2023, 13: 1095060. 16 h. DOI: 10.3389/fcimb.2023.1095060. | es |
| dc.identifier.doi | DOI | 10.3389/fcimb.2023.1095060 | - |
| dc.identifier.issn | ISSN | 2235-2988 | - |
| dc.identifier.uri | URI | https://hdl.handle.net/20.500.12008/43100 | - |
| dc.language.iso | Idioma | en | es |
| dc.publisher | Editorial | Frontiers | es |
| dc.relation.ispartof | EN | Frontiers in Cellular and Infection Microbiology, 2023, 13: 1095060. | es |
| dc.rights | Derechos | Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad de la República.(Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014) | es |
| dc.rights.licence | Licencia | Licencia Creative Commons Atribución (CC - By 4.0) | es |
| dc.subject | Palabras clave | Mycobacterium tuberculosis | es |
| dc.subject | Palabras clave | Tyrosine phosphatase | es |
| dc.subject | Palabras clave | PtpA | es |
| dc.subject | Palabras clave | Human mitochondrial trifunctional protein | es |
| dc.subject | Palabras clave | TFP | es |
| dc.subject | Palabras clave | ECHA | es |
| dc.subject | Palabras clave | Lipid metabolism | es |
| dc.subject | Palabras clave | Jak | es |
| dc.title | Título | Characteristics of Mycobacterium tuberculosis PtpA interaction and activity on the alpha subunit of human mitochondrial trifunctional protein, a key enzyme of lipid metabolism | es |
| dc.type | Tipo de documento | Artículo | es |
Colecciones:
| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| 10.3389.fcimb.2023.1095060.pdf | — | 6.49 MB | Adobe PDF |