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http://hdl.handle.net/10261/110114
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dc.contributor.author | Verdaguer, Núria | - |
dc.contributor.author | Corbalán-García, Senena | - |
dc.contributor.author | Ochoa, Wendy F. | - |
dc.contributor.author | Fita, Ignacio | - |
dc.contributor.author | Gómez-Fernández, Juan C. | - |
dc.date.accessioned | 2015-02-03T10:46:24Z | - |
dc.date.available | 2015-02-03T10:46:24Z | - |
dc.date.issued | 1999-11-15 | - |
dc.identifier | doi: 10.1093/emboj/18.22.6329 | - |
dc.identifier | issn: 0261-4189 | - |
dc.identifier.citation | EMBO Journal 18(22): 6329-6338 (1999) | - |
dc.identifier.uri | http://hdl.handle.net/10261/110114 | - |
dc.description.abstract | The C2 domain acts as a membrane-targeting module in a diverse group of proteins including classical protein kinase Cs (PKCs), where it plays an essential role in activation via calcium-dependent interactions with phosphatidylserine. The three-dimensional structures of the Ca2+-bound forms of the PKCα-C2 domain both in the absence and presence of 1,2-dicaproyl-sn-phosphatidyl-L-serine have now been determined by X-ray crystallography at 2.4 and 2.6 Å resolution, respectively. In the structure of the C2 ternary complex, the glycerophosphoserine moiety of the phospholipid adopts a quasi-cyclic conformation, with the phosphoryl group directly coordinated to one of the Ca2+ ions. Specific recognition of the phosphatidylserine is reinforced by additional hydrogen bonds and hydrophobic interactions with protein residues in the vicinity of the Ca2+ binding region. The central feature of the PKCα-C2 domain structure is an eight-stranded, anti-parallel β-barrel with a molecular topology and organization of the Ca2+ binding region closely related to that found in PKCβ-C2, although only two Ca2+ ions have been located bound to the PKCα-C2 domain. The structural information provided by these results suggests a membrane binding mechanism of the PKCα-C2 domain in which calcium ions directly mediate the phosphatidylserine recognition while the calcium binding region 3 might penetrate into the phospholipid bilayer. | - |
dc.description.sponsorship | Research at the IBMB-CSIC was supported by grant PB95-0218 from DGES (Spain). Work at the Universidad de Murcia was supported by grants PB95-1022 and PB96-1107 from DGES (Spain). W.F.O. is a recipient of a fellowship from the MEC | - |
dc.publisher | Nature Publishing Group | - |
dc.rights | closedAccess | - |
dc.subject | C2 domains | - |
dc.subject | X-ray structure | - |
dc.subject | Phosphatidylserine | - |
dc.subject | Protein kinase C | - |
dc.subject | Ca2+ binding | - |
dc.title | Ca2+ bridges the C2 membrane-binding domain of protein kinase Cα directly to phosphatidylserine | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1093/emboj/18.22.6329 | - |
dc.relation.publisherversion | http://dx.doi.org/10.1093/emboj/18.22.6329 | - |
dc.date.updated | 2015-02-03T10:46:24Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.identifier.pmid | 10562545 | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.fulltext | No Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.openairetype | artículo | - |
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