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• W2154841454 abstract "Barrier-to-autointegration factor (BAF) is a conserved 10-kDa chromatin protein essential in proliferating cells. BAF dimers bind double-stranded DNA, histone H3, histone H1.1, lamin A, and transcription regulators, plus emerin and other LEM-domain nuclear proteins. Two-dimensional gel analysis showed that endogenous human and Xenopus BAF are posttranslationally modified by phosphorylation and potentially other modifications and that they are hyperphosphorylated during mitosis. The invariant Ser-4 residue on BAF is a major site of phosphorylation during both interphase and mitosis. In HeLa cells that overexpressed the phosphomimetic BAF missense mutant S4E, but not S4A, emerin mislocalized from the nuclear envelope, suggesting Ser-4-nonphosphorylated BAF normally promotes emerin localization at the nuclear envelope. Supporting this model, wild-type BAF but not mutant S4E enhanced emerin binding to lamin A in vitro. Thus, Ser-4-unphosphorylated BAF has a positive role in localizing emerin; this role may be disease relevant because loss or mislocalization of emerin causes Emery–Dreifuss muscular dystrophy. Our findings further suggest Ser-4 phosphorylation inhibits BAF binding to emerin and lamin A, and thereby weakens emerin–lamin interactions during both mitosis and interphase." @default.
• W2154841454 created "2016-06-24" @default.
• W2154841454 creator A5038535500 @default.
• W2154841454 creator A5068099600 @default.
• W2154841454 date "2006-03-01" @default.
• W2154841454 modified "2023-09-30" @default.
• W2154841454 title "Barrier-to-Autointegration Factor Phosphorylation on Ser-4 Regulates Emerin Binding to Lamin A In Vitro and Emerin Localization In Vivo" @default.
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• W2154841454 doi "https://doi.org/10.1091/mbc.e05-04-0356" @default.
• W2154841454 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/1382305" @default.
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• W2154841454 hasPublicationYear "2006" @default.
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