RING finger palmitoylation of the endoplasmic reticulum Gp78 E3 ubiquitin ligase.
[No authors listed]
摘要
Gp78 is an E3 ubiquitin ligase within the endoplasmic reticulum-associated degradation pathway. We show that Flag-tagged gp78 undergoes sulfhydryl cysteine palmitoylation (S-palmitoylation) within the RING finger motif, responsible for its ubiquitin ligase activity. Screening of 19 palmitoyl acyl transferases (PATs) identified five that increased gp78 RING finger palmitoylation. Endoplasmic reticulum (ER)-localized Myc-DHHC6 overexpression promoted the peripheral ER distribution of Flag-gp78 while RING finger mutation and the palmitoylation inhibitor 2-bromopalmitate restricted gp78 to the central ER. Palmitoylation of RING finger cysteines therefore regulates gp78 distribution to the peripheral ER.
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基因功能
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原始数据
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文献解读
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