Geranylgeranylation of Rab proteins

Geranylgeranylation of Rab proteins
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DOI:
10.1042/bst0240699
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发表时间:
1996-08-01
影响因子:
3.9
通讯作者:
Seabra, MC
Seabra, MC
中科院分区:
生物学3区
文献类型:
--
作者:
Desnoyers, L;Anant, JS;Seabra, MC

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迄今为止,已鉴定出三种不同的蛋白质异戊二烯基转移酶([3] 中进行了综述),它们可分为两个功能类别:CAAX 异戊二烯基转移酶、法尼基转移酶和香叶基香叶基转移酶 I 型 (GGTase-I),以及 Rab 香叶基香叶基转移酶或 I1 型 GGT 酶 (Rab GGTase)。 CAAX 异戊二烯基转移酶可识别细胞内蛋白质底物 C 末端的独特基序。该基序指定为 CAAX,其中 C 是半胱氨酸,A 是脂肪族氨基酸,X 是任何氨基酸。 CAAX 序列是转移酶与蛋白质底物结合的主要决定因素。如果 CAAX 序列中的最后一个氨基酸是蛋氨酸或丝氨酸,则该蛋白质是法尼基转移酶的底物,而如果它是亮氨酸,则它成为法尼基转移酶的底物
‘Three distinct protein prenyltransferases have been identified to date (reviewed in [3]), which can be classified into two functional classes: the CAAX prenyltransferases, farnesyltransferase and geranylgeranyltransferase type I (GGTase-I), and the Rab geranylgeranyltransferase or GGTase type I1 (Rab GGTase). CAAX prenyltransferases recognize a distinct motif at the C-terminus of intracellular protein substrates. The motif is designated CAAX, where C is cysteine, A is an aliphatic amino acid and X is any amino acid. The CAAX sequence is the primary determinant for transferase binding to a protein substrate. If the last amino acid in the CAAX sequence is a methionine or serine, the protein is a substrate of farnesyltransferase, whereas if it is a leucine it becomes a substrate