Assembly of the yeast vacuolar proton-translocating ATPase
Assembly of the yeast vacuolar proton-translocating ATPase
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DOI：
10.1023/a:1005492429471
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发表时间：
1999-02-01
影响因子：
3
通讯作者：
Stevens, TH
中科院分区：
文献类型：
--
作者：
Graham, LA;Stevens, TH
The yeast vacuolar proton-translocating ATPase (V-ATPase) is the best characterized member of the V-ATPase family. Biochemical and genetic screens led to the identification of a large number of genes in yeast, designated VMA, encoding proteins required to assemble a functional V-ATPase. A total of thirteen genes encode subunits of the final enzyme complex. In addition to subunit-encoding genes, we have identified three genes that code for proteins that are not part of the final V-ATPase complex yet required for its assembly. We refer to these nonsubunit Vma proteins as assembly factors, since their function is dedicated to assembling the V-ATPase. The assembly factors, Vmal2p, Vma21p, and Vma22p are localized to the endoplasmic reticulum (ER) and aid the assembly of newly synthesized V-ATPase subunits that are translocated into the ER membrane. At least two of these proteins, Vma12p and Vma22p, function together in an assembly complex and interact directly with nascent V-ATPase subunits.
