BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH
|
2004年
/
1694卷
/
1-3期
关键词:
protein-conducting channel;
translocase;
SecYEG;
protein translocation;
secretion;
D O I:
10.1016/j.bbamcr.2004.02.009
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
In bacteria, the translocase mediates the translocation of proteins into or across the cytosolic membrane. It consists of a membrane embedded protein-conducting channel and a peripherally associated motor domain, the ATPase SecA. The channel is formed by SecYEG, a multimeric protein complex that assembles into oligomeric forms. The structure and subunit composition of this protein-conducting channel is evolutionary conserved and a similar system is found in the endoplasmic reticulum of eukaryotes and cytoplasmic membrane of archaea. The ribosome and other membrane proteins can associate with the protein-conducting channel complex and affect its activity or functionality. (C) 2004 Elsevier B.V. All rights reserved.