YidC, a Newly Defined Evolutionarily Conserved Protein, Mediates Membrane Protein Assembly in Bacteria
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M. Chen
Abstract
Membranes contain proteins that catalyze a variety of reactions, which lead to the selective permeability of the membrane. For membrane proteins to function as receptors, transporters, channels, and ATPases, they must be targeted to their correct membrane and inserted into the lipid bilayer. Recently, a new membrane component called YidC was discovered that mediates the insertion of proteins into membranes in bacteria. YidC homologs also exist in mitochondria and chloroplasts. Depletion of YidC from the cell interferes with the insertion of membrane proteins that insert both dependent and independent of the Sec YEG/SecDFYajC machinery. YidC directly interacts with membrane proteins during the membrane protein insertion process and assists in the folding of the hydrophobic regions into the membrane bilayer. The chloroplast and bacterial YidC homologs are truly functional homologs because the chloroplast homolog Alb3 functionally complements the bacterial YidC depletion strain. The role of YidC in the membrane insertion pathway will be reviewed.
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Biological Chemistry 125th Anniversary
- Kai Simons Felix Hoppe-Seyler Lecturer 2002
- Lipid Rafts in Protein Sorting and Cell Polarity in Budding Yeast Saccharomyces cerevisiae
- Paper of the Year 2001
- RNA-Mediated RNA Degradation in Transgene- and Virus-Induced Gene Silencing
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- In the Cellular Garden of Forking Paths: How p38 MAPKs Signal for Downstream Assistance
- The Human Steroid Hydroxylases CYP11B1 and CYP11B2
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- Vascular Endothelial Growth Factor Receptor Family Genes: When Did the Three Genes Phylogenetically Segregate?
- The TNFTNF Receptor System
- Fast Regulation of Cytochrome P450 Activities by Phosphorylation and Consequences for Drug Metabolism and Toxicity
- Protein Transduction: A Novel Tool for Tissue Regeneration
- NF-κB A Potential Therapeutic Target for Inhibition of Human Cytomegalovirus (Re)activation?
- Three-State Equilibrium of Escherichia coli Trigger Factor
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- The Hyaluronan-Binding Serine Protease from Human Plasma Cleaves HMW and LMW Kininogen and Releases Bradykinin
- Jasmonate-Induced Lipid Peroxidation in Barley Leaves Initiated by Distinct 13-LOX Forms of Chloroplasts
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- Study of Chaperone-Like Activity of Human Haptoglobin: Conformational Changes under Heat Shock Conditions and Localization of Interaction Sites
