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Updated: Jan 29, 2026

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The Conserved Role of YidC in Membrane Protein Biogenesis
Sri Karthika Shanmugam1, Ross E Dalbey1
1Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210.
Abstract:
YidC insertase plays a pivotal role in the membrane integration, folding, and assembly of a number of proteins, including energy-transducing respiratory complexes, both autonomously and in concert with the SecYEG channel in bacteria. The YidC family of proteins is widely conserved in all domains of life, with new members recently identified in the eukaryotic endoplasmic reticulum membrane. Bacterial and organellar members share the conserved 5-transmembrane core, which forms a unique hydrophilic cavity in the inner leaflet of the bilayer accessible from the cytoplasm and the lipid phase. In this chapter, we discuss the YidC family of proteins, focusing on its mechanism of substrate insertion independently and in association with the Sec translocon.
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