Reference: Pleasure IT, et al. (1993) Valosin-containing protein, VCP, is a ubiquitous clathrin-binding protein. Nature 365(6445):459-62

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Abstract

Clathrin is the structural protein of coated membranes involved in receptor-mediated endocytosis and aspects of Golgi sorting in eukaryotic cells. We have now detected a stoichiometric complex of clathrin with a novel protein of M(r) approximately 100,000 (100K) in lysates of different mammalian cells. Formation of the complex, which also includes the 70K heat-shock protein Hsc70, occurs within 15 min of synthesis. The 100K protein has been identified as valosin-containing protein (VCP; ref. 1), an early substrate for tyrosine phosphorylation on T-cell receptor activation. Further, VCP is the mammalian homologue of yeast Cdc48p (ref. 3) and is a member of a larger gene family that includes putative ATP-binding proteins involved in vesicle transport and fusion, 26S proteasome function, regulation of the expression of human immunodeficiency virus, and assembly of peroxisomes. The association with clathrin and the morphological and catalytic similarity to the chaperonin proteins indicate that VCP may modulate protein-protein interactions in membrane transport processes.

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Journal Article
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Pleasure IT, Black MM, Keen JH
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