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Molecular perspectives on p97-VCP: progress in understanding its structure and diverse biological functions

  1. Author:
    Wang, Q.
    Song, C. C.
    Li, C. C. H.

  2. Author Address

    Li, CCH, NCI, Basic Res Program, SAIC Frederick, Frederick, MD 21702 USA NCI, Basic Res Program, SAIC Frederick, Frederick, MD 21702 USA. Natl Canc Inst, Basic Res Lab, Frederick, MD 21702 USA.
    1. Year: 2004
    2. Date: APR-MAY
  2. Journal: Journal of Structural Biology
    1. 146
    2. 1-2
    3. Pages: 44-57
  4. Type of Article: Article
  1. Abstract:

    The 97-kDa valosin-containing protein (p97 or VCP) is a type-II AAA ((A) over bar TPases (a) over bar ssociated with a variety of (a) over bar ctivities) ATPases, which are characterized by possessing two conserved ATPase domains. VCP forms a stable homo-hexameric structure, and this two-tier ring-shaped complex acts as a molecular chaperone that mediates many seemingly unrelated cellular activities. The involvement of VCP in the ubiquitin-proteasome degradation pathway and the identification of VCP cofactors provided us important clues to the understanding of how this molecular chaperone works. In this review, we summarize the reported biological functions of VCP and explore the molecular mechanisms underlying the diverse cellular functions. We discuss the structural and biochemical studies, and elucidate how this sophisticated enzymatic machine converts chemical energy into the mechanical forces required for the chaperone activity. Published by Elsevier Inc

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