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Bastiani, Michele; Liu, Libin; Hill, Michelle M.; Jedrychowski, Mark P.; Nixon, Susan J.; Lo, Harriet P.; Abankwa, Daniel; Luetterforst, Robert; Fernandez-Rojo, Manuel; Breen, Michael R.; Gygi, Steven P.; Vinten, Jorgen; Walser, Piers J.; North, Kathryn N.; Hancock, John F.; Pilch, Paul F.; Parton, Robert G.

MURC/Cavin-4 and cavin family members form tissue-specific caveolar complexes

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  • Media type: E-Article
  • Title: MURC/Cavin-4 and cavin family members form tissue-specific caveolar complexes
  • Contributor: Bastiani, Michele; Liu, Libin; Hill, Michelle M.; Jedrychowski, Mark P.; Nixon, Susan J.; Lo, Harriet P.; Abankwa, Daniel; Luetterforst, Robert; Fernandez-Rojo, Manuel; Breen, Michael R.; Gygi, Steven P.; Vinten, Jorgen; Walser, Piers J.; North, Kathryn N.; Hancock, John F.; Pilch, Paul F.; Parton, Robert G.
  • Published: Rockefeller University Press, 2009
  • Published in: Journal of Cell Biology, 185 (2009) 7, Seite 1259-1273
  • Language: English
  • DOI: 10.1083/jcb.200903053
  • ISSN: 0021-9525; 1540-8140
  • Origination:
  • Footnote:
  • Description: Polymerase I and transcript release factor (PTRF)/Cavin is a cytoplasmic protein whose expression is obligatory for caveola formation. Using biochemistry and fluorescence resonance energy transfer–based approaches, we now show that a family of related proteins, PTRF/Cavin-1, serum deprivation response (SDR)/Cavin-2, SDR-related gene product that binds to C kinase (SRBC)/Cavin-3, and muscle-restricted coiled-coil protein (MURC)/Cavin-4, forms a multiprotein complex that associates with caveolae. This complex can constitutively assemble in the cytosol and associate with caveolin at plasma membrane caveolae. Cavin-1, but not other cavins, can induce caveola formation in a heterologous system and is required for the recruitment of the cavin complex to caveolae. The tissue-restricted expression of cavins suggests that caveolae may perform tissue-specific functions regulated by the composition of the cavin complex. Cavin-4 is expressed predominantly in muscle, and its distribution is perturbed in human muscle disease associated with Caveolin-3 dysfunction, identifying Cavin-4 as a novel muscle disease candidate caveolar protein.
  • Access State: Open Access