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Publication Detail
Inositol pyrophosphates regulate endocytic trafficking.
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Journal Article
  • Authors:
    Saiardi A, Sciambi C, McCaffery JM, Wendland B, Snyder SH
  • Publication date:
    29/10/2002
  • Pagination:
    14206, 14211
  • Journal:
    Proc Natl Acad Sci U S A
  • Volume:
    99
  • Issue:
    22
  • Country:
    United States
  • Print ISSN:
    0027-8424
  • PII:
    212527899
  • Language:
    eng
  • Keywords:
    Endocytosis, Inositol Phosphates, Phosphotransferases (Alcohol Group Acceptor), Phosphotransferases (Phosphate Group Acceptor), Saccharomyces cerevisiae, Saccharomyces cerevisiae Proteins
Abstract
The high energy potential and rapid turnover of the recently discovered inositol pyrophosphates, such as diphosphoinositol-pentakisphosphate and bis-diphosphoinositol-tetrakisphosphate, suggest a dynamic cellular role, but no specific functions have yet been established. Using several yeast mutants with defects in inositol phosphate metabolism, we identify dramatic membrane defects selectively associated with deficient formation of inositol pyrophosphates. We show that this phenotype reflects specific abnormalities in endocytic pathways and not other components of membrane trafficking. Thus, inositol pyrophosphates are major regulators of endocytosis.
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