rab27A, which encodes a small GTP-binding protein, was recently identified as a gene in which mutations caused human hemophagocytic syndrome (Griscelli syndrome) and ashen mice, which exhibit defects in melanosome transport as well as in regulated granule exocytosis in cytotoxic T lymphocytes. However, little is known about the molecular mechanism ... More
Cholesterol modulates the membrane binding and intracellular distribution of annexin 6.
Authors de Diego Iñaki; Schwartz Felix; Siegfried Heide; Dauterstedt Paul; Heeren Joerg; Beisiegel Ulrike; Enrich Carlos; Grewal Thomas;
JournalJ Biol Chem
PubMed ID12070178
Annexins are Ca(2+)- and phospholipid-binding proteins that are widely expressed in mammalian tissues and that bind to different cellular membranes. In recent years its role in membrane traffic has emerged as one of its predominant functions, but the regulation of its intracellular distribution still remains unclear. We demonstrated that annexin ... More
Functional differences of tau isoforms containing 3 or 4 C-terminal repeat regions and the influence of oxidative stress.
Authors Utton M A; Gibb G M; Burdett I D; Anderton B H; Vandecandelaere A;
JournalJ Biol Chem
PubMed ID11438517
We report functional differences between tau isoforms with 3 or 4 C-terminal repeats and a difference in susceptibility to oxidative conditions, with respect to the regulation of microtubule dynamics in vitro and tau-microtubule binding in cultured cells. In the presence of dithiothreitol in vitro, a 3-repeat tau isoform promotes microtubule ... More