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  • phospholipid-binding  (1)
  • 1
    Electronic Resource
    Electronic Resource
    New York, N.Y. : Wiley-Blackwell
    Journal of Cellular Biochemistry 46 (1991), S. 86-93 
    ISSN: 0730-2312
    Keywords: Ca2+-dependent ; phospholipid-binding ; proteolysis ; purification ; repeats ; immunoreactivity ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Annexin VI has eight highly conserved repeated domains; all other annexins have four. Díaz-Muñoz et al. (J Biol Chem 265:15894, 1990) reported that annexin VI alters the gating properties of the ryanodine-sensitive Ca2+-release channel isolated from sarcoplasmic reticulum. To investigate the domain structure of rat annexin VI (67 kDa calcimedin) required for this channel regulation, various proteolytic digestions were performed. In each case, protease-resistant core polypeptides were produced. Annexin VI was digested with V8 protease and two core polypeptides were purified by Ca2+-dependent phospholipid binding followed by HPLC. The purified fragments were shown to be derived from the N- and C-terminal halves of annexin VI, and demonstrated differential immunoreactivity with monoclonal antibodies to rat annexin VI. While both core polypeptides retained their ability to bind phospholipids in a Ca2+-dependent manner, they did not regulate the sarcoplasmic reticulum Ca2+-release channel as did intact annexin VI.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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