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  • Title: The high-molecular-weight proteins of bovine brain plain synaptic vesicles.
    Author: March PE, Antonian E, Schneider DM, Rothwarf DM, Thornton ER.
    Journal: Neurochem Res; 1987 Jul; 12(7):635-40. PubMed ID: 3614514.
    Abstract:
    High molecular mass polypeptides (Mr greater than 100,000) of plain synaptic vesicles from bovine cerebral cortex were separated using porous polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate. Four major bands, of Mr 262,000, 249,000, 216,000, and 173,000, were resolved. Investigations into the membrane association of the Mr 216,000 and 173,000 proteins by means of solubilization experiments and Sepharose 4B chromatography indicate that the former is a peripheral protein and the latter is more firmly attached, possibly an integral protein. Finally, the Mr 216,000 protein was shown to be highly enriched in synaptic vesicles compared to other brain subfractions. It thus appears to be specifically associated with synaptic vesicles and therefore may have an important role specific to synaptic vesicle function or structure.
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