Effects of glutathione-oxidizing agents on microtubule assembly and microtubule-dependent surface properties of human neutrophils.
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Effects of glutathione-oxidizing agents on microtubule assembly and microtubule-dependent surface properties of human neutrophils
In human peripheral blood polymorphonuclear leukocytes and lymphocytes, GSH-oxidizing agents promote the movement of surface-bound concanavalin A (Con A) into caps and inhibit the assembly of microtubules (MT) that is normally induced by Con A binding. Con A capping and inhibition of MT assembly occur when GSH levels in cell suspensions are decreased by 30-70%, and return to GSH to control leve...
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Two opposing effects of calmodulin on microtubule assembly depend on the presence of microtubule-associated proteins.
The effect of bovine brain calmodulin on the assembly of pure bovine brain tubulin has been examined in the presence and absence of microtubule-associated proteins (MAPs). In the absence of MAPs, calmodulin enhances the rate and extent of polymerization of pure tubulin, probably by sequestering Ca2+ from tubulin since the effect is mimicked by ethylene glycol bis(beta-aminoethyl ether)N,N,N',N'...
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Dr. Mundy is the recipient of a Faculty Research Award (FRA-148) from the American Cancer Society. Dr. Mundy's present address is Divison ofEndocrinology and Metabolism, Department of Medicine, University ofTexas Health Science Center, San Antonio, Tex. Received for publication 23 April 1979 and in revised form 29 August 1980. INTRODUCTION Osteolytic bone metastases are a frequent complication ...
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ژورنال
عنوان ژورنال: Journal of Cell Biology
سال: 1976
ISSN: 0021-9525,1540-8140
DOI: 10.1083/jcb.71.3.921