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Bay K8644 like activity of an antibody against a 60 kDa tubular membrane protein
Authors:D Chatterjee  P Lahiri  A Chatterjee  M Chakraborty
Institution:Department of Zoology, University of Calcutta, India.
Abstract:Partial purification of the dihydropyridine receptor from rat skeletal muscle demonstrated mainly a 60 kDa band in SDS-polyacrylamide gel. An antibody raised against that protein behaved as a calcium channel agonist viz. Bay K8644. The affinity purified antibody, when added to cultured heart cells, increased the beat rate 40-80% depending on the titer of the antiserum. The antibody also woke up the beats of the cells previously blocked with the channel antagonist, nifedipine. Immunoblot analysis indicated that the receptor of this antibody in heart cell membrane is also a 60 kDa protein.
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