Isolation and purification of an antibody to 67-KD calcimedinPB Moore Laboratory Animal Research Center, Rockefeller University, New York, New York 10021-6399. The 67-KD calcimedin is a calcium-binding protein isolated from several muscle tissues. The protein shows apparent Mr of 67,000 by SDS- polyacrylamide gel electrophoresis. An antibody has been prepared by immunizing sheep with the protein purified from chicken gizzard smooth muscle. This antibody recognizes 67-KD calcimedin but not calmodulin, bovine serum albumin, transferrin, or brain p68 calelectrin. The presence of 67-KD calcimedin is demonstrated in the smooth muscle cell lines A10 and DDT1MF-2 as well as in primary cultures of chicken breast and heart muscle, by immunoprecipitation and immunofluorescence. The 67- KD calcimedin, being responsive to calcium, may play a role in calcium- mediated cell regulation. This report identifies several cells that may be useful for further delineation of the cellular role of 67-KD calcimedin.
Volume 36,
Issue 2,
pp. 185-192,
02/01/1988
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