Properties of calcium-binding protein isolated from the soluble fraction of normal rat liver.

Abstract
The MW of Ca-binding protein (CaBP) purified from the soluble fraction of normal rat liver was estimated to be 28,800 by calibrated gel filtration on Sephadex G-100. Amino acid analysis of the CaBP showed glycine and glutamic acid to be the predominant amino acids. The Ca binding constant was 4.19 .times. 105 M-1 by equilibrium dialysis and there was apparently 6-7 high affinity binding sites for Ca/molecule of protein.