The purification and complete amino acid sequence of the 9000-Mr Ca2+-binding protein from rat placenta. Identity with the vitamin D-dependent intestinal Ca2+-binding protein.
A 9000-Mr Ca2+-binding protein was isolated from rat placenta and purified to homogeneity by h.p.l.c. procedures. The complete amino acid sequence was established for the 78-residue placental protein. A sequence analysis of a minor component of the rat intestinal Ca2+-binding protein (residues 4-78) and a tryptic peptide (residues 55-74), both purified by h.p.l.c., showed both proteins to be identical. Thus this placental 9000-Mr Ca2+-binding protein is the same gene product as the intestinal Ca2+-binding protein whose synthesis is dependent on vitamin D.
D000595:Amino Acid Sequence; D000818:Animals; D002135:Calcium-Binding Proteins / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D005260:Female; D007413:Intestinal Mucosa / Q000032:analysis; D010446:Peptide Fragments / Q000032:analysis; D010920:Placenta / Q000032:analysis*; D011247:Pregnancy; D051381:Rats; D011919:Rats, Inbred Strains; D064030:S100 Calcium Binding Protein G / Q000302:isolation & purification*
D002135:Calcium-Binding Proteins; D010446:Peptide Fragments; D064030:S100 Calcium Binding Protein G