Datta S, Datta SC. Buffalo alpha S1-casein; its terminal residues and amino acid composition.
EXPERIENTIA 1981;
37:1260-1. [PMID:
7327225 DOI:
10.1007/bf01948347]
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Abstract
Buffalo alpha S1-casein was treated with carboxypeptidase-A to determine the C-terminal amino acid residue, which was - leucine-tryptophan. The Sakaguchi reagent was used to confirm arginine as the N-terminal amino acid. The colored p-phenylazophenyl thiohydantoins of tryptophan and arginine released from C- and N-terminals respectively were quantitatively estimated and from this molecular weights of buffalo alpha S1 casein were calculated and found to be 26,300 and 26,100 respectively.
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