Add time:08/19/2019         Source:sciencedirect.com

The complete amino acid sequence of ‘avian thymic hormone’ (ATH), a protein from thymus tissue that appears to promote immune maturation in chicken bone marrow cells in culture, is presented. The sequence was obtained from sequences of ATH peptides isolated by HLPC after tryptic, chymotryptic, peptic or S aureus V8 protease digestions. The protein is a parvalbumin consisting of 108 residues with a blocked amino terminus, a single cysteine, tyrosine, proline and arginine and no arginine and no histidine, methionine or tryptophan. This is the first amino acid sequence of a parvalbumin which is not derived from muscle tissue.

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