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  • Title: Amino acid sequence of the carboxy-terminal cyanogen bromide peptide of the human fibrinogen beta-chain: homology with the corresponding gamma-chain peptide and presence in fragment D.
    Author: Takagi T, Doolittle RF.
    Journal: Biochim Biophys Acta; 1975 Apr 29; 386(2):617-22. PubMed ID: 124585.
    Abstract:
    The carboxy-terminal cyanogen bromide fragment of the human fibrinogen beta-chain has been isolated and its structure determined. It is a nonapeptide with the sequence Lys-Ile-Arg-Pro-Phe-Phe-Pro-Gln-Gln and is homologous with a portion of the carboxy-terminal cyanogen bromide fragment of the gamma-chain. The peptide has also been isolated in full yield from cyanogen bromide digests of the plasmin-derived fragment D, indicating that the carboxy-terminal region of the beta-chain is resistant to plasmin digestion. In contrast, a small portion of the corresponding gamma-chain carboxy-terminal region was missing in the same fragment D.
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