casein-kappa(43-97) |
casein-kappa(61-44) |
S3 |
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Also: kappa-casein(58-61). This peptide with the sequence YPYY is derived from bovine casein-kappa and acts as an antagonist for opioid receptors (Xu, 1998).
For peptides with related activities see also: casoxins, exorphins. See also cryptides for bioactive fragments of parent proteins. For other proteins (or fragments thereof) with at least one additional activity that differs from the established 'classical' activity of the parent protein see also: Dual identity proteins and Cryptides MiniCOPE Dictionary.
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