Occurrence of the Cys-Cys sequence in keratins.
D000595:Amino Acid Sequence; D000818:Animals; D003553:Cystine / Q000032:analysis*; D004586:Electrophoresis; D007328:Insulin / Q000032:analysis; D007633:Keratins / Q000032:analysis*; D013455:Sulfur / Q000032:analysis; D014935:Wool / Q000032:analysis
D007328:Insulin; D003553:Cystine; D007633:Keratins; D013455:Sulfur