Keratin-associated protein 9-4 (Keratin-associated protein 9.4) (Ultrahigh sulfur keratin-associated protein 9.4)
1_MTHCC 6_ SPCCQ 11_ PTCCR 16_ TTCCR 21_ TTCWK 26_ PTTVT 31_ TCSST 36_ PCCQP 41_ SCCVS 46_ SCCQP 51_ CCRPT 56_ CCQNT 61_ CCQPT 66_ CVTSC 71_ CQPSC 76_ CSTPC 81_ CQPTC 86_ CGSSC 91_ DQSSS 96_ CAPVY 101_ CRRTC 106_ YYPTT 111_ VCLPG 116_ CLNQS 121_ CGSNC 126_ CQPCC 131_ RPACC 136_ ETTCF 141_ QPTCV 146_SSCCQ
1: In the hair cortex, hair keratin intermediate filaments are embedded in an interfilamentous matrix, consisting of hair keratin-associated proteins (KRTAP), which are essential for the formation of a rigid and resistant hair shaft through their extensive disulfide bond cross-linking with abundant cysteine residues of hair keratins. The matrix proteins include the high-sulfur and high-glycine-tyrosine keratins