Keratin-associated protein 19-4
1_MSYYG 6_ SYYRG 11_ LGYGC 16_ GGFGG 21_ LGYGY 26_ GCGCG 31_ SFRRL 36_ GYGCG 41_ FGGNG 46_ YGYCR 51_ PSCYG 56_ GYGFS 61_ ILLKS 66_ YPEDT 71_ ISEVI 76_RRSFN
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