Keratin-associated protein 19-3 (GTHRP) (Glycine/tyrosine-rich protein)
1_MSYYG 6_ SYYGG 11_ LGYGC 16_ GGFGG 21_ LGYGY 26_ GCGCG 31_ SFRRL 36_ GSGCG 41_ YGGYG 46_ YGSGF 51_ GGYGY 56_ GSGFG 61_ GYGYG 66_ CYRPS 71_ YYGGY 76_GFSGF
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