KRTAP1-4, Official Symbol KRTAP1-4provided by HGNC Official Full Name keratin associated protein 1-4provided by HGNC Primary source HGNC:HGNC:18904 See related Ensembl:ENSG00000204887 MIM:608821; AllianceGenome:HGNC:18904 Gene type protein coding RefSeq status VALIDATED Organism Homo sapiens Lineage Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo Also known as KAP1.4; KRTAP1.4 Summary The main structural proteins of mammalian hair fiber are the hair keratins (see MIM 601077) and the keratin-associated proteins (KAPs), which form a rigid and resistant hair shaft through extensive disulfide bond crosslinking with the abundant cysteines of hair keratins (Shimomura et al., 2002 [PubMed 12228244]).[supplied by OMIM, Jan 2009] Orthologs all