Keratin 1

Keratin 1, type II
Identifiers
Symbols	KRT1 ; CK1; EHK; EHK1; EPPK; K1; KRT1A; NEPPK
External IDs	OMIM: 139350 MGI: 96698 HomoloGene: 38146 GeneCards: KRT1 Gene
Gene ontology Molecular function • receptor activity • structural molecule activity • protein binding • carbohydrate binding Cellular component • extracellular space • nucleus • cytoskeleton • plasma membrane • membrane • extracellular matrix • keratin filament • extracellular exosome • blood microparticle Biological process • complement activation, lectin pathway • retina homeostasis • response to oxidative stress • fibrinolysis • regulation of angiogenesis • negative regulation of inflammatory response • establishment of skin barrier Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	3848	16678
Ensembl	ENSG00000167768	ENSMUSG00000046834
UniProt	P04264	P04104
RefSeq (mRNA)	NM_006121	NM_008473
RefSeq (protein)	NP_006112	NP_032499
Location (UCSC)	Chr 12: 52.67 – 52.68 Mb	Chr 15: 101.85 – 101.85 Mb
PubMed search

Keratin 1 is a member of the keratin family. It is specifically expressed in the spinous and granular layers of the epidermis with family member keratin 10. Mutations in this gene have been associated with the variants of bullous congenital ichthyosiform erythroderma in which the palms and soles of the feet are affected.

The protein encoded by this gene is a member of the keratin gene family. The type II cytokeratins consist of basic or neutral proteins which are arranged in pairs of heterotypic keratin chains coexpressed during differentiation of simple and stratified epithelial tissues. This type II cytokeratin is specifically expressed in the spinous and granular layers of the epidermis with family member KRT10 and mutations in these genes have been associated with bullous congenital ichthyosiform erythroderma. The type II cytokeratins are clustered in a region of chromosome 12q12-q13.^[1]

Interactions

Keratin 1 has been shown to interact with Desmoplakin^[2] and PRKCE.^[3]

See also

• 34βE12

References

1. "Entrez Gene: KRT1 keratin 1 (epidermolytic hyperkeratosis)".
2. Meng, J J; Bornslaeger E A; Green K J; Steinert P M; Ip W (Aug 1997). "Two-hybrid analysis reveals fundamental differences in direct interactions between desmoplakin and cell type-specific intermediate filaments". J. Biol. Chem. (UNITED STATES) 272 (34): 21495–503. doi:10.1074/jbc.272.34.21495. ISSN 0021-9258. PMID 9261168.
3. England, Karen; Ashford David; Kidd Daniel; Rumsby Martin (Jun 2002). "PKC epsilon is associated with myosin IIA and actin in fibroblasts". Cell. Signal. (England) 14 (6): 529–36. doi:10.1016/S0898-6568(01)00277-7. ISSN 0898-6568. PMID 11897493.

Further reading

• Whittock NV, Ashton GH, Griffiths WA, et al. (2001). "New mutations in keratin 1 that cause bullous congenital ichthyosiform erythroderma and keratin 2e that cause ichthyosis bullosa of Siemens". Br. J. Dermatol. 145 (2): 330–5. doi:10.1046/j.1365-2133.2001.04327.x. PMID 11531804.
• Langbein L, Schweizer J (2005). "Keratins of the human hair follicle". Int. Rev. Cytol. 243: 1–78. doi:10.1016/S0074-7696(05)43001-6. PMID 15797458.
• Korge BP, Compton JG, Steinert PM, Mischke D (1993). "The two size alleles of human keratin 1 are due to a deletion in the glycine-rich carboxyl-terminal V2 subdomain". J. Invest. Dermatol. 99 (6): 697–702. doi:10.1111/1523-1747.ep12614149. PMID 1281859.
• Compton JG, DiGiovanna JJ, Santucci SK, et al. (1993). "Linkage of epidermolytic hyperkeratosis to the type II keratin gene cluster on chromosome 12q". Nat. Genet. 1 (4): 301–5. doi:10.1038/ng0792-301. PMID 1284546.
• Rothnagel JA, Dominey AM, Dempsey LD, et al. (1992). "Mutations in the rod domains of keratins 1 and 10 in epidermolytic hyperkeratosis". Science 257 (5073): 1128–30. doi:10.1126/science.257.5073.1128. PMID 1380725.
• Chipev CC, Korge BP, Markova N, et al. (1992). "A leucine----proline mutation in the H1 subdomain of keratin 1 causes epidermolytic hyperkeratosis". Cell 70 (5): 821–8. doi:10.1016/0092-8674(92)90315-4. PMID 1381288.
• Dawson SJ, White LA (1992). "Treatment of Haemophilus aphrophilus endocarditis with ciprofloxacin". J. Infect. 24 (3): 317–20. doi:10.1016/S0163-4453(05)80037-4. PMID 1602151.
• Mansbridge JN, Hanawalt PC (1988). "Role of transforming growth factor beta in the maturation of human epidermal keratinocytes". J. Invest. Dermatol. 90 (3): 336–41. doi:10.1111/1523-1747.ep12456286. PMID 2450142.
• Lessin SR, Huebner K, Isobe M, et al. (1989). "Chromosomal mapping of human keratin genes: evidence of non-linkage". J. Invest. Dermatol. 91 (6): 572–8. doi:10.1111/1523-1747.ep12477087. PMID 2461420.
• Popescu NC, Bowden PE, DiPaolo JA (1989). "Two type II keratin genes are localized on human chromosome 12". Hum. Genet. 82 (2): 109–12. doi:10.1007/BF00284039. PMID 2470667.
• Johnson LD, Idler WW, Zhou XM, et al. (1985). "Structure of a gene for the human epidermal 67-kDa keratin". Proc. Natl. Acad. Sci. U.S.A. 82 (7): 1896–900. doi:10.1073/pnas.82.7.1896. PMC 397440. PMID 2580302.
• Steinert PM, Parry DA, Idler WW, et al. (1985). "Amino acid sequences of mouse and human epidermal type II keratins of Mr 67,000 provide a systematic basis for the structural and functional diversity of the end domains of keratin intermediate filament subunits". J. Biol. Chem. 260 (11): 7142–9. PMID 2581964.
• Yang JM, Chipev CC, DiGiovanna JJ, et al. (1994). "Mutations in the H1 and 1A domains in the keratin 1 gene in epidermolytic hyperkeratosis". J. Invest. Dermatol. 102 (1): 17–23. doi:10.1111/1523-1747.ep12371725. PMID 7507151.
• McLean WH, Eady RA, Dopping-Hepenstal PJ, et al. (1994). "Mutations in the rod 1A domain of keratins 1 and 10 in bullous congenital ichthyosiform erythroderma (BCIE)". J. Invest. Dermatol. 102 (1): 24–30. doi:10.1111/1523-1747.ep12371726. PMID 7507152.
• Syder AJ, Yu QC, Paller AS, et al. (1994). "Genetic mutations in the K1 and K10 genes of patients with epidermolytic hyperkeratosis. Correlation between location and disease severity". J. Clin. Invest. 93 (4): 1533–42. doi:10.1172/JCI117132. PMC 294170. PMID 7512983.
• Kimonis V, DiGiovanna JJ, Yang JM, et al. (1995). "A mutation in the V1 end domain of keratin 1 in non-epidermolytic palmar-plantar keratoderma". J. Invest. Dermatol. 103 (6): 764–9. doi:10.1111/1523-1747.ep12412771. PMID 7528239.
• Yoon SJ, LeBlanc-Straceski J, Ward D, et al. (1995). "Organization of the human keratin type II gene cluster at 12q13". Genomics 24 (3): 502–8. doi:10.1006/geno.1994.1659. PMID 7536183.
• Peehl DM, Wong ST, Stamey TA (1993). "Vitamin A regulates proliferation and differentiation of human prostatic epithelial cells". Prostate 23 (1): 69–78. doi:10.1002/pros.2990230107. PMID 7687781.
• Senshu T, Kan S, Ogawa H, et al. (1996). "Preferential deimination of keratin K1 and filaggrin during the terminal differentiation of human epidermis". Biochem. Biophys. Res. Commun. 225 (3): 712–9. doi:10.1006/bbrc.1996.1240. PMID 8780679.
• Steinert PM, Marekov LN (1997). "Direct evidence that involucrin is a major early isopeptide cross-linked component of the keratinocyte cornified cell envelope". J. Biol. Chem. 272 (3): 2021–30. doi:10.1074/jbc.272.3.2021. PMID 8999895.