Keratin 12

KRT12
Identifiers
Aliases	KRT12, K12, keratin 12, MECD1
External IDs	OMIM: 601687; MGI: 96687; HomoloGene: 188; GeneCards: KRT12; OMA:KRT12 - orthologs
Gene location (Human) Chr. Chromosome 17 (human) Band 17q21.2 Start 40,861,303 bp End 40,867,223 bp
Gene location (Mouse) Chr. Chromosome 11 (mouse) Band 11 D|11 62.92 cM Start 99,306,492 bp End 99,313,085 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in gonad testicle mucosa of transverse colon eye duodenum skin of abdomen rectum skin of leg vagina ectocervix Top expressed in corneal stroma ciliary body conjunctival fornix epithelium of lens retinal pigment epithelium primary oocyte olfactory tubercle piriform cortex secondary oocyte iris More reference expression data BioGPS n/a
Gene ontology Molecular function structural molecule activity Cellular component intermediate filament extracellular exosome cytosol Biological process visual perception keratinization cornification Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 3859 268482 Ensembl ENSG00000187242 ENSMUSG00000020912 UniProt Q99456 Q64291 RefSeq (mRNA) NM_000223 NM_010661 RefSeq (protein) NP_000214 NP_034791 Location (UCSC) Chr 17: 40.86 – 40.87 Mb Chr 11: 99.31 – 99.31 Mb PubMed search
Wikidata
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Keratin 12 is a protein that in humans is encoded by the KRT12 gene. It's a type I keratin.

Keratin 12 is keratin found expressed in corneal epithelia. Mutations in the gene encoding this protein lead to Meesmann corneal dystrophy.

Further reading

• Yoon MK, Warren JF, Holsclaw DS, et al. (2004). "A novel arginine substitution mutation in 1A domain and a novel 27 bp insertion mutation in 2B domain of keratin 12 gene associated with Meesmann's corneal dystrophy". Br J Ophthalmol. 88 (6): 752–6. doi:10.1136/bjo.2003.032870. PMC 1772161. PMID 15148206.
• Corden LD, Swensson O, Swensson B, et al. (2000). "Molecular genetics of Meesmann's corneal dystrophy: ancestral and novel mutations in keratin 12 (K12) and complete sequence of the human KRT12 gene". Exp. Eye Res. 70 (1): 41–9. doi:10.1006/exer.1999.0769. PMID 10644419.
• Takahashi K, Takahashi K, Murakami A, et al. (2002). "Heterozygous Ala137Pro mutation in keratin 12 gene found in Japanese with Meesmann's corneal dystrophy". Jpn. J. Ophthalmol. 46 (6): 673–4. doi:10.1016/S0021-5155(02)00563-4. PMID 12543196.
• Sullivan LS, Baylin EB, Font R, et al. (2007). "A novel mutation of the Keratin 12 gene responsible for a severe phenotype of Meesmann's corneal dystrophy". Mol. Vis. 13: 975–80. PMC 2774455. PMID 17653038.
• Nishida K, Honma Y, Dota A, et al. (1997). "Isolation and chromosomal localization of a cornea-specific human keratin 12 gene and detection of four mutations in Meesmann corneal epithelial dystrophy". Am. J. Hum. Genet. 61 (6): 1268–75. doi:10.1086/301650. PMC 1716060. PMID 9399908.
• Nielsen K, Orntoft T, Hjortdal J, et al. (2008). "A novel mutation as the basis for asymptomatic meesmann dystrophy in a Danish family". Cornea. 27 (1): 100–2. doi:10.1097/ICO.0b013e31815652fd. PMID 18245975. S2CID 37936499.
• Nishida K, Adachi W, Shimizu-Matsumoto A, et al. (1996). "A gene expression profile of human corneal epithelium and the isolation of human keratin 12 cDNA". Invest. Ophthalmol. Vis. Sci. 37 (9): 1800–9. PMID 8759347.
• Gevaert K, Goethals M, Martens L, et al. (2003). "Exploring proteomes and analyzing protein processing by mass spectrometric identification of sorted N-terminal peptides". Nat. Biotechnol. 21 (5): 566–9. doi:10.1038/nbt810. PMID 12665801. S2CID 23783563.
• Seto T, Fujiki K, Kishishita H, et al. (2008). "A novel mutation in the cornea-specific keratin 12 gene in Meesmann corneal dystrophy". Jpn. J. Ophthalmol. 52 (3): 224–6. doi:10.1007/s10384-007-0518-2. PMID 18661274. S2CID 189791983.
• Corden LD, Swensson O, Swensson B, et al. (2000). "A novel keratin 12 mutation in a German kindred with Meesmann's corneal dystrophy". Br J Ophthalmol. 84 (5): 527–30. doi:10.1136/bjo.84.5.527. PMC 1723457. PMID 10781519.
• Nichini O, Manzi V, Munier FL, Schorderet DF (2005). "Meesmann corneal dystrophy (MECD): report of 2 families and a novel mutation in the cornea specific keratin 12 (KRT12) gene". Ophthalmic Genet. 26 (4): 169–73. doi:10.1080/13816810500374391. PMID 16352477. S2CID 33783068.
• Chen YT, Tseng SH, Chao SC (2005). "Novel mutations in the helix termination motif of keratin 3 and keratin 12 in 2 Taiwanese families with Meesmann corneal dystrophy". Cornea. 24 (8): 928–32. doi:10.1097/01.ico.0000159732.29930.26. PMID 16227835. S2CID 1495867.