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UniProtKB/Swiss-Prot entry P02538


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name K2C6A_HUMAN
Primary accession number P02538
Secondary accession numbers A4QPC1 P48667 Q08AR4 Q6NT67 Q96CL4
Integrated into Swiss-Prot on July 21, 1986
Sequence was last modified on January 23, 2007 (Sequence version 3)
Annotations were last modified on    May 5, 2009 (Entry version 102)
Name and origin of the protein
Protein name Keratin, type II cytoskeletal 6A
Synonyms Cytokeratin-6A
CK 6A
K6a keratin
Cytokeratin-6D
CK 6D
Allergen Hom s 5
Gene name
Name: KRT6A
Synonyms: K6A, KRT6D
From
Homo sapiens (Human) [TaxID: 9606] 
Taxonomy Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.
Protein existence 1: Evidence at protein level;
References
[1]
NUCLEOTIDE SEQUENCE [GENOMIC DNA].
TISSUE=Skin;
DOI=10.1074/jbc.270.31.18581; PubMed=7543104 [NCBI, ExPASy, EBI, Israel, Japan]
Takahashi K., Paladini R.D., Coulombe P.A.;
"Cloning and characterization of multiple human genes and cDNAs encoding highly related type II keratin 6 isoforms.";
J. Biol. Chem. 270:18581-18592(1995).
[2]
NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
Kalnine N., Chen X., Rolfs A., Halleck A., Hines L., Eisenstein S., Koundinya M., Raphael J., Moreira D., Kelley T., LaBaer J., Lin Y., Phelan M., Farmer A.;
"Cloning of human full-length CDSs in BD Creator(TM) system donor vector.";
Submitted (MAY-2003) to the EMBL/GenBank/DDBJ databases.
[3]
NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA], AND VARIANT SER-21.
TISSUE=Brain, Ovary, and Pancreas;
DOI=10.1101/gr.2596504; PubMed=15489334 [NCBI, ExPASy, EBI, Israel, Japan]
The MGC Project Team;
"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).";
Genome Res. 14:2121-2127(2004).
[4]
PROTEIN SEQUENCE OF 2-9; 31-40; 43-86; 169-204; 208-232; 241-347; 350-369; 379-386; 425-436; 447-475 AND 534-550, CLEAVAGE OF INITIATOR METHIONINE, ACETYLATION AT ALA-2, AND MASS SPECTROMETRY.
TISSUE=Lung carcinoma;
Bienvenut W.V., Vousden K.H., Lukashchuk N., Lilla S., Lange E., Sumpton D.P.;
Submitted (MAR-2008) to UniProtKB.
[5]
NUCLEOTIDE SEQUENCE [MRNA] OF 208-564.
DOI=10.1016/0092-8674(83)90034-X; PubMed=6191871 [NCBI, ExPASy, EBI, Israel, Japan]
Hanukoglu I., Fuchs E.;
"The cDNA sequence of a type II cytoskeletal keratin reveals constant and variable structural domains among keratins.";
Cell 33:915-924(1983).
[6]
INTERACTION WITH TCHP.
DOI=10.1242/jcs.01667; PubMed=15731013 [NCBI, ExPASy, EBI, Israel, Japan]
Nishizawa M., Izawa I., Inoko A., Hayashi Y., Nagata K., Yokoyama T., Usukura J., Inagaki M.;
"Identification of trichoplein, a novel keratin filament-binding protein.";
J. Cell Sci. 118:1081-1090(2005).
[7]
IDENTIFICATION [LARGE SCALE ANALYSIS], AND MASS SPECTROMETRY.
Colinge J., Superti-Furga G., Bennett K.L.;
Submitted (OCT-2008) to UniProtKB.
[8]
VARIANT PC1 ASN-171 DEL.
DOI=10.1038/ng0795-363; PubMed=7545493 [NCBI, ExPASy, EBI, Israel, Japan]
Bowden P.E., Haley J.L., Kansky A., Rothnagel J.A., Jones D.O., Turner R.J.;
"Mutation of a type II keratin gene (K6a) in pachyonychia congenita.";
Nat. Genet. 10:363-365(1995).
[9]
VARIANTS PC1 VAL-174; ARG-469 AND LYS-472.
DOI=10.1046/j.0022-202x.2001.01565.x; PubMed=11886499 [NCBI, ExPASy, EBI, Israel, Japan]
Terrinoni A., Smith F.J.D., Didona B., Canzona F., Paradisi M., Huber M., Hohl D., David A., Verloes A., Leigh I.M., Munro C.S., Melino G., McLean W.H.I.;
"Novel and recurrent mutations in the genes encoding keratins K6a, K16 and K17 in 13 cases of pachyonychia congenita.";
J. Invest. Dermatol. 117:1391-1396(2001).
Comments
  • SUBUNIT: Heterodimer of a type I and a type II keratin. KRT6 isomers associate with KRT16 and/or KRT17. Interacts with TCHP.
  • INTERACTION:
    Q15834:CCDC85B; NbExp=1; IntAct=EBI-702198, EBI-739674;
  • TISSUE SPECIFICITY: Constitutively expressed in distinct types of epithelia such as those in oral mucosa, esophagus, papillae of tongue and hair follicle outer root sheath.
  • DISEASE: Defects in KRT6A are a cause of pachyonychia congenita type 1 (PC1) [MIM:167200]; also known as Jadassohn-Lewandowsky syndrome. PC1 is an autosomal dominant ectodermal dysplasia characterized by hypertrophic nail dystrophy resulting in onchyogryposis (thickening and increase in curvature of the nail), palmoplantar keratoderma, follicular hyperkeratosis, and oral leukokeratosis. Hyperhidrosis of the hands and feet is usually present.
  • ALLERGEN: Causes an allergic reaction in human. Binds to IgE from atopic dermatitis (AD) patients. Identified as an IgE autoantigen in atopic dermatitis (AD) patients with severe skin manifestations.
  • MISCELLANEOUS: There are at least six isoforms of human type II keratin-6 (K6), K6A being the most abundant representing about 77% of all forms found in epithelia.
  • MISCELLANEOUS: There are two types of cytoskeletal and microfibrillar keratin, I (acidic) and II (neutral to basic) (40-55 and 56-70 kDa, respectively).
  • SIMILARITY: Belongs to the intermediate filament family.
  • WEB RESOURCE: Name=Human Intermediate Filament Mutation Database; URL="http://www.interfil.org";.
  • WEB RESOURCE: Name=GeneReviews; URL="http://www.genetests.org/query?gene=KRT6A";.
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
L42583; AAC41767.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42575; AAC41767.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42576; AAC41767.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42577; AAC41767.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42578; AAC41767.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42579; AAC41767.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42580; AAC41767.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42581; AAC41767.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42610; AAB60696.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42603; AAB60696.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42604; AAB60696.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42605; AAB60696.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42606; AAB60696.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42607; AAB60696.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42608; AAB60696.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
L42609; AAB60696.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
BT006899; AAP35545.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
BC008807; AAH08807.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
BC014152; AAH14152.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
BC069269; AAH69269.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
BC125058; AAI25059.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
BC139753; AAI39754.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
V01516; CAA24760.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
IPI IPI00300725; -.
PIR A57398; KRHUEA.
I61769; I61769.
RefSeq NP_005545.1; -.
UniGene Hs.700779
3D structure databases
HSSP P08670; 1GK7. [HSSP ENTRY / PDB]
ModBase P02538.
Protein-protein interaction databases
DIP DIP:533N; -.
IntAct P02538; 8.
PTM databases
PhosphoSite P02538; -.
Organism-specific databases
GeneCards GC12M051176; -.
H-InvDB HIX0010654; -.
HGNC HGNC:6443; KRT6A.
GenAtlas KRT6A.
MIM 148041; gene. [NCBI / EBI]
167200; phenotype. [NCBI / EBI]
Orphanet 2309; Pachyonychia congenita.
PharmGKB PA30231; -.
Gene expression databases
ArrayExpress P02538; -.
Bgee P02538; -.
CleanEx HS_KRT6A; -.
GermOnline ENSG00000205420; Homo sapiens.
Ontologies
GO
GO:0045095; Cellular component: keratin filament (inferred from electronic annotation from InterPro).
GO:0005515; Molecular function: protein binding (inferred from physical interaction from IntAct).
GO:0005200; Molecular function: structural constituent of cytoskeleton (non-traceable author statement from UniProtKB).
GO:0030154; Biological process: cell differentiation (non-traceable author statement from UniProtKB).
GO:0007398; Biological process: ectoderm development (traceable author statement from ProtInc).
GO:0008284; Biological process: positive regulation of cell proliferation (non-traceable author statement from UniProtKB).
QuickGo view.
Family and domain databases
InterPro IPR016044; F.
IPR001664; IF.
IPR018039; Intermediate_filament_CS.
IPR003054; Keratin_II.
Graphical view of domain structure.
PANTHER PTHR23239; IF; 1.
PTHR23239:SF18; Keratin_II; 1.
Pfam PF00038; Filament; 1.
Pfam graphical view of domain structure.
PRINTS PR01276; TYPE2KERATIN.
PROSITE PS00226; IF; 1.
Proteomic databases
PeptideAtlas P02538; -.
PRIDE P02538; -.
Genome annotation databases
Ensembl ENSG00000205420; Homo sapiens. [Contig view]
GeneID 3853; -.
KEGG hsa:3853; -.
Phylogenomic databases
HOGENOM P02538; -.
HOVERGEN P02538; -.
OMA P02538; QEITEIN.
Other
NextBio 15161; -.
SOURCE KRT6A; Homo sapiens.
ProtoNet P02538.
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
Acetylation; Allergen; Coiled coil; Direct protein sequencing; Disease mutation; Ectodermal dysplasia; Intermediate filament; Keratin; Palmoplantar keratoderma; Phosphoprotein; Polymorphism.
Features
SEVIEWER logo Feature table viewer FT aligner logo Feature aligner
KeyFrom   To Length Description FTId
INIT_MET   1     1        Removed. 
CHAIN   2   564  563     Keratin, type II cytoskeletal 6A. PRO_0000063731
REGION   2   162  161     Head. 
REGION   163   472  310     Rod. 
REGION   163   198  36     Coil 1A. 
REGION   199   217  19     Linker 1. 
REGION   218   309  92     Coil 1B. 
REGION   310   333  24     Linker 12. 
REGION   334   472  139     Coil 2. 
REGION   473   564  92     Tail. 
SITE   414   414  1     Stutter. 
MOD_RES   2     2        N-acetylalanine. 
MOD_RES   60    60        Phosphoserine (By similarity). 
VARIANT   21    21  1     N -> S (in dbSNP:rs17845411 [NCBI]). VAR_021264 
VARIANT   111   111  1     G -> D (in dbSNP:rs681063 [NCBI]). VAR_035030 
VARIANT   171   171  1     Missing (in PC1). VAR_003878
VARIANT   174   174  1     F -> V (in PC1; dbSNP:rs28933087 [NCBI]). VAR_017075 
VARIANT   469   469  1     L -> R (in PC1). VAR_017076 
VARIANT   472   472  1     E -> K (in PC1). VAR_017077 
CONFLICT   192   192        E -> D (in Ref. 1; AAB60696). 
CONFLICT   241   241        G -> N (in Ref. 1; AAB60696). 
CONFLICT   249   249        F -> L (in Ref. 1; AAB60696). 
CONFLICT   395   395        I -> S (in Ref. 5; CAA24760). 
CONFLICT   404   404        N -> S (in Ref. 1; AAB60696). 
CONFLICT   443   443        R -> W (in Ref. 3; AAH69269). 
CONFLICT   486   486        I -> V (in Ref. 1; AAB60696). 
Sequence information
Length: 564 AA [This is the length of the unprocessed precursor] Molecular weight: 60045 Da [This is the MW of the unprocessed precursor] CRC64: 26708916C7DC923A [This is a checksum on the sequence]
        10         20         30         40         50         60 
MASTSTTIRS HSSSRRGFSA NSARLPGVSR SGFSSVSVSR SRGSGGLGGA CGGAGFGSRS 

        70         80         90        100        110        120 
LYGLGGSKRI SIGGGSCAIS GGYGSRAGGS YGFGGAGSGF GFGGGAGIGF GLGGGAGLAG 

       130        140        150        160        170        180 
GFGGPGFPVC PPGGIQEVTV NQSLLTPLNL QIDPTIQRVR AEEREQIKTL NNKFASFIDK 

       190        200        210        220        230        240 
VRFLEQQNKV LETKWTLLQE QGTKTVRQNL EPLFEQYINN LRRQLDSIVG ERGRLDSELR 

       250        260        270        280        290        300 
GMQDLVEDFK NKYEDEINKR TAAENEFVTL KKDVDAAYMN KVELQAKADT LTDEINFLRA 

       310        320        330        340        350        360 
LYDAELSQMQ THISDTSVVL SMDNNRNLDL DSIIAEVKAQ YEEIAQRSRA EAESWYQTKY 

       370        380        390        400        410        420 
EELQVTAGRH GDDLRNTKQE IAEINRMIQR LRSEIDHVKK QCANLQAAIA DAEQRGEMAL 

       430        440        450        460        470        480 
KDAKNKLEGL EDALQKAKQD LARLLKEYQE LMNVKLALDV EIATYRKLLE GEECRLNGEG 

       490        500        510        520        530        540 
VGQVNISVVQ STVSSGYGGA SGVGSGLGLG GGSSYSYGSG LGVGGGFSSS SGRAIGGGLS 

       550        560 
SVGGGSSTIK YTTTSSSSRK SYKH 

P02538 in FASTA format

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