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UniProtKB - P35900 (K1C20_HUMAN)

Entry version 187 (25 May 2022)
Sequence version 1 (01 Jun 1994)
Previous versions | rss
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Protein

Keratin, type I cytoskeletal 20

Gene

KRT20

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Plays a significant role in maintaining keratin filament organization in intestinal epithelia. When phosphorylated, plays a role in the secretion of mucin in the small intestine (By similarity).

By similarity2 Publications

Miscellaneous

There are two types of cytoskeletal and microfibrillar keratin: I (acidic; 40-55 kDa) and II (neutral to basic; 56-70 kDa).

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Biological processApoptosis

Enzyme and pathway databases

Pathway Commons web resource for biological pathway data

More...PathwayCommonsi		P35900

Reactome - a knowledgebase of biological pathways and processes

More...Reactomei		R-HSA-6805567, Keratinization
R-HSA-6809371, Formation of the cornified envelope

SignaLink: a signaling pathway resource with multi-layered regulatory networks

More...SignaLinki		P35900

SIGNOR Signaling Network Open Resource

More...SIGNORi		P35900

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Keratin, type I cytoskeletal 20
Alternative name(s):
Cytokeratin-20
Short name:
CK-20
Keratin-20
Short name:
K20
Protein IT
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:KRT20
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiHomo sapiens (Human)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri9606 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000005640 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 17

Organism-specific databases

Human Gene Nomenclature Database

More...HGNCi		HGNC:20412, KRT20

Online Mendelian Inheritance in Man (OMIM)

More...MIMi		608218, gene

neXtProt; the human protein knowledge platform

More...neXtProti		NX_P35900

Eukaryotic Pathogen, Vector and Host Database Resources

More...VEuPathDBi		HostDB:ENSG00000171431

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Keywords - Cellular componenti

Cytoplasm, Intermediate filament, Keratin

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology%5Fand%5Fbiotech%5Fsection">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi13S → A: Promotes keratin filament disassembly. 1 Publication1
Mutagenesisi14S → A: No effect on keratin filament organization. 1 Publication1
Mutagenesisi80R → H: Leads to collapsed filaments. 1 Publication1

Organism-specific databases

DisGeNET

More...DisGeNETi		54474

Open Targets

More...OpenTargetsi		ENSG00000171431

The Pharmacogenetics and Pharmacogenomics Knowledge Base

More...PharmGKBi		PA134938907

Miscellaneous databases

Pharos NIH Druggable Genome Knowledgebase

More...Pharosi		P35900, Tbio

Genetic variation databases

BioMuta curated single-nucleotide variation and disease association database

More...BioMutai		KRT20

Domain mapping of disease mutations (DMDM)

More...DMDMi		547750

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000636751 – 424Keratin, type I cytoskeletal 20Add BLAST424

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei13Phosphoserine; by MAPKAPK2, MAPKAPK3 and PKC1 Publication1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Hyperphosphorylation at Ser-13 occurs during the early stages of apoptosis but becomes less prominent during the later stages. Phosphorylation at Ser-13 also increases in response to stress brought on by cell injury (By similarity).By similarity
Proteolytically cleaved by caspases during apoptosis. Cleavage occurs at Asp-228.1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections ('Function', 'PTM / Processing', 'Pathology and Biotech') according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei228 – 229Cleavage; by caspases1 Publication2

Keywords - PTMi

Phosphoprotein

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P35900

MassIVE - Mass Spectrometry Interactive Virtual Environment

More...MassIVEi		P35900

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P35900

PeptideAtlas

More...PeptideAtlasi		P35900

PRoteomics IDEntifications database

More...PRIDEi		P35900

ProteomicsDB: a multi-organism proteome resource

More...ProteomicsDBi		55160

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...iPTMneti		P35900

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...PhosphoSitePlusi		P35900

SwissPalm database of S-palmitoylation events

More...SwissPalmi		P35900

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Expressed predominantly in the intestinal epithelium. Expressed in luminal cells of colonic mucosa. Also expressed in the Merkel cells of keratinized oral mucosa; specifically at the tips of some rete ridges of the gingival mucosa, in the basal layer of the palatal mucosa and in the taste buds of lingual mucosa.2 Publications

<p>This subsection of the 'Expression' section provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified 'at the protein level'.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

First detected at embryonic week 8 in individual 'converted' simple epithelial cells of the developing intestinal mucosa. In later fetal stages, synthesis extends over most goblet cells and a variable number of villus enterocytes. In the developing gastric and intestinal mucosa, expressed in all enterocytes and goblet cells as well as certain 'low-differentiated' columnar cells, whereas the neuroendocrine and Paneth cells are negative.1 Publication

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...Bgeei		ENSG00000171431, Expressed in colon and 106 other tissues

Genevisible search portal to normalized and curated expression data from Genevestigator

More...Genevisiblei		P35900, HS

Organism-specific databases

Human Protein Atlas

More...HPAi		ENSG00000171431, Tissue enriched (intestine)

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Heterotetramer of two type I and two type II keratins. Associates with KRT8.

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection">Interaction</a>' section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Hide details

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		119979, 50 interactors

Protein interaction database and analysis system

More...IntActi		P35900, 47 interactors

Molecular INTeraction database

More...MINTi		P35900

STRING: functional protein association networks

More...STRINGi		9606.ENSP00000167588

Miscellaneous databases

RNAct, Protein-RNA interaction predictions for model organisms.

More...RNActi		P35900, protein

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

AlphaFold Protein Structure Database

More...AlphaFoldDBi		P35900

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P35900

Database of comparative protein structure models

More...ModBasei		Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini70 – 381IF rodPROSITE-ProRule annotationAdd BLAST312

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni1 – 69HeadAdd BLAST69
Regioni70 – 105Coil 1AAdd BLAST36
Regioni106 – 123Linker 1Add BLAST18
Regioni124 – 215Coil 1BAdd BLAST92
Regioni216 – 238Linker 12Add BLAST23
Regioni239 – 377Coil 2Add BLAST139
Regioni378 – 424TailAdd BLAST47

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the intermediate filament family.PROSITE-ProRule annotation

Keywords - Domaini

Coiled coil

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		ENOG502QUY3, Eukaryota

Ensembl GeneTree

More...GeneTreei		ENSGT00940000161855

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_012560_8_1_1

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P35900

Identification of Orthologs from Complete Genome Data

More...OMAi		YSAYYKQ

Database of Orthologous Groups

More...OrthoDBi		798081at2759

Database for complete collections of gene phylogenies

More...PhylomeDBi		P35900

TreeFam database of animal gene trees

More...TreeFami		TF332742

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR018039, IF_conserved
IPR039008, IF_rod_dom
IPR002957, Keratin_I

The PANTHER Classification System

More...PANTHERi		PTHR23239, PTHR23239, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00038, Filament, 1 hit

Protein Motif fingerprint database; a protein domain database

More...PRINTSi		PR01248, TYPE1KERATIN

Simple Modular Architecture Research Tool; a protein domain database

More...SMARTi		View protein in SMART
SM01391, Filament, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00226, IF_ROD_1, 1 hit
PS51842, IF_ROD_2, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P35900-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MDFSRRSFHR SLSSSLQAPV VSTVGMQRLG TTPSVYGGAG GRGIRISNSR 
        60         70         80         90        100
HTVNYGSDLT GGGDLFVGNE KMAMQNLNDR LASYLEKVRT LEQSNSKLEV 
       110        120        130        140        150
QIKQWYETNA PRAGRDYSAY YRQIEELRSQ IKDAQLQNAR CVLQIDNAKL 
       160        170        180        190        200
AAEDFRLKYE TERGIRLTVE ADLQGLNKVF DDLTLHKTDL EIQIEELNKD 
       210        220        230        240        250
LALLKKEHQE EVDGLHKHLG NTVNVEVDAA PGLNLGVIMN EMRQKYEVMA 
       260        270        280        290        300
QKNLQEAKEQ FERQTAVLQQ QVTVNTEELK GTEVQLTELR RTSQSLEIEL 
       310        320        330        340        350
QSHLSMKESL EHTLEETKAR YSSQLANLQS LLSSLEAQLM QIRSNMERQN 
       360        370        380        390        400
NEYHILLDIK TRLEQEIATY RRLLEGEDVK TTEYQLSTLE ERDIKKTRKI 
       410        420 
KTVVQEVVDG KVVSSEVKEV EENI
Length:424
Mass (Da):48,487
Last modified:June 1, 1994 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iA8EF5A518C73CCE5
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti161T → S in CAA51914 (PubMed:7689500).Curated1
Sequence conflicti349Q → P in CAA51914 (PubMed:7689500).Curated1
Sequence conflicti398R → T in CAA51914 (PubMed:7689500).Curated1

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural variantiVAR_0363674S → R in a colorectal cancer sample; somatic mutation. 1 Publication1
Natural variantiVAR_024489129S → N1 PublicationCorresponds to variant dbSNP:rs7212483Ensembl.1
Natural variantiVAR_064726214G → C Found in a renal cell carcinoma sample; somatic mutation. 1 Publication1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
X73501 Genomic DNA Translation: CAA51913.1
AK312744 mRNA Translation: BAG35614.1
BC031559 mRNA Translation: AAH31559.1
X73502 mRNA Translation: CAA51914.1

The Consensus CDS (CCDS) project

More...CCDSi		CCDS11379.1

Protein sequence database of the Protein Information Resource

More...PIRi		S37780

NCBI Reference Sequences

More...RefSeqi		NP_061883.1, NM_019010.2

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...Ensembli		ENST00000167588.4; ENSP00000167588.3; ENSG00000171431.4
ENST00000576098.2; ENSP00000460501.2; ENSG00000263057.2

Database of genes from NCBI RefSeq genomes

More...GeneIDi		54474

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		hsa:54474

Matched Annotation from NCBI and EMBL-EBI (MANE) - Phase one

More...MANE-Selecti		ENST00000167588.4; ENSP00000167588.3; NM_019010.3; NP_061883.1

UCSC genome browser

More...UCSCi		uc002hvl.4, human

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X73501 Genomic DNA Translation: CAA51913.1
AK312744 mRNA Translation: BAG35614.1
BC031559 mRNA Translation: AAH31559.1
X73502 mRNA Translation: CAA51914.1
CCDSiCCDS11379.1
PIRiS37780
RefSeqiNP_061883.1, NM_019010.2

3D structure databases

AlphaFoldDBiP35900
SMRiP35900
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi119979, 50 interactors
IntActiP35900, 47 interactors
MINTiP35900
STRINGi9606.ENSP00000167588

PTM databases

iPTMnetiP35900
PhosphoSitePlusiP35900
SwissPalmiP35900

Genetic variation databases

BioMutaiKRT20
DMDMi547750

Proteomic databases

jPOSTiP35900
MassIVEiP35900
PaxDbiP35900
PeptideAtlasiP35900
PRIDEiP35900
ProteomicsDBi55160

Protocols and materials databases

Antibodypedia a portal for validated antibodies

More...Antibodypediai		3502, 1326 antibodies from 50 providers

The DNASU plasmid repository

More...DNASUi		54474

Genome annotation databases

EnsembliENST00000167588.4; ENSP00000167588.3; ENSG00000171431.4
ENST00000576098.2; ENSP00000460501.2; ENSG00000263057.2
GeneIDi54474
KEGGihsa:54474
MANE-SelectiENST00000167588.4; ENSP00000167588.3; NM_019010.3; NP_061883.1
UCSCiuc002hvl.4, human

Organism-specific databases

Comparative Toxicogenomics Database

More...CTDi		54474
DisGeNETi54474

GeneCards: human genes, protein and diseases

More...GeneCardsi		KRT20
HGNCiHGNC:20412, KRT20
HPAiENSG00000171431, Tissue enriched (intestine)
MIMi608218, gene
neXtProtiNX_P35900
OpenTargetsiENSG00000171431
PharmGKBiPA134938907
VEuPathDBiHostDB:ENSG00000171431

GenAtlas: human gene database

More...GenAtlasi		Search...

Phylogenomic databases

eggNOGiENOG502QUY3, Eukaryota
GeneTreeiENSGT00940000161855
HOGENOMiCLU_012560_8_1_1
InParanoidiP35900
OMAiYSAYYKQ
OrthoDBi798081at2759
PhylomeDBiP35900
TreeFamiTF332742

Enzyme and pathway databases

PathwayCommonsiP35900
ReactomeiR-HSA-6805567, Keratinization
R-HSA-6809371, Formation of the cornified envelope
SignaLinkiP35900
SIGNORiP35900

Miscellaneous databases

BioGRID ORCS database of CRISPR phenotype screens

More...BioGRID-ORCSi		54474, 13 hits in 1068 CRISPR screens

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

More...ChiTaRSi		KRT20, human

The Gene Wiki collection of pages on human genes and proteins

More...GeneWikii		Keratin_20

Database of phenotypes from RNA interference screens in Drosophila and Homo sapiens

More...GenomeRNAii		54474
PharosiP35900, Tbio

Protein Ontology

More...PROi		PR:P35900
RNActiP35900, protein

The Stanford Online Universal Resource for Clones and ESTs

More...SOURCEi		Search...

Gene expression databases

BgeeiENSG00000171431, Expressed in colon and 106 other tissues
GenevisibleiP35900, HS

Family and domain databases

InterProiView protein in InterPro
IPR018039, IF_conserved
IPR039008, IF_rod_dom
IPR002957, Keratin_I
PANTHERiPTHR23239, PTHR23239, 1 hit
PfamiView protein in Pfam
PF00038, Filament, 1 hit
PRINTSiPR01248, TYPE1KERATIN
SMARTiView protein in SMART
SM01391, Filament, 1 hit
PROSITEiView protein in PROSITE
PS00226, IF_ROD_1, 1 hit
PS51842, IF_ROD_2, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiK1C20_HUMAN
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P35900
Secondary accession number(s): B2R6W7
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 1, 1994
Last sequence update: June 1, 1994
Last modified: May 25, 2022
This is version 187 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Direct protein sequencing, Reference proteome

Documents

  1. Human chromosome 17
    Human chromosome 17: entries, gene names and cross-references to MIM
  2. Human entries with genetic variants
    List of human entries with genetic variants
  3. Human variants curated from literature reports
    Index of human variants curated from literature reports
  4. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  5. SIMILARITY comments
    Index of protein domains and families
UniProt is an ELIXIR core data resource
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