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Entry version 68 (16 Oct 2019)
Sequence version 1 (23 Oct 2007)
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Protein

Keratin, type I cytoskeletal 40

Gene

KRT40

Organism
Bos taurus (Bovine)
Status
Reviewed-Annotation score:

Annotation score:3 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 transcript 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

May play a role in late hair differentiation.By similarity

Miscellaneous

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

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>Sitei338Stutter1

<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

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

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

<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_and_taxonomy_section">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 40
Alternative name(s):
Cytokeratin-40
Short name:
CK-40
Keratin-40
Short name:
K40
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:KRT40
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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>OrganismiBos taurus (Bovine)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri9913 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaLaurasiatheriaCetartiodactylaRuminantiaPecoraBovidaeBovinaeBos
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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
  • UP000009136 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">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 19

Organism-specific databases

Vertebrate Gene Nomenclature Database

More...
VGNCi
VGNC:30733 KRT40

<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

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

<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>Keywords - Cellular componenti

Intermediate filament, Keratin

<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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003148561 – 431Keratin, type I cytoskeletal 40Add BLAST431

Proteomic databases

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

More...
PaxDbi
A7YWM2

PeptideAtlas

More...
PeptideAtlasi
A7YWM2

PRoteomics IDEntifications database

More...
PRIDEi
A7YWM2

<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_section">'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_section">'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.

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
9913.ENSBTAP00000023156

<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

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

More...
SMRi
A7YWM2

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_and_domains_section">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>Domaini89 – 400IF 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 – 89HeadAdd BLAST89
Regioni90 – 124Coil 1AAdd BLAST35
Regioni125 – 135Linker 1Add BLAST11
Regioni136 – 236Coil 1BAdd BLAST101
Regioni237 – 252Linker 12Add BLAST16
Regioni253 – 396Coil 2Add BLAST144
Regioni397 – 431TailAdd BLAST35

<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
ENOG410IFTS Eukaryota
ENOG41119VC LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000161968

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000230975

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
A7YWM2

KEGG Orthology (KO)

More...
KOi
K07604

Identification of Orthologs from Complete Genome Data

More...
OMAi
DSRLSCN

Database of Orthologous Groups

More...
OrthoDBi
798081at2759

TreeFam database of animal gene trees

More...
TreeFami
TF332742

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.20.5.1160, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR039008 IF_rod_dom
IPR042180 IF_rod_dom_coil1B
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
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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

A7YWM2-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MASDCSPTGC SSESSARASD CALASTCSVE TTCLPSACAT SSCQTPSFPS
60 70 80 90 100
GARLPTGCLP PACFAGSCNI PCVVGNCAWC EDGVFNSNEK ETMQFLNDRL
110 120 130 140 150
ASYLEKVRGL EELNAELECR IREQCEEDVP LVCPDYQCYF DTIEDLQQKI
160 170 180 190 200
LCTKAENCRL AVQLDNCKLA ADDFRSKYES ELSLRQLVET DISGLRGILG
210 220 230 240 250
ELTVCRSDLE AHVESLKDDL LCLKKSHEEE VNVLRGQLGD RLSVELDTAP
260 270 280 290 300
TTDLNRVLDE MRCQYETVLA NNRRDVEEWF AAQTEELNQQ QLSSAEQLQG
310 320 330 340 350
CQTEILELKR TANTLEIELQ AQQSLTESLE CTVAETEAQY SSELAQIQCL
360 370 380 390 400
IDNVENQLAE IRCDLERQNQ EYRVLLDTKA RLECEINTYQ GLLDSEDSRL
410 420 430
PCNPCSATSM SNDTCEPCSA YVICTVENSC P
Length:431
Mass (Da):47,820
Last modified:October 23, 2007 - 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:i2318246722DE9E91
GO

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
BC134653 mRNA Translation: AAI34654.1

NCBI Reference Sequences

More...
RefSeqi
NP_001098888.1, NM_001105418.1

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENSBTAT00000023156; ENSBTAP00000023156; ENSBTAG00000017408

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
538611

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bta:538611

<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
BC134653 mRNA Translation: AAI34654.1
RefSeqiNP_001098888.1, NM_001105418.1

3D structure databases

SMRiA7YWM2
ModBaseiSearch...

Protein-protein interaction databases

STRINGi9913.ENSBTAP00000023156

Proteomic databases

PaxDbiA7YWM2
PeptideAtlasiA7YWM2
PRIDEiA7YWM2

Genome annotation databases

EnsembliENSBTAT00000023156; ENSBTAP00000023156; ENSBTAG00000017408
GeneIDi538611
KEGGibta:538611

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
125115
VGNCiVGNC:30733 KRT40

Phylogenomic databases

eggNOGiENOG410IFTS Eukaryota
ENOG41119VC LUCA
GeneTreeiENSGT00940000161968
HOGENOMiHOG000230975
InParanoidiA7YWM2
KOiK07604
OMAiDSRLSCN
OrthoDBi798081at2759
TreeFamiTF332742

Enzyme and pathway databases

ReactomeiR-BTA-6805567 Keratinization
R-BTA-6809371 Formation of the cornified envelope

Family and domain databases

Gene3Di1.20.5.1160, 1 hit
InterProiView protein in InterPro
IPR039008 IF_rod_dom
IPR042180 IF_rod_dom_coil1B
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
PS51842 IF_ROD_2, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

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 nameiK1C40_BOVIN
<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: A7YWM2
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: October 23, 2007
Last modified: October 16, 2019
This is version 68 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

<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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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