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Entry version 118 (16 Oct 2019)
Sequence version 2 (18 May 2010)
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Protein

Keratin-associated protein 9-4

Gene

KRTAP9-4

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

In the hair cortex, hair keratin intermediate filaments are embedded in an interfilamentous matrix, consisting of hair keratin-associated proteins (KRTAP), which are essential for the formation of a rigid and resistant hair shaft through their extensive disulfide bond cross-linking with abundant cysteine residues of hair keratins. The matrix proteins include the high-sulfur and high-glycine-tyrosine keratins.

<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 - Biological processi

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-HSA-6805567 Keratinization

<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-associated protein 9-4
Alternative name(s):
Keratin-associated protein 9.4
Ultrahigh sulfur keratin-associated protein 9.4
<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:KRTAP9-4
Synonyms:KAP9.4, KRTAP9.4
<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>OrganismiHomo sapiens (Human)
<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 identifieri9606 [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 lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
<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
  • UP000005640 <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 17

Organism-specific databases

Human Gene Nomenclature Database

More...
HGNCi
HGNC:18902 KRTAP9-4

neXtProt; the human protein knowledge platform

More...
neXtProti
NX_Q9BYQ2

<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

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

Organism-specific databases

Open Targets

More...
OpenTargetsi
ENSG00000241595

The Pharmacogenetics and Pharmacogenomics Knowledge Base

More...
PharmGKBi
PA38750

Miscellaneous databases

Pharos NIH Druggable Genome Knowledgebase

More...
Pharosi
Q9BYQ2

Polymorphism and mutation databases

BioMuta curated single-nucleotide variation and disease association database

More...
BioMutai
KRTAP9-4

Domain mapping of disease mutations (DMDM)

More...
DMDMi
296434558

<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_00001851901 – 154Keratin-associated protein 9-4Add BLAST154

Proteomic databases

MassIVE - Mass Spectrometry Interactive Virtual Environment

More...
MassIVEi
Q9BYQ2

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

More...
PaxDbi
Q9BYQ2

PeptideAtlas

More...
PeptideAtlasi
Q9BYQ2

PRoteomics IDEntifications database

More...
PRIDEi
Q9BYQ2

ProteomicsDB: a multi-organism proteome resource

More...
ProteomicsDBi
79682

<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

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...
Bgeei
ENSG00000241595 Expressed in 21 organ(s), highest expression level in upper arm skin

Genevisible search portal to normalized and curated expression data from Genevestigator

More...
Genevisiblei
Q9BYQ2 HS

<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

Interacts with hair keratins.

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">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="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
124444, 30 interactors

Protein interaction database and analysis system

More...
IntActi
Q9BYQ2, 28 interactors

STRING: functional protein association networks

More...
STRINGi
9606.ENSP00000334922

<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 ‘Family and Domains’ section indicates the positions and types of repeated sequence motifs or repeated domains within the protein.<p><a href='/help/repeat' target='_top'>More...</a></p>Repeati8 – 1215
Repeati13 – 1725
Repeati18 – 2235
Repeati37 – 4145
Repeati42 – 4655
Repeati51 – 5565
Repeati56 – 6075
Repeati61 – 6585
Repeati70 – 7495
Repeati75 – 79105
Repeati80 – 84115
Repeati85 – 89125
Repeati129 – 133135
Repeati134 – 138145
Repeati148 – 152155

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>Regioni8 – 15215 X 5 AA repeats of C-C-[RQVGE]-[SPTN]-[TASPF]Add BLAST145

<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 KRTAP type 9 family.Curated

Keywords - Domaini

Repeat

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG410JE2D Eukaryota
ENOG41118YY LUCA

Ensembl GeneTree

More...
GeneTreei
ENSGT00940000156135

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000234030

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q9BYQ2

Identification of Orthologs from Complete Genome Data

More...
OMAi
CEESCCE

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q9BYQ2

TreeFam database of animal gene trees

More...
TreeFami
TF351356

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR002494 KAP

The PANTHER Classification System

More...
PANTHERi
PTHR23262 PTHR23262, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF13885 Keratin_B2_2, 3 hits

<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.

Q9BYQ2-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTHCCSPCCQ PTCCRTTCCR TTCWKPTTVT TCSSTPCCQP SCCVSSCCQP
60 70 80 90 100
CCRPTCCQNT CCQPTCVTSC CQPSCCSTPC CQPTCCGSSC DQSSSCAPVY
110 120 130 140 150
CRRTCYYPTT VCLPGCLNQS CGSNCCQPCC RPACCETTCF QPTCVSSCCQ

PFCC
Length:154
Mass (Da):16,378
Last modified:May 18, 2010 - v2
<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:i260D862E16165105
GO

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_060242146S → Y2 PublicationsCorresponds to variant dbSNP:rs2191379Ensembl.1

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
AJ406948 mRNA Translation: CAC27587.1
AC006070 Genomic DNA No translation available.
BC121094 mRNA Translation: AAI21095.1

The Consensus CDS (CCDS) project

More...
CCDSi
CCDS11386.1

NCBI Reference Sequences

More...
RefSeqi
NP_149461.2, NM_033191.2

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENST00000334109; ENSP00000334922; ENSG00000241595
ENST00000570861; ENSP00000461634; ENSG00000262896
ENST00000575341; ENSP00000461584; ENSG00000262512

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
85280

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
hsa:85280

UCSC genome browser

More...
UCSCi
uc002hwi.3 human

Keywords - Coding sequence diversityi

Polymorphism

<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
AJ406948 mRNA Translation: CAC27587.1
AC006070 Genomic DNA No translation available.
BC121094 mRNA Translation: AAI21095.1
CCDSiCCDS11386.1
RefSeqiNP_149461.2, NM_033191.2

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein-protein interaction databases

BioGridi124444, 30 interactors
IntActiQ9BYQ2, 28 interactors
STRINGi9606.ENSP00000334922

Polymorphism and mutation databases

BioMutaiKRTAP9-4
DMDMi296434558

Proteomic databases

MassIVEiQ9BYQ2
PaxDbiQ9BYQ2
PeptideAtlasiQ9BYQ2
PRIDEiQ9BYQ2
ProteomicsDBi79682

Genome annotation databases

EnsembliENST00000334109; ENSP00000334922; ENSG00000241595
ENST00000570861; ENSP00000461634; ENSG00000262896
ENST00000575341; ENSP00000461584; ENSG00000262512
GeneIDi85280
KEGGihsa:85280
UCSCiuc002hwi.3 human

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
85280

GeneCards: human genes, protein and diseases

More...
GeneCardsi
KRTAP9-4
HGNCiHGNC:18902 KRTAP9-4
neXtProtiNX_Q9BYQ2
OpenTargetsiENSG00000241595
PharmGKBiPA38750

GenAtlas: human gene database

More...
GenAtlasi
Search...

Phylogenomic databases

eggNOGiENOG410JE2D Eukaryota
ENOG41118YY LUCA
GeneTreeiENSGT00940000156135
HOGENOMiHOG000234030
InParanoidiQ9BYQ2
OMAiCEESCCE
PhylomeDBiQ9BYQ2
TreeFamiTF351356

Enzyme and pathway databases

ReactomeiR-HSA-6805567 Keratinization

Miscellaneous databases

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

More...
GenomeRNAii
85280
PharosiQ9BYQ2

Protein Ontology

More...
PROi
PR:Q9BYQ2

Gene expression databases

BgeeiENSG00000241595 Expressed in 21 organ(s), highest expression level in upper arm skin
GenevisibleiQ9BYQ2 HS

Family and domain databases

InterProiView protein in InterPro
IPR002494 KAP
PANTHERiPTHR23262 PTHR23262, 1 hit
PfamiView protein in Pfam
PF13885 Keratin_B2_2, 3 hits

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 nameiKRA94_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: Q9BYQ2
Secondary accession number(s): Q0VAE3
<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: November 14, 2003
Last sequence update: May 18, 2010
Last modified: October 16, 2019
This is version 118 of the entry and version 2 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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  3. Human chromosome 17
    Human chromosome 17: entries, gene names and cross-references to MIM
  4. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
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