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Protein

Keratin-associated protein 9-4

Gene

KRTAP9-4

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

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.

GO - Biological processi

Enzyme and pathway databases

ReactomeiR-HSA-6805567 Keratinization

Names & Taxonomyi

Protein namesi
Recommended name:
Keratin-associated protein 9-4
Alternative name(s):
Keratin-associated protein 9.4
Ultrahigh sulfur keratin-associated protein 9.4
Gene namesi
Name:KRTAP9-4
Synonyms:KAP9.4, KRTAP9.4
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 17

Organism-specific databases

EuPathDBiHostDB:ENSG00000241595.2
HGNCiHGNC:18902 KRTAP9-4
neXtProtiNX_Q9BYQ2

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; Source: COMPARTMENTS

Keywords - Cellular componenti

Keratin

Pathology & Biotechi

Organism-specific databases

OpenTargetsiENSG00000241595
PharmGKBiPA38750

Polymorphism and mutation databases

BioMutaiKRTAP9-4
DMDMi296434558

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001851901 – 154Keratin-associated protein 9-4Add BLAST154

Proteomic databases

PaxDbiQ9BYQ2
PeptideAtlasiQ9BYQ2
PRIDEiQ9BYQ2

Expressioni

Gene expression databases

BgeeiENSG00000241595
CleanExiHS_KRTAP9-4
GenevisibleiQ9BYQ2 HS

Interactioni

Subunit structurei

Interacts with hair keratins.

Binary interactionsi

Show more details

Protein-protein interaction databases

BioGridi124444, 30 interactors
IntActiQ9BYQ2, 28 interactors
STRINGi9606.ENSP00000334922

Structurei

3D structure databases

ProteinModelPortaliQ9BYQ2
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
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
Regioni8 – 15215 X 5 AA repeats of C-C-[RQVGE]-[SPTN]-[TASPF]Add BLAST145

Sequence similaritiesi

Belongs to the KRTAP type 9 family.Curated

Keywords - Domaini

Repeat

Phylogenomic databases

eggNOGiENOG410JE2D Eukaryota
ENOG41118YY LUCA
GeneTreeiENSGT00890000139484
HOGENOMiHOG000234030
HOVERGENiHBG096080
InParanoidiQ9BYQ2
OMAiCNTEAGA
PhylomeDBiQ9BYQ2
TreeFamiTF351356

Family and domain databases

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

Sequencei

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
Checksum:i260D862E16165105
GO

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural variantiVAR_060242146S → Y2 PublicationsCorresponds to variant dbSNP:rs2191379Ensembl.1

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
UniGeneiHs.528700

Genome annotation databases

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

Keywords - Coding sequence diversityi

Polymorphism

Similar proteinsi

Entry informationi

Entry nameiKRA94_HUMAN
AccessioniPrimary (citable) accession number: Q9BYQ2
Secondary accession number(s): Q0VAE3
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 14, 2003
Last sequence update: May 18, 2010
Last modified: March 28, 2018
This is version 110 of the entry and version 2 of the sequence. See complete history.
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.

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

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

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