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Protein

Keratin-associated protein 9-2

Gene

KRTAP9-2

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-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 - Molecular functioni

  • identical protein binding Source: IntAct

GO - Biological processi

Enzyme and pathway databases

ReactomeiR-HSA-6805567. Keratinization.

Names & Taxonomyi

Protein namesi
Recommended name:
Keratin-associated protein 9-2
Alternative name(s):
Keratin-associated protein 9.2
Ultrahigh sulfur keratin-associated protein 9.2
Gene namesi
Name:KRTAP9-2
Synonyms:KAP9.2, KRTAP9.2
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 17

Organism-specific databases

HGNCiHGNC:16926. KRTAP9-2.

Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Keratin

Pathology & Biotechi

Organism-specific databases

PharmGKBiPA38424.

Polymorphism and mutation databases

BioMutaiKRTAP9-2.
DMDMi209572642.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001851881 – 174Keratin-associated protein 9-2Add BLAST174

Proteomic databases

PaxDbiQ9BYQ4.
PeptideAtlasiQ9BYQ4.
PRIDEiQ9BYQ4.

PTM databases

iPTMnetiQ9BYQ4.
PhosphoSitePlusiQ9BYQ4.

Expressioni

Gene expression databases

CleanExiHS_KRTAP9-2.
GenevisibleiQ9BYQ4. HS.

Interactioni

Subunit structurei

Interacts with hair keratins.

Binary interactionsi

WithEntry#Exp.IntActNotes
itself3EBI-1044640,EBI-1044640
G2XKQ03EBI-1044640,EBI-10175576
ADAM12O43184-44EBI-1044640,EBI-12006944
ADAMTSL4Q6UY14-35EBI-1044640,EBI-10173507
AQP1P299723EBI-1044640,EBI-745213
ARFGAP1Q8N6T33EBI-1044640,EBI-716933
CATSPER1Q8NEC59EBI-1044640,EBI-744545
CCDC28AQ8IWP93EBI-1044640,EBI-355471
CHRDQ9H2X03EBI-1044640,EBI-947551
COL8A1P276583EBI-1044640,EBI-747133
CREB5Q02930-39EBI-1044640,EBI-10192698
DOCK2Q926083EBI-1044640,EBI-448771
FAM76BQ5HYJ33EBI-1044640,EBI-751192
GATA1P159763EBI-1044640,EBI-3909284
GLRX3O760035EBI-1044640,EBI-374781
GNEQ9Y2233EBI-1044640,EBI-4291090
HOXA1P496399EBI-1044640,EBI-740785
JOSD1Q150405EBI-1044640,EBI-2510602
KRTAP10-11P604125EBI-1044640,EBI-10217483
KRTAP10-5P603705EBI-1044640,EBI-10172150
KRTAP10-7P604093EBI-1044640,EBI-10172290
KRTAP10-8P604107EBI-1044640,EBI-10171774
KRTAP10-9P604116EBI-1044640,EBI-10172052
KRTAP26-1Q6PEX35EBI-1044640,EBI-3957672
KRTAP3-2Q9BYR73EBI-1044640,EBI-751260
KRTAP4-11Q9BYQ64EBI-1044640,EBI-10302392
KRTAP4-12Q9BQ665EBI-1044640,EBI-739863
KRTAP4-2Q9BYR57EBI-1044640,EBI-10172511
KRTAP4-7Q9BYR03EBI-1044640,EBI-10302547
KRTAP5-11Q6L8G44EBI-1044640,EBI-11993296
KRTAP5-2Q701N44EBI-1044640,EBI-11958178
KRTAP5-6Q6L8G95EBI-1044640,EBI-10250562
KRTAP5-9P263715EBI-1044640,EBI-3958099
KRTAP9-3Q9BYQ34EBI-1044640,EBI-1043191
KRTAP9-4Q9BYQ23EBI-1044640,EBI-10185730
LCE1BQ5T7P37EBI-1044640,EBI-10245913
LCE1DQ5T7524EBI-1044640,EBI-11741311
LCE1EQ5T7534EBI-1044640,EBI-11955335
LCE2AQ5TA795EBI-1044640,EBI-10246607
LCE2CQ5TA814EBI-1044640,EBI-11973993
LCE3AQ5TA764EBI-1044640,EBI-9394625
LCE3BQ5TA774EBI-1044640,EBI-11974495
LCE3DQ9BYE34EBI-1044640,EBI-6658837
LCE3EQ5T5B05EBI-1044640,EBI-10245456
LCE4AQ5TA785EBI-1044640,EBI-10246358
LNX1Q8TBB13EBI-1044640,EBI-739832
MAPKBP1O603363EBI-1044640,EBI-947402
MEOX2A4D1275EBI-1044640,EBI-10172134
NOTCH2NLQ7Z3S95EBI-1044640,EBI-945833
NUFIP2A1L3A73EBI-1044640,EBI-10172018
NUFIP2Q7Z4174EBI-1044640,EBI-1210753
OTX1P322427EBI-1044640,EBI-740446
PDE9AO760833EBI-1044640,EBI-742764
PLSCR1O151623EBI-1044640,EBI-740019
PRKAB2O437417EBI-1044640,EBI-1053424
PTPMT1Q8WUK05EBI-1044640,EBI-7199479
RCHY1Q96PM53EBI-1044640,EBI-947779
RNF31Q96EP0-33EBI-1044640,EBI-10225152
RYDENQ9NUL53EBI-1044640,EBI-10313866
SMCPP499017EBI-1044640,EBI-750494
SPATA8Q6RVD63EBI-1044640,EBI-8635958
SPRY2O435973EBI-1044640,EBI-742487
TMSB10P633133EBI-1044640,EBI-2688673
VGLL3A8MV65-24EBI-1044640,EBI-11957216
WDYHV1Q96HA85EBI-1044640,EBI-741158

GO - Molecular functioni

  • identical protein binding Source: IntAct

Protein-protein interaction databases

BioGridi123810. 57 interactors.
IntActiQ9BYQ4. 128 interactors.
STRINGi9606.ENSP00000366950.

Structurei

3D structure databases

ProteinModelPortaliQ9BYQ4.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Repeati8 – 1215
Repeati13 – 1725
Repeati18 – 2235
Repeati37 – 4145
Repeati42 – 4655
Repeati51 – 5565
Repeati61 – 6575
Repeati66 – 7085
Repeati75 – 7995
Repeati80 – 84105
Repeati85 – 89115
Repeati90 – 94125
Repeati95 – 99135
Repeati144 – 148145
Repeati149 – 153155
Repeati154 – 158165
Repeati168 – 172175

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni8 – 17217 X 5 AA repeats of C-C-[RQVSGE]-[SPTQ]-[TASP]Add BLAST165

Sequence similaritiesi

Belongs to the KRTAP type 9 family.Curated

Keywords - Domaini

Repeat

Phylogenomic databases

eggNOGiENOG410JE2D. Eukaryota.
ENOG41118YY. LUCA.
GeneTreeiENSGT00880000137902.
HOGENOMiHOG000234030.
InParanoidiQ9BYQ4.
OMAiCCHSACC.
PhylomeDBiQ9BYQ4.
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.

Q9BYQ4-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTHCCSPCCQ PTCCRTTCCR TTCWKPTTVT TCSSTPCCQP ACCVSSCCQP
60 70 80 90 100
CCRPTCCQNT CCRTTCCQPT CVTSCCQPSC CSTPCCQPTC CGSSCCGQTS
110 120 130 140 150
CGSSCGQSSS CAPVYCRRTC YYPTTVCLPG CLNQSCGSNC CQPCCRPACC
160 170
ETTCCRTTCF QPTCVSSCCQ PSCC
Length:174
Mass (Da):18,287
Last modified:October 14, 2008 - v2
Checksum:i8E5A1D598966FE3C
GO

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Natural variantiVAR_04670236P → S2 PublicationsCorresponds to variant dbSNP:rs9903833Ensembl.1
Natural variantiVAR_04670356C → S2 PublicationsCorresponds to variant dbSNP:rs9902235Ensembl.1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AJ406946 mRNA. Translation: CAC27585.1.
CH471152 Genomic DNA. Translation: EAW60718.1.
BC069560 mRNA. Translation: AAH69560.1.
BC110619 mRNA. Translation: AAI10620.1.
BC117287 mRNA. Translation: AAI17288.1.
CCDSiCCDS32651.1.
RefSeqiNP_114167.2. NM_031961.2.
UniGeneiHs.307013.

Genome annotation databases

EnsembliENST00000377721; ENSP00000366950; ENSG00000239886.
ENST00000572513; ENSP00000458594; ENSG00000263090.
GeneIDi83899.
KEGGihsa:83899.
UCSCiuc002hwf.3. human.

Keywords - Coding sequence diversityi

Polymorphism

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.

Entry informationi

Entry nameiKRA92_HUMAN
AccessioniPrimary (citable) accession number: Q9BYQ4
Secondary accession number(s): Q17RK8, Q2TB15, Q6ISF6
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 14, 2003
Last sequence update: October 14, 2008
Last modified: June 7, 2017
This is version 114 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