Human Gene KRTAP4-3 (ENST00000391356.4_6) from GENCODE V47lift37
  Description: keratin associated protein 4-3 (from RefSeq NM_033187.2)
Gencode Transcript: ENST00000391356.4_6
Gencode Gene: ENSG00000196156.5_8
Transcript (Including UTRs)
   Position: hg19 chr17:39,323,483-39,324,473 Size: 991 Total Exon Count: 1 Strand: -
Coding Region
   Position: hg19 chr17:39,323,837-39,324,424 Size: 588 Coding Exon Count: 1 

Page IndexSequence and LinksUniProtKB CommentsPrimersCTDGene Alleles
RNA-Seq ExpressionRNA StructureProtein StructureOther SpeciesGO AnnotationsmRNA Descriptions
PathwaysOther NamesModel InformationMethods
Data last updated at UCSC: 2024-08-22 23:36:26

-  Sequence and Links to Tools and Databases
 
Genomic Sequence (chr17:39,323,483-39,324,473)mRNA (may differ from genome)Protein (195 aa)
Gene SorterGenome BrowserOther Species FASTAGene interactionsTable SchemaAlphaFold
BioGPSEnsemblEntrez GeneExonPrimerGeneCardsHGNC
MGIPubMedReactomeUniProtKBBioGrid CRISPR DB

-  Comments and Description Text from UniProtKB
  ID: KRA43_HUMAN
DESCRIPTION: RecName: Full=Keratin-associated protein 4-3; AltName: Full=Keratin-associated protein 4.3; AltName: Full=Ultrahigh sulfur keratin-associated protein 4.3;
FUNCTION: 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.
SUBUNIT: Interacts with hair keratins.
TISSUE SPECIFICITY: Expressed specifically in the middle/uper portions of the hair cortex. Not detected in the hair matrix or cuticle.
POLYMORPHISM: Numerous size polymorphism are present in KRTAP4 gene family, which are mainly due to variations in the sequence encoding cysteine-rich repeat segments.
SIMILARITY: Belongs to the KRTAP type 4 family.

-  Primer design for this transcript
 

Primer3Plus can design qPCR Primers that straddle exon-exon-junctions, which amplify only cDNA, not genomic DNA.
Click here to load the transcript sequence and exon structure into Primer3Plus

Exonprimer can design one pair of Sanger sequencing primers around every exon, located in non-genic sequence.
Click here to open Exonprimer with this transcript

To design primers for a non-coding sequence, zoom to a region of interest and select from the drop-down menu: View > In External Tools > Primer3


-  Comparative Toxicogenomics Database (CTD)
  The following chemicals interact with this gene

+  Common Gene Haplotype Alleles
  Press "+" in the title bar above to open this section.

-  RNA-Seq Expression Data from GTEx (53 Tissues, 570 Donors)
  Highest median expression: 0.00 RPKM in (null)
Total median expression: 0.00 RPKM



View in GTEx track of Genome Browser    View at GTEx portal     View GTEx Body Map

-  mRNA Secondary Structure of 3' and 5' UTRs
 
RegionFold EnergyBasesEnergy/Base
Display As
5' UTR -8.0049-0.163 Picture PostScript Text
3' UTR -66.40354-0.188 Picture PostScript Text

The RNAfold program from the Vienna RNA Package is used to perform the secondary structure predictions and folding calculations. The estimated folding energy is in kcal/mol. The more negative the energy, the more secondary structure the RNA is likely to have.

-  Protein Domain and Structure Information
  InterPro Domains: Graphical view of domain structure
IPR002494 - Keratin-assoc

Pfam Domains:
PF01500 - Keratin, high sulfur B2 protein
PF13885 - Keratin, high sulfur B2 protein

ModBase Predicted Comparative 3D Structure on Q9BYR4
FrontTopSide
The pictures above may be empty if there is no ModBase structure for the protein. The ModBase structure frequently covers just a fragment of the protein. You may be asked to log onto ModBase the first time you click on the pictures. It is simplest after logging in to just click on the picture again to get to the specific info on that model.

-  Orthologous Genes in Other Species
  Orthologies between human, mouse, and rat are computed by taking the best BLASTP hit, and filtering out non-syntenic hits. For more distant species reciprocal-best BLASTP hits are used. Note that the absence of an ortholog in the table below may reflect incomplete annotations in the other species rather than a true absence of the orthologous gene.
MouseRatZebrafishD. melanogasterC. elegansS. cerevisiae
No orthologNo orthologNo orthologNo orthologNo orthologNo ortholog
      
      
      
      
      

-  Gene Ontology (GO) Annotations with Structured Vocabulary
  Biological Process:
GO:0007568 aging
GO:0031424 keratinization
GO:0042633 hair cycle

Cellular Component:
GO:0005829 cytosol
GO:0005882 intermediate filament
GO:0045095 keratin filament


-  Descriptions from all associated GenBank mRNAs
  AJ406935 - Homo sapiens partial mRNA for keratin associated protein 4.3 (KRTAP4.3 gene).

-  Biochemical and Signaling Pathways
  Reactome (by CSHL, EBI, and GO)

Protein Q9BYR4 (Reactome details) participates in the following event(s):

R-HSA-6805567 Keratinization
R-HSA-1266738 Developmental Biology

-  Other Names for This Gene
  Alternate Gene Symbols: ENST00000391356.1, ENST00000391356.2, ENST00000391356.3, KAP4.3, KRA43_HUMAN, KRTAP4.3, NM_033187, Q9BYR4, uc318ulw.1, uc318ulw.2
UCSC ID: ENST00000391356.4_6
RefSeq Accession: NM_033187.2
Protein: Q9BYR4 (aka KRA43_HUMAN or KR43_HUMAN)

-  Gene Model Information
  Click here for a detailed description of the fields of the table above.

-  Methods, Credits, and Use Restrictions
  Click here for details on how this gene model was made and data restrictions if any.