Human Gene KRTAP20-4 (ENST00000382828.2_5) from GENCODE V48lift37
  Description: keratin associated protein 20-4 (from RefSeq NM_001350977.1)
Gencode Transcript: ENST00000382828.2_5
Gencode Gene: ENSG00000206105.2_6
Transcript (Including UTRs)
   Position: hg19 chr21:31,992,946-31,993,169 Size: 224 Total Exon Count: 1 Strand: +
Coding Region
   Position: hg19 chr21:31,992,977-31,993,111 Size: 135 Coding Exon Count: 1 

Page IndexSequence and LinksUniProtKB CommentsPrimersGene AllelesRNA-Seq Expression
Microarray ExpressionRNA StructureProtein StructureOther SpeciesGO AnnotationsmRNA Descriptions
Other NamesModel InformationMethods
Data last updated at UCSC: 2025-04-10 15:10:12

-  Sequence and Links to Tools and Databases
 
Genomic Sequence (chr21:31,992,946-31,993,169)mRNA (may differ from genome)Protein (44 aa)
Gene SorterGenome BrowserOther Species FASTAGene interactionsTable SchemaAlphaFold
BioGPSEnsemblEntrez GeneExonPrimerGeneCardsHGNC
MGIneXtProtPubMedUniProtKBBioGrid CRISPR DB

-  Comments and Description Text from UniProtKB
  ID: KR204_HUMAN
DESCRIPTION: RecName: Full=Putative keratin-associated protein 20-4;
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 (By similarity).
SUBUNIT: Interacts with hair keratins (By similarity).
SIMILARITY: Belongs to the KRTAP type 20 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


+  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: 0.44 RPKM in Testis
Total median expression: 0.44 RPKM



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

+  Microarray Expression Data
  Press "+" in the title bar above to open this section.

-  mRNA Secondary Structure of 3' and 5' UTRs
 
RegionFold EnergyBasesEnergy/Base
Display As
5' UTR 0.00310.000 Picture PostScript Text
3' UTR -11.0058-0.190 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
  ModBase Predicted Comparative 3D Structure on Q3LI62
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
  Cellular Component:
GO:0005882 intermediate filament


-  Descriptions from all associated GenBank mRNAs
  AB096956 - Homo sapiens KRTAP20-4 mRNA for keratin associated protein, complete cds.

-  Other Names for This Gene
  Alternate Gene Symbols: ENST00000382828.1, KAP20.4, KR204_HUMAN, NM_001350977, Q3LI62, uc318qzz.1, uc318qzz.2
UCSC ID: ENST00000382828.2_5
RefSeq Accession: NM_001350977.1
Protein: Q3LI62 (aka KR204_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.