Human Gene KRT73 (ENST00000305748.7) from GENCODE V44
  Description: Homo sapiens keratin 73 (KRT73), mRNA. (from RefSeq NM_175068)
RefSeq Summary (NM_175068): Keratins are intermediate filament proteins responsible for the structural integrity of epithelial cells and are subdivided into epithelial keratins and hair keratins. This gene encodes a protein that is expressed in the inner root sheath of hair follicles. The type II keratins are clustered in a region of chromosome 12q13.[provided by RefSeq, Jun 2009].
Gencode Transcript: ENST00000305748.7
Gencode Gene: ENSG00000186049.8
Transcript (Including UTRs)
   Position: hg38 chr12:52,607,570-52,618,559 Size: 10,990 Total Exon Count: 9 Strand: -
Coding Region
   Position: hg38 chr12:52,608,196-52,618,524 Size: 10,329 Coding Exon Count: 9 

Page IndexSequence and LinksUniProtKB CommentsPrimersCTDRNA-Seq Expression
Microarray ExpressionRNA StructureProtein StructureOther SpeciesGO AnnotationsmRNA Descriptions
PathwaysOther NamesMethods
Data last updated at UCSC: 2023-08-18 00:09:47

-  Sequence and Links to Tools and Databases
 
Genomic Sequence (chr12:52,607,570-52,618,559)mRNA (may differ from genome)Protein (540 aa)
Gene SorterGenome BrowserOther Species FASTAGene interactionsTable SchemaAlphaFold
BioGPSEnsemblEntrez GeneExonPrimerGencodeGeneCards
HGNCHPRDLynxMalacardsMGIneXtProt
OMIMPubMedReactomeUniProtKBBioGrid CRISPR DB

-  Comments and Description Text from UniProtKB
  ID: K2C73_HUMAN
DESCRIPTION: RecName: Full=Keratin, type II cytoskeletal 73; AltName: Full=Cytokeratin-73; Short=CK-73; AltName: Full=Keratin-73; Short=K73; AltName: Full=Type II inner root sheath-specific keratin-K6irs3; AltName: Full=Type-II keratin Kb36;
FUNCTION: Has a role in hair formation. Specific component of keratin intermediate filaments in the inner root sheath (IRS) of the hair follicle (Probable).
SUBUNIT: Heterotetramer of two type I and two type II keratins.
TISSUE SPECIFICITY: Highly expressed in hair follicles from scalp. In hair, it is specifically present in the inner root sheath (IRS) of the hair follicle. Present in the IRS cuticle, but not in Henle or Huxley layers of the IRS. In the IRS cuticle, it is expressed between the lowermost bulb region of the cuticle and the region where Henle cells undergo abrupt terminal differentiation. Detected up to the uppermost cortex region where cuticle cells terminally differentiate (at protein level).
MISCELLANEOUS: There are two types of cytoskeletal and microfibrillar keratin, I (acidic) and II (neutral to basic) (40- 55 and 56-70 kDa, respectively).
SIMILARITY: Belongs to the intermediate filament family.

-  Primer design for this transcript
 

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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.
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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

-  RNA-Seq Expression Data from GTEx (53 Tissues, 570 Donors)
  Highest median expression: 12.35 RPKM in Skin - Sun Exposed (Lower leg)
Total median expression: 21.84 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 -0.6035-0.017 Picture PostScript Text
3' UTR -179.90626-0.287 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
IPR016044 - F
IPR001664 - IF
IPR018039 - Intermediate_filament_CS
IPR003054 - Keratin_II

Pfam Domains:
PF00038 - Intermediate filament protein

ModBase Predicted Comparative 3D Structure on Q86Y46
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-  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
Genome BrowserGenome BrowserNo orthologNo orthologNo orthologNo ortholog
Gene Details     
Gene Sorter     
MGIRGD    
Protein SequenceProtein Sequence    
AlignmentAlignment    

-  Gene Ontology (GO) Annotations with Structured Vocabulary
  Molecular Function:
GO:0003674 molecular_function
GO:0005198 structural molecule activity
GO:0005515 protein binding

Biological Process:
GO:0008150 biological_process
GO:0031424 keratinization
GO:0070268 cornification

Cellular Component:
GO:0005634 nucleus
GO:0005829 cytosol
GO:0005882 intermediate filament
GO:0045095 keratin filament
GO:0070062 extracellular exosome


-  Descriptions from all associated GenBank mRNAs
  AJ508776 - Homo sapiens mRNA for keratin 6 irs3 (KRT6IRS3 gene).
JD040737 - Sequence 21761 from Patent EP1572962.
JD262335 - Sequence 243359 from Patent EP1572962.
BC109212 - Homo sapiens keratin 73, mRNA (cDNA clone MGC:129635 IMAGE:40007200), complete cds.
BC109213 - Homo sapiens keratin 73, mRNA (cDNA clone MGC:129636 IMAGE:40007201), complete cds.
JD154411 - Sequence 135435 from Patent EP1572962.
JD121177 - Sequence 102201 from Patent EP1572962.
JD404183 - Sequence 385207 from Patent EP1572962.
JD436217 - Sequence 417241 from Patent EP1572962.
JD443111 - Sequence 424135 from Patent EP1572962.
JD065327 - Sequence 46351 from Patent EP1572962.
JD375530 - Sequence 356554 from Patent EP1572962.
JD264750 - Sequence 245774 from Patent EP1572962.
JD151466 - Sequence 132490 from Patent EP1572962.
JD151440 - Sequence 132464 from Patent EP1572962.
JD467318 - Sequence 448342 from Patent EP1572962.
JD402870 - Sequence 383894 from Patent EP1572962.
JD174363 - Sequence 155387 from Patent EP1572962.
JD317461 - Sequence 298485 from Patent EP1572962.
KJ904181 - Synthetic construct Homo sapiens clone ccsbBroadEn_13575 KRT73 gene, encodes complete protein.

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

Protein Q86Y46 (Reactome details) participates in the following event(s):

R-HSA-6805546 Keratin type I binds keratin type II
R-HSA-6805573 Keratin type I/type II heterodimers form tetramers
R-HSA-6806613 Keratin tetramers bind to form unit length filaments
R-HSA-6805567 Keratinization
R-HSA-1266738 Developmental Biology

-  Other Names for This Gene
  Alternate Gene Symbols: ENST00000305748.1, ENST00000305748.2, ENST00000305748.3, ENST00000305748.4, ENST00000305748.5, ENST00000305748.6, K2C73_HUMAN, K6IRS3, KB36, KRT6IRS3, NM_175068, Q32MB2, Q86Y46, uc001sas.1, uc001sas.2, uc001sas.3
UCSC ID: ENST00000305748.7
RefSeq Accession: NM_175068
Protein: Q86Y46 (aka K2C73_HUMAN)
CCDS: CCDS8834.1

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