U.S. flag

An official website of the United States government

Format

Send to:

Choose Destination

KRT33A keratin 33A [ Homo sapiens (human) ]

Gene ID: 3883, updated on 5-Mar-2024

Summary

Official Symbol
KRT33Aprovided by HGNC
Official Full Name
keratin 33Aprovided by HGNC
Primary source
HGNC:HGNC:6450
See related
Ensembl:ENSG00000006059 MIM:602761; AllianceGenome:HGNC:6450
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Homo sapiens
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo
Also known as
HA3I; K33A; Ha-3I; Krt1-3; hHa3-I; KRTHA3A
Summary
This gene encodes a member of the keratin gene family. This gene is one of multiple type I hair keratin genes that are clustered in a region of chromosome 17q12-q21 and have the same direction of transcription. As a type I hair keratin, the encoded protein is an acidic protein which heterodimerizes with type II keratins to form hair and nails. There are two isoforms of this protein, encoded by two separate genes, keratin 33A and keratin 33B. [provided by RefSeq, May 2012]
Expression
Low expression observed in reference dataset See more
Orthologs
NEW
Try the new Gene table
Try the new Transcript table

Genomic context

Location:
17q21.2
Exon count:
8
Annotation release Status Assembly Chr Location
RS_2023_10 current GRCh38.p14 (GCF_000001405.40) 17 NC_000017.11 (41346092..41350828, complement)
RS_2023_10 current T2T-CHM13v2.0 (GCF_009914755.1) 17 NC_060941.1 (42201624..42206360, complement)
105.20220307 previous assembly GRCh37.p13 (GCF_000001405.25) 17 NC_000017.10 (39502344..39507080, complement)

Chromosome 17 - NC_000017.11Genomic Context describing neighboring genes Neighboring gene keratin associated protein 17-1 Neighboring gene TBC1 domain family member 3 pseudogene 7 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr17:39485793-39486362 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr17:39502712-39503212 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr17:39503213-39503713 Neighboring gene uncharacterized LOC105371778 Neighboring gene H3K4me1 hESC enhancer GRCh37_chr17:39520859-39521360 Neighboring gene keratin 33B

Genomic regions, transcripts, and products

Expression

  • Project title: HPA RNA-seq normal tissues
  • Description: RNA-seq was performed of tissue samples from 95 human individuals representing 27 different tissues in order to determine tissue-specificity of all protein-coding genes
  • BioProject: PRJEB4337
  • Publication: PMID 24309898
  • Analysis date: Wed Apr 4 07:08:55 2018

Interactions

Products Interactant Other Gene Complex Source Pubs Description

General gene information

Markers

Gene Ontology Provided by GOA

Function Evidence Code Pubs
enables structural molecule activity IEA
Inferred from Electronic Annotation
more info
 
Process Evidence Code Pubs
involved_in epithelial cell differentiation IBA
Inferred from Biological aspect of Ancestor
more info
 
involved_in intermediate filament organization IBA
Inferred from Biological aspect of Ancestor
more info
 
Component Evidence Code Pubs
is_active_in cytoskeleton IBA
Inferred from Biological aspect of Ancestor
more info
 
located_in cytosol TAS
Traceable Author Statement
more info
 
located_in extracellular space HDA PubMed 
located_in intermediate filament IEA
Inferred from Electronic Annotation
more info
 

General protein information

Preferred Names
keratin, type I cuticular Ha3-I
Names
hair keratin, type I Ha3-I
hard keratin, type I,3I
keratin 33A, type I
keratin, hair, acidic, 3A

NCBI Reference Sequences (RefSeq)

NEW Try the new Transcript table

RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

Genomic

  1. NG_012289.1 RefSeqGene

    Range
    4977..9713
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_004138.4NP_004129.2  keratin, type I cuticular Ha3-I

    See identical proteins and their annotated locations for NP_004129.2

    Status: REVIEWED

    Source sequence(s)
    AC003958, AJ633621
    Consensus CDS
    CCDS11388.1
    UniProtKB/Swiss-Prot
    B2RA87, O76009, Q6NTB9, Q6ZZB9
    Related
    ENSP00000007735.3, ENST00000007735.4
    Conserved Domains (1) summary
    pfam00038
    Location:55366
    Filament; Intermediate filament protein

RefSeqs of Annotated Genomes: GCF_000001405.40-RS_2023_10

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCh38.p14 Primary Assembly

Genomic

  1. NC_000017.11 Reference GRCh38.p14 Primary Assembly

    Range
    41346092..41350828 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_011524786.4XP_011523088.1  keratin, type I cuticular Ha3-I isoform X1

    See identical proteins and their annotated locations for XP_011523088.1

    Conserved Domains (1) summary
    pfam00038
    Location:37207
    Filament; Intermediate filament protein

Reference GRCh38.p14 PATCHES

Genomic

  1. NW_025791801.1 Reference GRCh38.p14 PATCHES

    Range
    285996..290732 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_054333197.1XP_054189172.1  keratin, type I cuticular Ha3-I isoform X1

Reference GRCh38.p14 ALT_REF_LOCI_1

Genomic

  1. NW_003315953.2 Reference GRCh38.p14 ALT_REF_LOCI_1

    Range
    89433..94169
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_054329581.1XP_054185556.1  keratin, type I cuticular Ha3-I isoform X1

Alternate T2T-CHM13v2.0

Genomic

  1. NC_060941.1 Alternate T2T-CHM13v2.0

    Range
    42201624..42206360 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. XM_054316025.1XP_054172000.1  keratin, type I cuticular Ha3-I isoform X1