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ATXN7 ataxin 7 [ Homo sapiens (human) ]

Gene ID: 6314, updated on 15-Sep-2014
Official Symbol
ATXN7provided by HGNC
Official Full Name
ataxin 7provided by HGNC
Primary source
HGNC:HGNC:10560
See related
Ensembl:ENSG00000163635; HPRD:06365; MIM:607640; Vega:OTTHUMG00000158763
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
SCA7; OPCA3; ADCAII
Summary
The autosomal dominant cerebellar ataxias (ADCA) are a heterogeneous group of neurodegenerative disorders characterized by progressive degeneration of the cerebellum, brain stem and spinal cord. Clinically, ADCA has been divided into three groups: ADCA types I-III. ADCAI is genetically heterogeneous, with five genetic loci, designated spinocerebellar ataxia (SCA) 1, 2, 3, 4 and 6, being assigned to five different chromosomes. ADCAII, which always presents with retinal degeneration (SCA7), and ADCAIII often referred to as the 'pure' cerebellar syndrome (SCA5), are most likely homogeneous disorders. Several SCA genes have been cloned and shown to contain CAG repeats in their coding regions. ADCA is caused by the expansion of the CAG repeats, producing an elongated polyglutamine tract in the corresponding protein. The expanded repeats are variable in size and unstable, usually increasing in size when transmitted to successive generations. This locus has been mapped to chromosome 3, and it has been determined that the diseased allele associated with spinocerebellar ataxia-7 contains 38-130 CAG repeats (near the N-terminus), compared to 7-17 in the normal allele. The encoded protein is a component of the SPT3/TAF9/GCN5 acetyltransferase (STAGA) and TBP-free TAF-containing (TFTC) chromatin remodeling complexes, and it thus plays a role in transcriptional regulation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Apr 2010]
See ATXN7 in Epigenomics, MapViewer
Location:
3p21.1-p12
Exon count:
15
Annotation release Status Assembly Chr Location
106 current GRCh38 (GCF_000001405.26) 3 NC_000003.12 (63864557..64003462)
105 previous assembly GRCh37.p13 (GCF_000001405.25) 3 NC_000003.11 (63849785..63989240)

Chromosome 3 - NC_000003.12Genomic Context describing neighboring genes Neighboring gene chromosome 3 open reading frame 49 Neighboring gene THO complex 7 homolog (Drosophila) Neighboring gene THOC7 antisense RNA 1 Neighboring gene PSMD6 antisense RNA 2 Neighboring gene proteasome (prosome, macropain) 26S subunit, non-ATPase, 6 Neighboring gene PRICKLE2 antisense RNA 1 Neighboring gene long intergenic non-protein coding RNA 994

GeneRIFs: Gene References Into FunctionsWhat's a GeneRIF?

  • Chromatin modifying enzymes, organism-specific biosystem (from REACTOME)
    Chromatin modifying enzymes, organism-specific biosystemEukaryotic DNA is associated with histone proteins and organized into a complex nucleoprotein structure called chromatin. This structure decreases the accessibility of DNA but also helps to protect i...
  • Chromatin organization, organism-specific biosystem (from REACTOME)
    Chromatin organization, organism-specific biosystemChromatin organization refers to the composition and conformation of complexes between DNA, protein and RNA. It is determined by processes that result in the specification, formation or maintenance o...
  • HATs acetylate histones, organism-specific biosystem (from REACTOME)
    HATs acetylate histones, organism-specific biosystemHistone acetyltransferases (HATs) involved in histone modifications are referred to as A-type or nuclear HATs. They can be grouped into at least four families based on sequence conservation within th...
Products Interactant Other Gene Complex Source Pubs Description

Markers

Homology

Clone Names

  • FLJ17787

Gene Ontology Provided by GOA

Function Evidence Code Pubs
chromatin binding IEA
Inferred from Electronic Annotation
more info
 
protein binding IPI
Inferred from Physical Interaction
more info
PubMed 
Process Evidence Code Pubs
cell death IEA
Inferred from Electronic Annotation
more info
 
chromatin organization TAS
Traceable Author Statement
more info
 
histone deubiquitination IDA
Inferred from Direct Assay
more info
PubMed 
microtubule cytoskeleton organization IMP
Inferred from Mutant Phenotype
more info
 
negative regulation of insulin-like growth factor receptor signaling pathway IEA
Inferred from Electronic Annotation
more info
 
negative regulation of phosphorylation IEA
Inferred from Electronic Annotation
more info
 
nucleus organization TAS
Traceable Author Statement
more info
PubMed 
positive regulation of transcription from RNA polymerase II promoter IEA
Inferred from Electronic Annotation
more info
 
transcription, DNA-templated IEA
Inferred from Electronic Annotation
more info
 
visual perception TAS
Traceable Author Statement
more info
PubMed 
Component Evidence Code Pubs
cytoplasm IDA
Inferred from Direct Assay
more info
 
microtubule cytoskeleton IDA
Inferred from Direct Assay
more info
 
nuclear matrix IEA
Inferred from Electronic Annotation
more info
 
NOT nucleolus IDA
Inferred from Direct Assay
more info
 
nucleus IDA
Inferred from Direct Assay
more info
 
Preferred Names
ataxin-7
Names
ataxin-7
spinocerebellar ataxia type 7 protein

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_008227.1 

    Range
    5001..143906
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

  1. NM_000333.3NP_000324.1  ataxin-7 isoform a

    See proteins identical to NP_000324.1

    Status: REVIEWED

    Description
    Transcript Variant: This variant (SCA7a) represents the predominant transcript and encodes isoform a.
    Source sequence(s)
    AC012557, AF032104, AJ000517, BI494079
    Consensus CDS
    CCDS43102.1
    UniProtKB/Swiss-Prot
    O15265
    UniProtKB/TrEMBL
    Q9UPD8
    Related
    ENSP00000295900, OTTHUMP00000213403, ENST00000295900, OTTHUMT00000352070
    Conserved Domains (1) summary
    pfam08313
    Location:317397
    SCA7; SCA7, zinc-binding domain
  2. NM_001128149.2NP_001121621.2  ataxin-7 isoform c

    Status: REVIEWED

    Description
    Transcript Variant: This variant (SCA7c) differs in the 5' UTR and 5' coding region, and uses an alternate start codon, compared to variant SCA7a. The encoded isoform (c) has a distinct N-terminus and is shorter than isoform a.
    Source sequence(s)
    AC012557, AK304062, BI494079, BP220889
    Consensus CDS
    CCDS46861.2
    UniProtKB/Swiss-Prot
    O15265
    Conserved Domains (1) summary
    pfam08313
    Location:172252
    SCA7; SCA7, zinc-binding domain
  3. NM_001177387.1NP_001170858.1  ataxin-7 isoform b

    Status: REVIEWED

    Description
    Transcript Variant: This variant (SCA7b) includes an alternate exon that causes a frameshift in the 3' coding region, compared to variant SCA7a, resulting in an isoform (b) with a distinct and longer C-terminus, compared to isoform a. The 5' UTR is incomplete in this variant due to the presence of alternate splicing choices further upstream. There are no publicly available full-length transcripts representing this variant; it is represented based on data in PMID:12533095.
    Source sequence(s)
    AA398030, AC012557, AJ000517, BI494079
    Consensus CDS
    CCDS54603.1
    UniProtKB/Swiss-Prot
    O15265
    Related
    ENSP00000439585, ENST00000538065
    Conserved Domains (1) summary
    pfam08313
    Location:317397
    SCA7; SCA7, zinc-binding domain

RefSeqs of Annotated Genomes: Homo sapiens Annotation Release 106

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

Reference GRCh38 Primary Assembly

Genomic

  1. NC_000003.12 

    Range
    63864557..64003462
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Alternate HuRef

Genomic

  1. AC_000135.1 

    Range
    63947138..64086205
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)

Alternate CHM1_1.1

Genomic

  1. NC_018914.2 

    Range
    63801559..63940470
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)