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Entry version 195 (22 Apr 2020)
Sequence version 2 (23 Sep 2008)
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Protein

Ataxin-1

Gene

ATXN1

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Chromatin-binding factor that repress Notch signaling in the absence of Notch intracellular domain by acting as a CBF1 corepressor. Binds to the HEY promoter and might assist, along with NCOR2, RBPJ-mediated repression. Binds RNA in vitro. May be involved in RNA metabolism (PubMed:21475249). In concert with CIC and ATXN1L, involved in brain development (By similarity).By similarity1 Publication

Miscellaneous

Self-association seems to be necessary for formation of nuclear aggregates which are associated with pathogenesis.

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionDNA-binding, Repressor, RNA-binding
Biological processTranscription, Transcription regulation

Enzyme and pathway databases

SIGNOR Signaling Network Open Resource

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SIGNORi
P54253

Protein family/group databases

MoonDB Database of extreme multifunctional and moonlighting proteins

More...
MoonDBi
P54253 Predicted

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Ataxin-1
Alternative name(s):
Spinocerebellar ataxia type 1 protein
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:ATXN1
Synonyms:ATX1, SCA1
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiHomo sapiens (Human)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri9606 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000005640 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 6

Organism-specific databases

Human Gene Nomenclature Database

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HGNCi
HGNC:10548 ATXN1

Online Mendelian Inheritance in Man (OMIM)

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MIMi
601556 gene

neXtProt; the human protein knowledge platform

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neXtProti
NX_P54253

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Cytoplasm, Nucleus

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the 'Pathology and Biotech' section provides information on the disease(s) associated with genetic variations in a given protein. The information is extracted from the scientific literature and diseases that are also described in the <a href="http://www.ncbi.nlm.nih.gov/sites/entrez?db=omim">OMIM</a> database are represented with a <a href="http://www.uniprot.org/diseases">controlled vocabulary</a> in the following way:<p><a href='/help/involvement_in_disease' target='_top'>More...</a></p>Involvement in diseasei

Spinocerebellar ataxia 1 (SCA1)3 Publications
The disease is caused by mutations affecting the gene represented in this entry. The disease is caused by expansion of the polyglutamine tract to about 40-83 repeats, causing accumulation in neurons and exerting toxicity.2 Publications
Disease descriptionSpinocerebellar ataxia is a clinically and genetically heterogeneous group of cerebellar disorders. Patients show progressive incoordination of gait and often poor coordination of hands, speech and eye movements, due to cerebellum degeneration with variable involvement of the brainstem and spinal cord. SCA1 belongs to the autosomal dominant cerebellar ataxias type I (ADCA I) which are characterized by cerebellar ataxia in combination with additional clinical features like optic atrophy, ophthalmoplegia, bulbar and extrapyramidal signs, peripheral neuropathy and dementia. SCA1 is caused by expansion of a CAG repeat in the coding region of ATXN1. Longer expansions result in earlier onset and more severe clinical manifestations of the disease.
Related information in OMIM

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology%5Fand%5Fbiotech%5Fsection">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi16K → R: Sumoylation reduced to 40% of wild-type. 1 Publication1
Mutagenesisi194K → R: Sumoylation reduced to 46% of wild-type. 1 Publication1
Mutagenesisi420K → R: No effect on sumoylation. 1 Publication1
Mutagenesisi529K → R: Sumoylation reduced to 57% of wild-type. 1 Publication1
Mutagenesisi589K → R: Sumoylation reduced to 53% of wild-type. 1 Publication1
Mutagenesisi594K → R: Sumoylation reduced to 68% of wild-type. 1 Publication1
Mutagenesisi609K → R: Sumoylation reduced to 43% of wild-type. 1 Publication1
Mutagenesisi691K → R: No effect on sumoylation. 1 Publication1
Mutagenesisi696K → R: Sumoylation reduced to 42% of wild-type. 1 Publication1
Mutagenesisi745K → R: Sumoylation reduced to 44% of wild-type. 1 Publication1
Mutagenesisi775S → A: Reduces phosphorylation but does not affect nuclear localization. 1 Publication1
Mutagenesisi784K → R: Sumoylation reduced to 62% of wild-type. 1 Publication1

Keywords - Diseasei

Neurodegeneration, Spinocerebellar ataxia

Organism-specific databases

DisGeNET

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DisGeNETi
6310

GeneReviews a resource of expert-authored, peer-reviewed disease descriptions.

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GeneReviewsi
ATXN1

MalaCards human disease database

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MalaCardsi
ATXN1
MIMi164400 phenotype

Open Targets

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OpenTargetsi
ENSG00000124788

Orphanet; a database dedicated to information on rare diseases and orphan drugs

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Orphaneti
98755 Spinocerebellar ataxia type 1

The Pharmacogenetics and Pharmacogenomics Knowledge Base

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PharmGKBi
PA34958

Miscellaneous databases

Pharos NIH Druggable Genome Knowledgebase

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Pharosi
P54253 Tbio

Polymorphism and mutation databases

BioMuta curated single-nucleotide variation and disease association database

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BioMutai
ATXN1

Domain mapping of disease mutations (DMDM)

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DMDMi
206729854

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000647511 – 815Ataxin-1Add BLAST815

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section describes <strong>covalent linkages</strong> of various types formed <strong>between two proteins (interchain cross-links)</strong> or <strong>between two parts of the same protein (intrachain cross-links)</strong>, except the disulfide bonds that are annotated in the <a href="http://www.uniprot.org/manual/disulfid">'Disulfide bond'</a> subsection.<p><a href='/help/crosslnk' target='_top'>More...</a></p>Cross-linki16Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO)1 Publication
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei82PhosphoserineBy similarity1
Modified residuei88PhosphoserineCombined sources1
Cross-linki194Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO)1 Publication
Modified residuei238PhosphoserineCombined sources1
Modified residuei253PhosphoserineBy similarity1
Cross-linki609Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO)1 Publication
Cross-linki696Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO)1 Publication
Cross-linki745Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO)1 Publication
Modified residuei775Phosphoserine1 Publication1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Ubiquitinated by UBE3A, leading to its degradation by the proteasome. The presence of expanded poly-Gln repeats in spinocerebellar ataxia 1 (SCA1) patients impairs ubiquitination and degradation, leading to accumulation of ATXN1 in neurons and subsequent toxicity.By similarity
Phosphorylation at Ser-775 increases the pathogenicity of proteins with an expanded polyglutamine tract.1 Publication
Sumoylation is dependent on nuclear localization and phosphorylation at Ser-775. It is reduced in the presence of an expanded polyglutamine tract.2 Publications

Keywords - PTMi

Isopeptide bond, Phosphoprotein, Ubl conjugation

Proteomic databases

Encyclopedia of Proteome Dynamics

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EPDi
P54253

jPOST - Japan Proteome Standard Repository/Database

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jPOSTi
P54253

MassIVE - Mass Spectrometry Interactive Virtual Environment

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MassIVEi
P54253

MaxQB - The MaxQuant DataBase

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MaxQBi
P54253

PaxDb, a database of protein abundance averages across all three domains of life

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PaxDbi
P54253

PeptideAtlas

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PeptideAtlasi
P54253

PRoteomics IDEntifications database

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PRIDEi
P54253

ProteomicsDB: a multi-organism proteome resource

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ProteomicsDBi
56658 [P54253-1]

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

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iPTMneti
P54253

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

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PhosphoSitePlusi
P54253

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Widely expressed throughout the body.1 Publication

<p>This subsection of the 'Expression' section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

ATXN1 protein levels are directly regulated by PUM1 protein: PUM1 acts by binding to the 3'-UTR of ATXN1 mRNA, affecting ATXN1 mRNA stability and leading to reduced ATXN1 protein levels.1 Publication

Gene expression databases

Bgee dataBase for Gene Expression Evolution

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Bgeei
ENSG00000124788 Expressed in caudate nucleus and 243 other tissues

ExpressionAtlas, Differential and Baseline Expression

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ExpressionAtlasi
P54253 baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

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Genevisiblei
P54253 HS

Organism-specific databases

Human Protein Atlas

More...
HPAi
ENSG00000124788 Low tissue specificity

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homooligomer (PubMed:9097953).

Interacts with CIC (By similarity).

Interacts with ANP32A, PQBP1, UBQLN4, ATXN1L and USP7 (PubMed:9353121, PubMed:11001934, PubMed:12062018, PubMed:12093161, PubMed:16121196). Directly interacts with RBPJ; this interaction is disrupted in the presence of Notch intracellular domain. Competes with ATXN1L for RBPJ-binding (PubMed:21475249).

Found in a complex with CIC and ATXN1L (By similarity).

By similarity8 Publications

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

P54253
With#Exp.IntAct
itself10EBI-930964,EBI-930964
ADAM15 - isoform 2 [Q13444-2]3EBI-930964,EBI-12137265
ARID5A [Q03989]3EBI-930964,EBI-948603
ATXN2 [Q99700]4EBI-930964,EBI-697691
BHLHE40 [O14503]3EBI-930964,EBI-711810
BICRAL [Q6AI39]3EBI-930964,EBI-1012434
C10orf55 [Q5SWW7]3EBI-930964,EBI-12809220
C1orf94 [Q6P1W5]9EBI-930964,EBI-946029
CAMK1 [Q14012]6EBI-930964,EBI-6380130
CCNK [O75909]2EBI-930964,EBI-739806
CFL1 [P23528]5EBI-930964,EBI-352733
CIC [Q96RK0]8EBI-930964,EBI-945857
COIL [P38432]3EBI-930964,EBI-945751
CPSF7 [Q8N684]2EBI-930964,EBI-746909
CRK [P46108]3EBI-930964,EBI-886
CRX [O43186]3EBI-930964,EBI-748171
CUTC [Q9NTM9]3EBI-930964,EBI-714918
DAZ2 - isoform 3 [Q13117-3]3EBI-930964,EBI-13357576
DAZAP2 [Q15038]2EBI-930964,EBI-724310
ELP5 [Q8TE02]2EBI-930964,EBI-946189
EML3 [Q32P44]3EBI-930964,EBI-1046713
EPN2 - isoform 2 [O95208-2]3EBI-930964,EBI-12135243
ESRP1 [Q6NXG1]6EBI-930964,EBI-10213520
EXTL3 [O43909]3EBI-930964,EBI-1754679
FAM153B - isoform 2 [P0C7A2-2]3EBI-930964,EBI-12940382
FAM168A - isoform 2 [Q92567-2]3EBI-930964,EBI-11978259
FNDC9 [Q8TBE3]3EBI-930964,EBI-12142257
FOXN4 [Q96NZ1]3EBI-930964,EBI-11749712
GMEB2 [Q9UKD1]5EBI-930964,EBI-948296
GPATCH8 [Q9UKJ3]4EBI-930964,EBI-948259
HIVEP1 [P15822]6EBI-930964,EBI-722264
HSFX2 [Q9UBD0]3EBI-930964,EBI-947253
HSFY2 [Q96LI6]3EBI-930964,EBI-3957665
IST1 [P53990]2EBI-930964,EBI-945994
IST1 - isoform 3 [P53990-3]3EBI-930964,EBI-12188567
KAT5 [Q92993]3EBI-930964,EBI-399080
KLHL12 [Q53G59]2EBI-930964,EBI-740929
KRTAP12-4 [P60329]3EBI-930964,EBI-10176396
KRTAP13-3 [Q3SY46]3EBI-930964,EBI-10241252
LASP1 - isoform 2 [Q14847-2]3EBI-930964,EBI-9088686
METTL17 [Q9H7H0]5EBI-930964,EBI-749353
METTL27 [Q8N6F8]3EBI-930964,EBI-8487781
NFYA - isoform Short [P23511-2]3EBI-930964,EBI-11061759
NHSL2 [Q5HYW2]3EBI-930964,EBI-2859639
NUDT21 [O43809]2EBI-930964,EBI-355720
PANX2 [Q495U3]3EBI-930964,EBI-17242559
PICALM - isoform 3 [Q13492-3]3EBI-930964,EBI-11031437
PLA2G10 [O15496]3EBI-930964,EBI-726466
PLEKHA5 [Q9HAU0]2EBI-930964,EBI-945934
PLEKHN1 - isoform 3 [Q494U1-3]3EBI-930964,EBI-12014286
POGZ [Q7Z3K3]3EBI-930964,EBI-1389308
PRR20C [P86479]3EBI-930964,EBI-10172814
PRR20D [P86480]3EBI-930964,EBI-12754095
PRRC2A [P48634]4EBI-930964,EBI-347545
RBFOX1 [Q9NWB1]2EBI-930964,EBI-945906
RBFOX2 [O43251]10EBI-930964,EBI-746056
RBFOX2 - isoform 10 [O43251-10]3EBI-930964,EBI-11963050
RBM17 [Q96I25]5EBI-930964,EBI-740272
RBPJ [Q06330]7EBI-930964,EBI-632552
RBPMS [Q93062]6EBI-930964,EBI-740322
RBPMS - isoform C [Q93062-3]3EBI-930964,EBI-740343
RCN1 [Q15293]3EBI-930964,EBI-948278
REL [Q04864]3EBI-930964,EBI-307352
REL - isoform 2 [Q04864-2]3EBI-930964,EBI-10829018
SIX5 [Q8N196]4EBI-930964,EBI-946167
SORCS3 [Q9UPU3]3EBI-930964,EBI-7484437
SOX3 [P41225]3EBI-930964,EBI-9078386
SYBU [Q9NX95]3EBI-930964,EBI-948293
SYBU - isoform 5 [Q9NX95-5]3EBI-930964,EBI-12816095
TBC1D5 [Q92609]2EBI-930964,EBI-742381
TBX15 [Q96SF7]3EBI-930964,EBI-10191361
TENT5B [Q96A09]5EBI-930964,EBI-752030
TPRX1 - isoform 2 [Q8N7U7-2]3EBI-930964,EBI-14115717
TRAF2 [Q12933]8EBI-930964,EBI-355744
TRIM32 [Q13049]2EBI-930964,EBI-742790
TSC1 [Q86WV8]3EBI-930964,EBI-12806590
U2AF2 [P26368]5EBI-930964,EBI-742339
UBQLN4 [Q9NRR5]6EBI-930964,EBI-711226
USP54 [Q70EL1]3EBI-930964,EBI-946185
USP54 - isoform 6 [Q70EL1-9]3EBI-930964,EBI-11975223
VSTM2L [Q96N03]3EBI-930964,EBI-948213
YY1AP1 [Q9H869]4EBI-930964,EBI-946122
ZBTB32 [A0A0C4DGF1]3EBI-930964,EBI-10188476
ZC3H10 [Q96K80]4EBI-930964,EBI-742550
ZHX1 [Q9UKY1]5EBI-930964,EBI-347767
ZNF488 [Q96MN9]6EBI-930964,EBI-948288
Isoform 1 [P54253-1]
With#Exp.IntAct
COIL [P38432]6EBI-930975,EBI-945751

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

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BioGridi
112217, 266 interactors

CORUM comprehensive resource of mammalian protein complexes

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CORUMi
P54253

Database of interacting proteins

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DIPi
DIP-35353N

Protein interaction database and analysis system

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IntActi
P54253, 334 interactors

Molecular INTeraction database

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MINTi
P54253

STRING: functional protein association networks

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STRINGi
9606.ENSP00000244769

Chemistry databases

BindingDB database of measured binding affinities

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BindingDBi
P54253

Miscellaneous databases

RNAct, Protein-RNA interaction predictions for model organisms.

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RNActi
P54253 protein

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1815
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

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SMRi
P54253

Database of comparative protein structure models

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ModBasei
Search...

Protein Data Bank in Europe - Knowledge Base

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PDBe-KBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

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EvolutionaryTracei
P54253

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini562 – 693AXHPROSITE-ProRule annotationAdd BLAST132

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni494 – 604Self-association1 PublicationAdd BLAST111
Regioni538 – 815Interaction with USP71 PublicationAdd BLAST278
Regioni540 – 766RNA-binding1 PublicationAdd BLAST227

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi794 – 797Nuclear localization signalBy similarity4

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi197 – 225Poly-GlnAdd BLAST29

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The AXH domain is required for interaction with CIC.By similarity

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the ATXN1 family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

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eggNOGi
KOG4053 Eukaryota
ENOG410XSNX LUCA

Ensembl GeneTree

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GeneTreei
ENSGT00390000005939

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_019983_0_0_1

InParanoid: Eukaryotic Ortholog Groups

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InParanoidi
P54253

KEGG Orthology (KO)

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KOi
K23616

Identification of Orthologs from Complete Genome Data

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OMAi
SDNHRAE

Database for complete collections of gene phylogenies

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PhylomeDBi
P54253

TreeFam database of animal gene trees

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TreeFami
TF350643

Family and domain databases

Integrated resource of protein families, domains and functional sites

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InterProi
View protein in InterPro
IPR003652 Ataxin_AXH_dom
IPR036096 Ataxin_AXH_dom_sf
IPR040172 ATXN1
IPR020997 Capicua_tscrpt_rep_mod

The PANTHER Classification System

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PANTHERi
PTHR13392:SF5 PTHR13392:SF5, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF12547 ATXN-1_C, 1 hit
PF08517 AXH, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

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SMARTi
View protein in SMART
SM00536 AXH, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF102031 SSF102031, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51148 AXH, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequence (1+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

This entry describes 1 <p>This subsection of the 'Sequence' section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform. This section is only present in reviewed entries, i.e. in UniProtKB/Swiss-Prot.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoform i produced by alternative splicing. AlignAdd to basket
Note: At least 2 isoforms are produced.

This entry has 1 described isoform and 1 potential isoform that is computationally mapped.Show allAlign All

Isoform 1 (identifier: P54253-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the <div> <p><b>What is the canonical sequence?</b><p><a href='/help/canonical_and_isoforms' target='_top'>More...</a></p>canonicali sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MKSNQERSNE CLPPKKREIP ATSRSSEEKA PTLPSDNHRV EGTAWLPGNP
60 70 80 90 100
GGRGHGGGRH GPAGTSVELG LQQGIGLHKA LSTGLDYSPP SAPRSVPVAT
110 120 130 140 150
TLPAAYATPQ PGTPVSPVQY AHLPHTFQFI GSSQYSGTYA SFIPSQLIPP
160 170 180 190 200
TANPVTSAVA SAAGATTPSQ RSQLEAYSTL LANMGSLSQT PGHKAEQQQQ
210 220 230 240 250
QQQQQQQQHQ HQQQQQQQQQ QQQQQHLSRA PGLITPGSPP PAQQNQYVHI
260 270 280 290 300
SSSPQNTGRT ASPPAIPVHL HPHQTMIPHT LTLGPPSQVV MQYADSGSHF
310 320 330 340 350
VPREATKKAE SSRLQQAIQA KEVLNGEMEK SRRYGAPSSA DLGLGKAGGK
360 370 380 390 400
SVPHPYESRH VVVHPSPSDY SSRDPSGVRA SVMVLPNSNT PAADLEVQQA
410 420 430 440 450
THREASPSTL NDKSGLHLGK PGHRSYALSP HTVIQTTHSA SEPLPVGLPA
460 470 480 490 500
TAFYAGTQPP VIGYLSGQQQ AITYAGSLPQ HLVIPGTQPL LIPVGSTDME
510 520 530 540 550
ASGAAPAIVT SSPQFAAVPH TFVTTALPKS ENFNPEALVT QAAYPAMVQA
560 570 580 590 600
QIHLPVVQSV ASPAAAPPTL PPYFMKGSII QLANGELKKV EDLKTEDFIQ
610 620 630 640 650
SAEISNDLKI DSSTVERIED SHSPGVAVIQ FAVGEHRAQV SVEVLVEYPF
660 670 680 690 700
FVFGQGWSSC CPERTSQLFD LPCSKLSVGD VCISLTLKNL KNGSVKKGQP
710 720 730 740 750
VDPASVLLKH SKADGLAGSR HRYAEQENGI NQGSAQMLSE NGELKFPEKM
760 770 780 790 800
GLPAAPFLTK IEPSKPAATR KRRWSAPESR KLEKSEDEPP LTLPKPSLIP
810
QEVKICIEGR SNVGK
Length:815
Mass (Da):86,923
Last modified:September 23, 2008 - v2
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i657876F8FD19ECB2
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There is 1 potential isoform mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
A0A2R8YCF3A0A2R8YCF3_HUMAN
Ataxin-1
ATXN1
185Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti211H → HQ in CAA55793 (PubMed:7951322).Curated1

<p>This subsection of the 'Sequence' section provides information on polymorphic variants. If the variant is associated with a disease state, the description of the latter can be found in the <a href="http://www.uniprot.org/manual/involvement%5Fin%5Fdisease">'Involvement in disease'</a> subsection.<p><a href='/help/polymorphism' target='_top'>More...</a></p>Polymorphismi

The poly-Gln region of ATXN1 is highly polymorphic (4 to 39 repeats) in the normal population and is expanded to about 40-83 repeats in spinocerebellar ataxia 1 (SCA1) patients.1 Publication

Natural variant

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section describes natural variant(s) of the protein sequence.<p><a href='/help/variant' target='_top'>More...</a></p>Natural variantiVAR_046616209H → Q. Corresponds to variant dbSNP:rs11969612Ensembl.1
Natural variantiVAR_046617753P → S. Corresponds to variant dbSNP:rs16885EnsemblClinVar.1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
X79204 mRNA Translation: CAA55793.1
AL009031 Genomic DNA No translation available.
BC117125 mRNA Translation: AAI17126.1
S82497 Genomic DNA Translation: AAD14401.1

The Consensus CDS (CCDS) project

More...
CCDSi
CCDS34342.1 [P54253-1]

Protein sequence database of the Protein Information Resource

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PIRi
S46268

NCBI Reference Sequences

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RefSeqi
NP_000323.2, NM_000332.3 [P54253-1]
NP_001121636.1, NM_001128164.1 [P54253-1]

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...
Ensembli
ENST00000244769; ENSP00000244769; ENSG00000124788 [P54253-1]
ENST00000436367; ENSP00000416360; ENSG00000124788 [P54253-1]

Database of genes from NCBI RefSeq genomes

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GeneIDi
6310

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
hsa:6310

UCSC genome browser

More...
UCSCi
uc003nbt.4 human [P54253-1]

Keywords - Coding sequence diversityi

Alternative splicing, Polymorphism, Triplet repeat expansion

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

<p>This subsection of the <a href="http://www.uniprot.org/manual/cross%5Freferences%5Fsection">Cross-references</a> section provides links to various web resources that are relevant for a specific protein.<p><a href='/help/web_resource' target='_top'>More...</a></p>Web resourcesi

Wikipedia

Ataxin-1 entry

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X79204 mRNA Translation: CAA55793.1
AL009031 Genomic DNA No translation available.
BC117125 mRNA Translation: AAI17126.1
S82497 Genomic DNA Translation: AAD14401.1
CCDSiCCDS34342.1 [P54253-1]
PIRiS46268
RefSeqiNP_000323.2, NM_000332.3 [P54253-1]
NP_001121636.1, NM_001128164.1 [P54253-1]

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1OA8X-ray1.70A/B/C/D562-693[»]
2M41NMR-B566-688[»]
4APTX-ray2.50A/B/C/D566-688[»]
4AQPX-ray2.45A/B/C/D566-688[»]
4J2JX-ray2.50A/B/C562-688[»]
4J2LX-ray3.15A/B562-688[»]
SMRiP54253
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGridi112217, 266 interactors
CORUMiP54253
DIPiDIP-35353N
IntActiP54253, 334 interactors
MINTiP54253
STRINGi9606.ENSP00000244769

Chemistry databases

BindingDBiP54253

Protein family/group databases

MoonDBiP54253 Predicted

PTM databases

iPTMnetiP54253
PhosphoSitePlusiP54253

Polymorphism and mutation databases

BioMutaiATXN1
DMDMi206729854

Proteomic databases

EPDiP54253
jPOSTiP54253
MassIVEiP54253
MaxQBiP54253
PaxDbiP54253
PeptideAtlasiP54253
PRIDEiP54253
ProteomicsDBi56658 [P54253-1]

Protocols and materials databases

ABCD curated depository of sequenced antibodies

More...
ABCDi
P54253

Antibodypedia a portal for validated antibodies

More...
Antibodypediai
1922 790 antibodies

Genome annotation databases

EnsembliENST00000244769; ENSP00000244769; ENSG00000124788 [P54253-1]
ENST00000436367; ENSP00000416360; ENSG00000124788 [P54253-1]
GeneIDi6310
KEGGihsa:6310
UCSCiuc003nbt.4 human [P54253-1]

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
6310
DisGeNETi6310

GeneCards: human genes, protein and diseases

More...
GeneCardsi
ATXN1
GeneReviewsiATXN1
HGNCiHGNC:10548 ATXN1
HPAiENSG00000124788 Low tissue specificity
MalaCardsiATXN1
MIMi164400 phenotype
601556 gene
neXtProtiNX_P54253
OpenTargetsiENSG00000124788
Orphaneti98755 Spinocerebellar ataxia type 1
PharmGKBiPA34958

GenAtlas: human gene database

More...
GenAtlasi
Search...

Phylogenomic databases

eggNOGiKOG4053 Eukaryota
ENOG410XSNX LUCA
GeneTreeiENSGT00390000005939
HOGENOMiCLU_019983_0_0_1
InParanoidiP54253
KOiK23616
OMAiSDNHRAE
PhylomeDBiP54253
TreeFamiTF350643

Enzyme and pathway databases

SIGNORiP54253

Miscellaneous databases

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

More...
ChiTaRSi
ATXN1 human
EvolutionaryTraceiP54253

The Gene Wiki collection of pages on human genes and proteins

More...
GeneWikii
Ataxin_1

Database of phenotypes from RNA interference screens in Drosophila and Homo sapiens

More...
GenomeRNAii
6310
PharosiP54253 Tbio

Protein Ontology

More...
PROi
PR:P54253
RNActiP54253 protein

The Stanford Online Universal Resource for Clones and ESTs

More...
SOURCEi
Search...

Gene expression databases

BgeeiENSG00000124788 Expressed in caudate nucleus and 243 other tissues
ExpressionAtlasiP54253 baseline and differential
GenevisibleiP54253 HS

Family and domain databases

InterProiView protein in InterPro
IPR003652 Ataxin_AXH_dom
IPR036096 Ataxin_AXH_dom_sf
IPR040172 ATXN1
IPR020997 Capicua_tscrpt_rep_mod
PANTHERiPTHR13392:SF5 PTHR13392:SF5, 1 hit
PfamiView protein in Pfam
PF12547 ATXN-1_C, 1 hit
PF08517 AXH, 1 hit
SMARTiView protein in SMART
SM00536 AXH, 1 hit
SUPFAMiSSF102031 SSF102031, 1 hit
PROSITEiView protein in PROSITE
PS51148 AXH, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiATX1_HUMAN
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P54253
Secondary accession number(s): Q17S02, Q9UJG2, Q9Y4J1
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 1, 1996
Last sequence update: September 23, 2008
Last modified: April 22, 2020
This is version 195 of the entry and version 2 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Human entries with polymorphisms or disease mutations
    List of human entries with polymorphisms or disease mutations
  3. Human polymorphisms and disease mutations
    Index of human polymorphisms and disease mutations
  4. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  5. Human chromosome 6
    Human chromosome 6: entries, gene names and cross-references to MIM
  6. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
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