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MGP005632

UniProt Annotations

Entry Information
Gene NameAT rich interactive domain 1B (SWI1-like)
Protein EntryARI1B_HUMAN
UniProt IDQ8NFD5
SpeciesHuman
Comments
Comment typeDescription
Alternative ProductsEvent=Alternative splicing; Named isoforms=4; Name=1; IsoId=Q8NFD5-1; Sequence=Displayed; Name=2; IsoId=Q8NFD5-2; Sequence=VSP_015226; Name=3; IsoId=Q8NFD5-3; Sequence=VSP_015227; Name=4; IsoId=Q8NFD5-4; Sequence=VSP_040800;
CautionIt is uncertain whether Met-1 or Met-59 is the initiator. {ECO:0000305}.
DiseaseMental retardation, autosomal dominant 12 (MRD12) [MIM:614562]: A disorder characterized by significantly below average general intellectual functioning associated with impairments in adaptive behavior and manifested during the developmental period. MRD12 patients present with moderate to severe psychomotor retardation, and most show evidence of muscular hypotonia. In many patients, expressive speech is more severely affected than receptive function. Additional common findings include short stature, abnormal head shape and low-set, posteriorly rotated, and abnormally shaped ears, downslanting palpebral fissures, a bulbous nasal tip, a thin upper lip, minor teeth anomalies, and brachydactyly or single palmar creases. Autistic features are uncommon. {ECO:0000269|PubMed:22405089, ECO:0000269|PubMed:22426308, ECO:0000269|PubMed:22426309}. Note=The disease is caused by mutations affecting the gene represented in this entry.
FunctionInvolved in transcriptional activation and repression of select genes by chromatin remodeling (alteration of DNA-nucleosome topology). Belongs to the neural progenitors-specific chromatin remodeling complex (npBAF complex) and the neuron-specific chromatin remodeling complex (nBAF complex). During neural development a switch from a stem/progenitor to a post-mitotic chromatin remodeling mechanism occurs as neurons exit the cell cycle and become committed to their adult state. The transition from proliferating neural stem/progenitor cells to post-mitotic neurons requires a switch in subunit composition of the npBAF and nBAF complexes. As neural progenitors exit mitosis and differentiate into neurons, npBAF complexes which contain ACTL6A/BAF53A and PHF10/BAF45A, are exchanged for homologous alternative ACTL6B/BAF53B and DPF1/BAF45B or DPF3/BAF45C subunits in neuron-specific complexes (nBAF). The npBAF complex is essential for the self-renewal/proliferative capacity of the multipotent neural stem cells. The nBAF complex along with CREST plays a role regulating the activity of genes essential for dendrite growth (By similarity). Binds DNA non-specifically. {ECO:0000250}.
InteractionP51531:SMARCA2; NbExp=3; IntAct=EBI-679921, EBI-679562; P51532:SMARCA4; NbExp=3; IntAct=EBI-679921, EBI-302489;
PolymorphismThe poly-Gln region is polymorphic and the number of Gln varies in the population (from 17 to 23).
Sequence CautionSequence=AAL76077.1; Type=Erroneous initiation; Note=Translation N-terminally extended.; Evidence={ECO:0000305}; Sequence=AAN70985.1; Type=Frameshift; Positions=857, 863; Evidence={ECO:0000305}; Sequence=CAA69592.1; Type=Frameshift; Positions=132; Evidence={ECO:0000305};
SimilarityContains 1 ARID domain. {ECO:0000255|PROSITE- ProRule:PRU00355}.
Subcellular LocationNucleus {ECO:0000255|PROSITE- ProRule:PRU00355, ECO:0000269|PubMed:11988099}.
SubunitComponent of SWI/SNF chromatin remodeling complexes, in some of which it can be mutually exclusive with ARID1A/BAF250A. Component of the BAF (SWI/SNF-A) complex, which includes at least actin (ACTB), ARID1A, ARID1B/BAF250, SMARCA2, SMARCA4/BRG1/BAF190A, ACTL6A/BAF53, ACTL6B/BAF53B, SMARCE1/BAF57, SMARCC1/BAF155, SMARCC2/BAF170, SMARCB1/SNF5/INI1, and one or more of SMARCD1/BAF60A, SMARCD2/BAF60B, or SMARCD3/BAF60C. In muscle cells, the BAF complex also contains DPF3. Component of the SWI/SNF-B (PBAF) complex, at least composed of SMARCA4/BRG1/BAF190A, SMARCB1/BAF47, ACTL6A/BAF53A or ACTL6B/BAF53B, SMARCE1/BAF57, SMARCD1/BAF60A, SMARCD2/BAF60B, perhaps SMARCD3/BAF60C, SMARCC1/BAF155, SMARCC2/BAF170, PB1/BAF180, ARID2/BAF200, ARID1A/BAF250A or ARID1B/BAF250B and actin. Component of a SWI/SNF-like EPAFb complex, at least composed of SMARCA4/BRG1/BAF190A, SMARCB1/BAF47, ACTL6A/BAF53A, SMARCE1/BAF57, SMARCD1/BAF60A, SMARCD2/BAF60B, SMARCC1/BAF155, SMARCC2/BAF170, ARID1B/BAF250B, MLLT1/ENL and actin. Component of a SWI/SNF-like complex containing ARID1A/BAF250A and ARID1B/BAF250B. Interacts through its C-terminus with SMARCA2/BRM/BAF190B and SMARCA4/BRG1/BAF190A. Interacts with SMARCC1/BAF155. Component of neural progenitors-specific chromatin remodeling complex (npBAF complex) composed of at least, ARID1A/BAF250A or ARID1B/BAF250B, SMARCD1/BAF60A, SMARCD3/BAF60C, SMARCA2/BRM/BAF190B, SMARCA4/BRG1/BAF190A, SMARCB1/BAF47, SMARCC1/BAF155, SMARCE1/BAF57, SMARCC2/BAF170, PHF10/BAF45A, ACTL6A/BAF53A and actin. Component of neuron-specific chromatin remodeling complex (nBAF complex) composed of at least, ARID1A/BAF250A or ARID1B/BAF250B, SMARCD1/BAF60A, SMARCD3/BAF60C, SMARCA2/BRM/BAF190B, SMARCA4/BRG1/BAF190A, SMARCB1/BAF47, SMARCC1/BAF155, SMARCE1/BAF57, SMARCC2/BAF170, DPF1/BAF45B, DPF3/BAF45C, ACTL6B/BAF53B and actin (By similarity). {ECO:0000250}.
Tissue SpecificityWidely expressed with high levels in heart, skeletal muscle and kidney. {ECO:0000269|PubMed:11988099, ECO:0000269|PubMed:12200431, ECO:0000269|PubMed:12665591}.
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