ARID1B

Gene Information

Official Symbol: ARID1B
Official Name: AT-rich interaction domain 1B
Aliases and Previous Symbols: N/A
Entrez ID: 57492
UniProt: Q8NFD5
Interactions: BioGRID
PubMed articles: Open PubMed
OMIM: Open OMIM

Function Summary

Entrez Summary: This locus encodes an AT-rich DNA interacting domain-containing protein. The encoded protein is a component of the SWI/SNF chromatin remodeling complex and may play a role in cell-cycle activation. The protein encoded by this locus is similar to AT-rich interactive domain-containing protein 1A. These two proteins function as alternative, mutually exclusive ARID-subunits of the SWI/SNF complex. The associated complexes play opposing roles. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2016].
UniProt Summary: Involved in transcriptional activation and repression of select genes by chromatin remodeling (alteration of DNA-nucleosome topology). Component of SWI/SNF chromatin remodeling complexes that carry out key enzymatic activities, changing chromatin structure by altering DNA-histone contacts within a nucleosome in an ATP-dependent manner. 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 postmitotic 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 postmitotic 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 (PubMed:14982958, PubMed:15170388). {ECO:0000250|UniProtKB:E9Q4N7, ECO:0000269|PubMed:14982958, ECO:0000269|PubMed:15170388, ECO:0000303|PubMed:12672490, ECO:0000303|PubMed:22952240, ECO:0000303|PubMed:26601204}.

Pfam Domains GO Terms

CRISPR Data

Compound Hit Most Correlated Genes in Chemogenomics Tissues where Essential in the Avana Dataset (DepMap 20Q1)

Screen	Score
BML-284 0.09μM R08 exp460	-1.94
HMS-I1 1μM R01 exp46	-1.83
Cincreasin 100μM R08 exp473	1.71

Global Fraction of Cell Lines Where Essential: 5/726

Tissue	Fraction Of Cell Lines Where Essential
1290807.0	0/1
909776.0	0/1
bile duct	0/28
blood	0/28
bone	0/25
breast	0/33
central nervous system	0/56
cervix	0/4
colorectal	0/17
esophagus	0/13
fibroblast	0/1
gastric	1/15
kidney	0/21
liver	1/20
lung	0/75
lymphocyte	1/14
ovary	0/26
pancreas	0/24
peripheral nervous system	0/16
plasma cell	0/15
prostate	0/1
skin	0/24
soft tissue	0/7
thyroid	0/2
upper aerodigestive	0/22
urinary tract	1/29
uterus	1/5

Essentiality in NALM6

Essentiality Rank: 8231
Expression level (log2 read counts): 6.8

Expression Distribution