Description
Protocol
Available protocols: ELISA+
Specificity / Sensitivity
PathScan
Species Reactivity: Human, Mouse, Monkey
Background
The modulation of chromatin structure is an essential component in the regulation of transcriptional activation and repression. Modifications can be made by at least two evolutionarily conserved strategies, through the disruption of histone-DNA contacts by ATP-dependent chromatin remodelers, or by histone tail modifications including methylation and acetylation. One of the four classes of ATP-dependent histone remodelers is the SWI/SNF complex, the central catalytic subunit of which is Brg1 or the highly related protein hBRM (1). This SWI/SNF complex contains varying subunits but its association with either Brg1 or hBRM remains constant (1). SWI/SNF complexes have been shown to regulate gene activation, cell growth, the cell cycle, and differentiation (1). Brg1/hBRM have been shown to regulate transcription through enhancing transcriptional activation of glucocorticoid receptors (2). Although usually associated with transcriptional activation, Brg1/hBRM have also been found in complexes associated with transcriptional repression, including HDACs, Rb, and Tif1β (3-5). Brg1/hBRM plays a vital role in the regulation of gene transcription during early mammalian embryogenesis. In addition, Brg1/hBRM also plays a role as a tumor suppressor and Brg1 is mutated in several tumor cell lines (6-8).
Alternate Names
ATP-dependent helicase SMARCA4; BAF190; BAF190A; brahma protein-like 1; BRG1; BRG1-associated factor 190A; BRM/SWI2-related gene 1; CSS4; FLJ39786; global transcription activator homologous sequence; homeotic gene regulator; hSNF2b; Mitotic growth and transcription activator; MRD16; nuclear protein GRB1; Protein brahma homolog 1; Protein BRG-1; RTPS2; SMARCA4; SMCA4; SNF2; SNF2-beta; SNF2-like 4; SNF2B; SNF2L4; SNF2LB; sucrose nonfermenting-like 4; SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4; SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4; SWI2; Transcription activator BRG1
