Mouse anti-Human, Mouse BRG1 Monoclonal Antibody | anti-SMARCA4 antibody

BRG1 Antibody

Cat. Num. AAA9215563

• Gene Names: SMARCA4; BRG1; SNF2; SWI2; MRD16; RTPS2; BAF190; SNF2L4; SNF2LB; hSNF2b; BAF190A
• Reactivity: Human, Mouse
• Applications: Western Blot, Immunocytochemistry, Immunoprecipitation
• Synonyms: BRG1; Monoclonal Antibody; BRG1 Antibody; Purified Mouse Monoclonal Antibody (Mab); ATP dependent helicase SMARCA4; ATP-dependent helicase SMARCA4; BAF 190; BAF190; BAF190A; Brahma protein homolog 1; Brahma protein like 1; BRG1 associated factor 190A; BRG1 protein; BRG1-associated factor 190A; BRM/SWI2 related gene 1; Global transcription activator homologous sequence; global transcription activator snf2l4; Homeotic gene regulator; hSNF2b; Mitotic growth and transcription activator; MRD16; Nuclear protein GRB1; Protein brahma homolog 1; Protein BRG-1; Protein BRG1; RTPS2; SMARC A4; SMARCA4; SMCA4_HUMAN; SNF2; SNF2 beta; SNF2 like 4; SNF2-beta; 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; SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily A member 4; SWI2; Transcription activator BRG1; anti-SMARCA4 antibody

• Host: Mouse
• Reactivity: Human, Mouse
• Clonality: Monoclonal
• Isotype: IgG1
• Form/Format: Purified mouse monoclonal antibody in PBS(pH 7.4) containing with 0.02% sodium azide and 50% glycerol.
• Sequence Length: 1647

• Applicable Applications for anti-SMARCA4 antibody: Western Blot (WB), Immunocytochemistry (ICC), Immunoprecipitation (IP)
• Application Notes: WB ~~ 1:1000; ICC ~~ 1:50; IP ~~ 1:500
• Calculated MW: 220 kDa
• Function: 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. Component of the CREST-BRG1 complex, a multiprotein complex that regulates promoter activation by orchestrating the calcium-dependent release of a repressor complex and the recruitment of an activator complex. In resting neurons, transcription of the c-FOS promoter is inhibited by SMARCA4- dependent recruitment of a phospho-RB1-HDAC repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex. At the same time, there is increased recruitment of CREBBP to the promoter by a CREST- dependent mechanism, which leads to transcriptional activation. The CREST-BRG1 complex also binds to the NR2B promoter, and activity-dependent induction of NR2B expression involves the release of HDAC1 and recruitment of CREBBP. 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. SMARCA4/BAF190A may promote neural stem cell self-renewal/proliferation by enhancing Notch-dependent proliferative signals, while concurrently making the neural stem cell insensitive to SHH-dependent differentiating cues (By similarity). Acts as a corepressor of ZEB1 to regulate E-cadherin transcription and is required for induction of epithelial- mesenchymal transition (EMT) by ZEB1. Binds via DLX1 to enhancers located in the intergenic region between DLX5 and DLX6 and this binding is stabilized by the long non-coding RNA (lncRNA) Evf2 (By similarity). Binds to RNA in a promiscuous manner (By similarity). Binding to RNAs including lncRNA Evf2 leads to inhibition of SMARCA4 ATPase and chromatin remodeling activities (By similarity).
• Cellular location: Nucleus {ECO:0000255|PROSITE- ProRule:PRU00549, ECO:0000269|PubMed:20418909}. Note=Colocalizes with long non-coding RNA Evf2 in nuclear RNA clouds {ECO:0000250|UniProtKB:Q3TKT4}
• Tissue location: Colocalizes with ZEB1 in E-cadherin-negative cells from established lines, and stroma of normal colon as well as in de-differentiated epithelial cells at the invasion front of colorectal carcinomas (at protein level)
• Preparation and Storage: Maintain refrigerated at 2-8 degree C for up to 6 months. For long term storage store at -20 degree C in small aliquots to prevent freeze-thaw cycles.

Western Blot (WB)

(Western blot detection of BRG1 in Hela NE,F9 and K562 cell lysates using BRG1 mouse mAb (1:1000 diluted).Predicted band size:220KDa.Observed band size:220KDa.)

Immunocytochemistry (ICC)

(Immunofluorescent analysis of Hela cells fixed with 4% Paraformaldehyde and using anti-BRG1 mouse mAb (dilution 1:50). DAPI was used to stain nucleus(blue).)

Immunoprecipitation (IP)

(Immunoprecipitation analysis of K562 cell lysates using BRG1 mouse mAb (201025).)

Related Product Information for anti-SMARCA4 antibody

Transcriptional coactivator cooperating with nuclear hormone receptors to potentiate transcriptional activation. Component of the CREST-BRG1 complex, a multiprotein complex that regulates promoter activation by orchestrating a calcium-dependent release of a repressor complex and a recruitment of an activator complex. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex. At the same time, there is increased recruitment of CREBBP to the promoter by a CREST-dependent mechanism, which leads to transcriptional activation. The CREST-BRG1 complex also binds to the NR2B promoter, and activity-dependent induction of NR2B expression involves a release of HDAC1 and recruitment of CREBBP. 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. SMARCA4/BAF190A may promote neural stem cell self- renewal/proliferation by enhancing Notch-dependent proliferative signals, while concurrently making the neural stem cell insensitive to SHH-dependent differentiating cues (By similarity). Also involved in vitamin D-coupled transcription regulation via its association with the WINAC complex, a chromatin-remodeling complex recruited by vitamin D receptor (VDR), which is required for the ligand-bound VDR-mediated transrepression of the CYP27B1 gene. Acts as a corepressor of ZEB1 to regulate E-cadherin transcription and is required for induction of epithelial- mesenchymal transition (EMT) by ZEB1.

Product Categories/Family for anti-SMARCA4 antibody

Cancer; Neuroscience; Stem cells

References

Khavari P.A.,et al.Nature 366:170-174(1993). Khavari P.A.,et al.Submitted (JUN-1995) to the EMBL/GenBank/DDBJ databases. Chiba H.,et al.Nucleic Acids Res. 22:1815-1820(1994). Wong A.K.C.,et al.Cancer Res. 60:6171-6177(2000). Medina P.P.,et al.Hum. Mutat. 29:617-622(2008).

NCBI and Uniprot Product Information

• NCBI GI #: 192807312
• NCBI GeneID: 6597
• NCBI Accession #: NP_001122316.1
• NCBI GenBank Nucleotide #: NM_001128844.1
• UniProt Accession #: P51532; O95052; Q9HBD3; B1A8Z4; B1A8Z5; B1A8Z6; B1A8Z7; E9PBR8
• Molecular Weight: 220 KDa
• NCBI Official Full Name: transcription activator BRG1 isoform B
• NCBI Official Synonym Full Names: SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4
• NCBI Official Symbol: SMARCA4
• NCBI Official Synonym Symbols: BRG1; SNF2; SWI2; MRD16; RTPS2; BAF190; SNF2L4; SNF2LB; hSNF2b; BAF190A
• NCBI Protein Information: transcription activator BRG1
• UniProt Protein Name: Transcription activator BRG1
• Protein Family: Transcription activator
• UniProt Gene Name: SMARCA4
• UniProt Synonym Gene Names: BAF190A; BRG1; SNF2B; SNF2L4; BAF190A
• UniProt Entry Name: SMCA4_HUMAN

NCBI Description

The protein encoded by this gene is a member of the SWI/SNF family of proteins and is similar to the brahma protein of Drosophila. Members of this family have helicase and ATPase activities and are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein is part of the large ATP-dependent chromatin remodeling complex SNF/SWI, which is required for transcriptional activation of genes normally repressed by chromatin. In addition, this protein can bind BRCA1, as well as regulate the expression of the tumorigenic protein CD44. Mutations in this gene cause rhabdoid tumor predisposition syndrome type 2. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2012]

Uniprot Description

SMARCA4: a member of the SWI/SNF nucleosome remodeling complex with ATP-dependent DNA helicase activity. SWI/SNF complexes are required for mammalian development and are mutated in ~20% of all human primary tumors. Mutated in 35% (13/37) of NSCLC and 5% (1/19) of SCLC human lung cancer cell lines . A component of the CREST-BRG1 complex, a multiprotein complex that regulates promoter activation by orchestrating a calcium-dependent release of a repressor complex and a recruitment of an activator complex. Belongs to the neural progenitor-specific chromatin remodeling complex (npBAF complex) and the neuron-specific chromatin remodeling complex (nBAF complex). Component of the BAF53 complex which acetylates histone H4 and H2A within nucleosomes. Transcriptional coactivator of nuclear hormone receptors. Acts as a corepressor of ZEB1 to regulate E-cadherin transcription, and is required for induction of epithelial-mesenchymal transition (EMT) by ZEB1. Can bind BRCA1, as well as regulate the expression of the tumorigenic protein CD44. SMARCA4, in consort with ZEB1, represses the transcription of E-cadherin and promotes the epithelial-to-mesenchymal transisition (EMT). SMARCA4 is required for stem cell maintenance in the mouse intestinal epithelium. Its loss inhibits aberrant Wnt-signalling and prevents tumorigenesis in the mouse small intestine. SMARCA4 mutations are the cause of a familial cancer syndrome predisposing to renal or extrarenal malignant rhabdoid tumors and to a variety of tumors of the central nervous system, including choroid plexus carcinoma, medulloblastoma, and central primitive neuroectodermal tumors. Rhabdoid tumors are the most aggressive and lethal malignancies occurring in early childhood. Belongs to the SNF2/RAD54 helicase family. The human protein includes 5 isoforms produced by alternative splicing.

Protein type: Tumor suppressor; EC 3.6.1.-; Transcription, coactivator/corepressor; Cell cycle regulation; Nuclear receptor co-regulator; EC 3.6.4.-; Helicase

Chromosomal Location of Human Ortholog: 19p13.2

Cellular Component: nucleoplasm; SWI/SNF complex; extracellular space; protein complex; membrane; nuclear chromatin; nucleolus; nucleus

Molecular Function: DNA-dependent ATPase activity; protein binding; nucleosomal DNA binding; androgen receptor binding; Tat protein binding; p53 binding; transcription coactivator activity; protein N-terminus binding; transcription corepressor activity; helicase activity; ATP binding

Biological Process: nervous system development; establishment and/or maintenance of chromatin architecture; transcription, DNA-dependent; negative regulation of transcription from RNA polymerase II promoter, mitotic; positive regulation of transcription, DNA-dependent; negative regulation of transcription from RNA polymerase II promoter; chromatin remodeling; regulation of transcription from RNA polymerase II promoter; nucleosome disassembly; ATP-dependent chromatin remodeling; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription factor activity; negative regulation of cell growth; negative regulation of transcription, DNA-dependent; positive regulation of Wnt receptor signaling pathway; spermatid development

Disease: Mental Retardation, Autosomal Dominant 16; Rhabdoid Tumor Predisposition Syndrome 2