Rabbit Polyclonal Antibody to Retinoblastoma (Ab-608)

包装: 1G|100G|500G|1KG|100KG

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别名:P105-RB; PP105; PP110; RB-1; RB1
应用:WB
反应种属:Human
规格：50μl/100μl

Description
Key regulator of entry into cell division that acts as a tumor suppressor. Promotes G0-G1 transition when phosphorylated by CDK3/cyclin-C. Acts as a transcription repressor of E2F1 target genes. The underphosphorylated, active form of RB1 interacts with E2F1 and represses its transcription activity, leading to cell cycle arrest. Directly involved in heterochromatin formation by maintaining overall chromatin structure and, in particular, that of constitutive heterochromatin by stabilizing histone methylation. Recruits and targets histone methyltransferases SUV39H1, SUV420H1 and SUV420H2, leading to epigenetic transcriptional repression. Controls histone H4 ‘Lys-20’ trimethylation. Inhibits the intrinsic kinase activity of TAF1. Mediates transcriptional repression by SMARCA4/BRG1 by recruiting a histone deacetylase (HDAC) complex to the c-FOS promoter. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex By similarity. In case of viral infections, interactions with SV40 large T antigen, HPV E7 protein or adenovirus E1A protein induce the disassembly of RB1-E2F1 complex thereby disrupting RB1’s activity.Lee W.-H., Nature 329:642-645(1987).Lee W.-H., Science 235:1394-1399(1987).Friend S.H., Proc. Natl. Acad. Sci. U.S.A. 84:9059-9063(1987).

Description

Key regulator of entry into cell division that acts as a tumor suppressor. Promotes G0-G1 transition when phosphorylated by CDK3/cyclin-C. Acts as a transcription repressor of E2F1 target genes. The underphosphorylated, active form of RB1 interacts with E2F1 and represses its transcription activity, leading to cell cycle arrest. Directly involved in heterochromatin formation by maintaining overall chromatin structure and, in particular, that of constitutive heterochromatin by stabilizing histone methylation. Recruits and targets histone methyltransferases SUV39H1, SUV420H1 and SUV420H2, leading to epigenetic transcriptional repression. Controls histone H4 ‘Lys-20’ trimethylation. Inhibits the intrinsic kinase activity of TAF1. Mediates transcriptional repression by SMARCA4/BRG1 by recruiting a histone deacetylase (HDAC) complex to the c-FOS promoter. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex By similarity. In case of viral infections, interactions with SV40 large T antigen, HPV E7 protein or adenovirus E1A protein induce the disassembly of RB1-E2F1 complex thereby disrupting RB1’s activity.Lee W.-H., Nature 329:642-645(1987).Lee W.-H., Science 235:1394-1399(1987).Friend S.H., Proc. Natl. Acad. Sci. U.S.A. 84:9059-9063(1987).

Specification
Aliases	P105-RB; PP105; PP110; RB-1; RB1
Entrez GeneID	5925;
Swissprot	P06400
WB Predicted band size	110kDa
Storage	Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze/thaw cycles.
Species Reactivity	Human
Immunogen	Synthesized non-phosphopeptide derived from human Retinoblastoma around the phosphorylation site of serine 608 (Y-L-S(p)-P-V).
Formulation	Rabbit IgG in phosphate buffered saline (without Mg2+ and Ca2+), pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.

Application
WB	1/500-1/3000

	Western blot analysis of extracts from Jurkat cells, treated with PMA (125ng/ml, 30mins), using Retinoblastoma (Ab-608) antibody P41703.
	Western blot analysis of extracts from JK cells (Lane 2), using Retinoblastoma (Ab-608) antiobdy P41703. The lane on the left is treated with synthesized peptide.