Cell Signaling Technology

Product Pathways - Cell Cycle / Checkpoint

Phospho-Rb (Ser608) Antibody #2181

P105-RB   PP105   PP110   RB-1   RB1   Retinoblastoma-associated protein  

No. Size Price
2181S 100 µl ( 10 western blots ) ¥3,900.00 现货查询 购买询价
2181T 20 µl ( 2 western blots ) ¥1,300.00 现货查询 购买询价
2181 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human,Rat,Monkey, Endogenous 110 Rabbit
IP 1:100

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting, IP=Immunoprecipitation,

Homology

Species predicted to react based on 100% sequence homology: Dog,

Specificity / Sensitivity

Phospho-Rb (Ser608) Antibody detects endogenous levels of Rb only when phosphorylated at serine 608.Phospho-Rb (Ser608) Antibody能够检测内源性丝氨酸(608位)磷酸化的Rb蛋白。

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser608 of human Rb. Antibodies are purified by protein A and peptide affinity chromatography.该多克隆抗体是由合成的人源的针对Rb蛋白丝氨酸(608位)的磷酸化肽段免疫动物,采用蛋白A和多肽亲和层析技术纯化生产的。

Western Blotting

Western Blotting

Western blot analysis of extracts from HeLa cells treated with lambda Phosphatase NEB #P0753 (10,000 units/ml, 1 h) or calyculin A #9902 (100 nM, 10 min) using Phospho-Rb (Ser608) Antibody (upper) or Rb (4H1) Mouse mAb #9309 (lower).Western blot方法检测Hela细胞提取物,分为lambda磷酸酶(10,000 units/ml, NEB #P0753)处理1小时组或calyculin A #9902 (100 nM)处理10分钟组,使用的抗体为Phospho-Rb (Ser608) Antibody (上图)和 Rb (4H1) Mouse mAb #9309 (下图)。

Background

The retinoblastoma tumor suppressor protein, Rb, regulates cell proliferation by controlling progression through the restriction point within the G1-phase of the cell cycle (1). Rb has three functionally distinct binding domains and interacts with critical regulatory proteins including the E2F family of transcription factors, c-Abl tyrosine kinase and proteins with a conserved LXCXE motif (2-4). Cell cycle-dependent phosphorylation by a CDK inhibits Rb target binding and allows cell cycle progression (5). Rb inactivation and subsequent cell cycle progression likely requires an initial phosphorylation by cyclin D-CDK4/6 followed by cyclin E-CDK2 phosphorylation (6). Specificity of different CDK/cyclin complexes has been observed in vitro (6-8) and cyclin D1 is required for Ser780 phosphorylation in vivo (9). 视网膜母细胞瘤肿瘤抑制蛋白Rb通过控制细胞周期的G1期限制点的进程来调控细胞增殖(1)。Rb具有3个功能特异的结合结构域并能够与转录因子家族的关键调节蛋白E2F、c-Abl酪氨酸激酶和具有保守的LXCXE模体蛋白相互作用(2-4)。CDK介导的细胞周期依赖性磷酸化能够抑制Rb靶向结合并允许细胞周期进程(5)。Rb的失活和随后的细胞周期进程似乎需要伴随周期蛋白E-CDK2磷酸化的cyclin D-CDK4/6初始磷酸化(6)。离体已经观察到不同CDK/cyclin复合物的特异性(6-8),而且周期蛋白D1为第780位丝氨酸在体磷酸化所必需(9)。

  1. Sherr, C.J. (1996) Science 274, 1672-7.
  2. Nevins, J.R. (1992) Science 258, 424-9.
  3. Welch, P.J. and Wang, J.Y. (1993) Cell 75, 779-90.
  4. Hu, Q.J. et al. (1990) EMBO J 9, 1147-55.
  5. Knudsen, E.S. and Wang, J.Y. (1997) Mol Cell Biol 17, 5771-83.
  6. Lundberg, A.S. and Weinberg, R.A. (1998) Mol Cell Biol 18, 753-61.
  7. Connell-Crowley, L. et al. (1997) Mol Biol Cell 8, 287-301.
  8. Kitagawa, M. et al. (1996) EMBO J 15, 7060-9.
  9. Geng, Y. et al. (2001) Proc Natl Acad Sci USA 98, 194-9.

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For Research Use Only. Not For Use In Diagnostic Procedures.

Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.

Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.

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