Cell Signaling Technology

Product Pathways - Nuclear Receptor Signaling

Phospho-Progesterone Receptor (Ser345) Antibody #12783

Nuclear Hormone Receptors   PGR-A   PGR-B   PGRA   PGRB   PR-A   PR-B   PRA   PRB   Steroid Receptors  

No. Size Price
12783S 100 µl ( 10 western blots ) ¥4,050.00 现货查询 购买询价 防伪查询
12783 carrier free & custom formulation / quantityemail request
Applications Dilution Species-Reactivity Sensitivity MW (kDa) Isotype
W 1:1000 Human, Endogenous 90 (PR-A), 118 (PR-B) Rabbit

Species cross-reactivity is determined by western blot.

Applications Key: W=Western Blotting,

Specificity / Sensitivity

Phospho-Progesterone Receptor (Ser345) Antibody recognizes endogenous levels of progesterone receptor B (PR-B) and progesterone receptor A (PR-A) proteins only when phosphorylated at Ser345 and Ser181, respectively. This antibody does not cross-react with other progesterone receptor family members.只有当丝氨酸(345和181位)磷酸化时,Phospho-Progesterone Receptor (Ser345) Antibody能够分别识别内源性水平的孕酮受体B(PR-B)和孕酮受体A(PR-A)蛋白。该抗体不与其他孕酮受体家族成员发生交叉反应。

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser345 of human progesterone receptor B (PR-B) protein. Antibodies are purified by protein A and peptide affinity chromatography.该多克隆抗体通过用合成磷酸肽免疫动物制备,该合成磷酸肽是人孕酮受体蛋白B(PR-B)蛋白丝氨酸(345位)附近的残基。抗体由蛋白A和肽亲和层析纯化。

Western Blotting

Western Blotting

Western blot analysis of extracts from T-47D cells grown for 48 hr in phenol red-free medium supplemented with 5% charcoal-stripped FBS, untreated (-) or promegestone (R5020)-treated (100 nM, 1 hr; +), using Phospho-Progesterone Receptor (Ser345) Antibody (upper) or Progesterone Receptor A/B (D8Q2J) XP® Rabbit mAb #8757 (lower).Western blot方法检测T-47D细胞提取物,细胞在不含酚红,含5%活性炭/葡聚糖处理的FBS中培养48小时,之后细胞不处理(-)或普美孕酮(R5020)处理(100 nM, 1 hr; +),使用的抗体为Phospho-Progesterone Receptor (Ser345) Antibody (上图) 或Progesterone Receptor A/B (D8Q2J) XP® Rabbit mAb #8757 (下图).


Human progesterone receptor (PR) is expressed as two forms: the full length PR-B and the short form PR-A. PR-A lacks the first 164 amino acid residues of PR-B (1,2). Both PR-A and PR-B are ligand activated, but differ in their relative ability to activate target gene transcription (3,4). The activity of PR is regulated by phosphorylation; at least seven serine residues are phosphorylated in its amino-terminal domain. Three sites (Ser81, Ser102, and Ser162) are unique to full length PR-B, while other sites (Ser190, Ser294, Ser345, and Ser400) are shared by both isoforms (5). Phosphorylation of PR-B at Ser190 (equivalent to Ser26 of PR-A) is catalyzed by CDK2 (6). Mutation of Ser190 results in decreased activity of PR (7), suggesting that the phosphorylation at Ser190 may be critical to its biological function.人孕酮受体(PR)表现为两种形式:全长的孕酮受体B和短的孕酮受体A。PR A缺少PR B的第164个氨基酸残基(1,2)。PR A和PR B都是配体激活,但其激活靶基因转录的相对能力是不同的(3,4)。PR的活性受磷酸化调节。在其氨基末端区域,至少有七个丝氨酸残基被磷酸化。丝氨酸三个位点(81,102,162位)是全长PR特有的,而其他丝氨酸位点(190,294,345和400位)是两个亚型所共有的(5)。PR B丝氨酸(190位)(相当于PR A丝氨酸(26位))的磷酸化是由CDK2催化的(6)。丝氨酸(190位)的突变导致PR活性降低(7),这表明丝氨酸(190位)的磷酸化对其生物功能来说是至关重要的。

Research studies have demonstrated ligand-dependent phosphorylation of PR-B at Ser345 is catalyzed by MAPK and plays an important role in mediating the proliferation of breast cancer cells. Investigators have shown that Ser345-phosphorylated PR-B associates with Sp1 to regulate EGFR and p21 transcription (8).研究表明PR-B丝氨酸(345位)的配体依赖性磷酸化由MAPK催化,在介导乳腺癌细胞的增殖中起着重要的作用。调查表明,PR-B 丝氨酸(345位)的磷酸化与Sp1有关,调控EGFR和p21的转录(8)。

  1. Evans, R.M. (1988) Science 240, 889-895.
  2. Kastner, P. et al. (1990) EMBO J. 112, 1603-1614.
  3. Giangrande, P.H. et al. (2000) Mol. Cell. Biol. 20, 3102-3115.
  4. Wen, D.X. et al. (1994) Mol. Cell. Biol. 14, 8356-8364.
  5. Clemm, D.L. et al. (2000) Mol. Endocrinol. 14, 52-65.
  6. Zhang, Y. et al. (1997) Mol. Endocrinol. 11, 823-832.
  7. Takimoto, G.S. et al. (1996) J. Biol. Chem. 271, 13308-13316.
  8. Faivre, E.J. et al. (2008) Mol Endocrinol 22, 823-37.

Application References

Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know!


Companion Products

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.

用户评论 --- 共 0


我要参与评论 :