| 货号 | 14994T |
| 同种亚型 | Rabbit IgG |
| 反应种属 | Human/Mouse/Rat/Monkey |
| 来源宿主 | Rabbit |
| 应用 | W/IP/IHC-P/IF-IC/F/ChIP |
| 目标/特异性 | Stat1 (D1K9Y) Rabbit mAb recognizes endogenous levels of total Stat1 protein. This antibody also cross-reacts with an unidentified protein of 150 kDa. |
| 使用方法 | WB(1:1000) IP (1:100) IHC-P (1:3200) F (1:100) IF-IC (1:400) ChIP (1:50) |
| 供应商 | CST |
| 灵敏度 | Endogenous |
| 背景 | The Stat1 transcription factor is activated in response to a large number of ligands (1) and is essential for responsiveness to IFN-α and IFN-γ (2,3). Phosphorylation of Stat1 at Tyr701 induces Stat1 dimerization, nuclear translocation, and DNA binding (4). Stat1 protein exists as a pair of isoforms, Stat1α (91 kDa) and the splice variant Stat1β (84 kDa). In most cells, both isoforms are activated by IFN-α, but only Stat1α is activated by IFN-γ. The inappropriate activation of Stat1 occurs in many tumors (5). In addition to tyrosine phosphorylation, Stat1 is also phosphorylated at Ser727 through a p38 mitogen-activated protein kinase (MAPK)-dependent pathway in response to IFN-α and other cellular stresses (6). Serine phosphorylation may be required for the maximal induction of Stat1-mediated gene activation. |
| 存放说明 | -20C |
| 计算分子量 | 84, 91 |
| 参考文献 | 1 . Heim, M.H. (2001) J Recept Signal Transduct Res 19, 75-120. 2 . Durbin, J.E. et al. (1996) Cell 84, 443-50. 3 . Meraz, M.A. et al. (1996) Cell 84, 431-42. 4 . Ihle, J.N. et al. (1994) Trends Biochem Sci 19, 222-7. 5 . Frank, D.A. (1999) Mol. Med. 5, 432-456. 6 . Wen, Z. et al. (1995) Cell 82, 241-50. |
Flow cytometric analysis of ACHN cells using Stat1 (D1K9Y) Rabbit mAb (blue) compared to concentration-matched Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (red). Anti-rabbit IgG (H+L), F(ab)2 Fragment (Alexa Fluor® 488 Conjugate) #4412 was used as secondary antibody. | |
Confocal immunofluorescent analysis of HeLa cells, serum-starved overnight (left) or treated with Human Interferon-α1 (hIFN-α1) #8927 (1,000 units/ml, 30 min; right), using Stat1 (D1K9Y) Rabbit mAb (green) and β-Actin (8H10D10) Mouse mAb #3700 (red). | |
Chromatin immunoprecipitations were performed with cross-linked chromatin from 4 x 106 HT-1080 cells treated with Human Interferon-γ (hIFN-γ) #8901 (50 ng/ml, 30 min) and either 10 μl of Stat1 (D1K9Y) Rabbit mAb or 2 μl of Normal Rabbit IgG #2729 using SimpleChIP® Enzymatic Chromatin IP Kit (Magnetic Beads) #9003. The enriched DNA was quantified by real-time PCR using human IRF-1 promoter primers, SimpleChIP® Human TAP1 Promoter Primers #5148, and SimpleChIP® Human α Satellite Repeat Primers #4486. The amount of immunoprecipitated DNA in each sample is represented as signal relative to the total amount of input chromatin, which is equivalent to one. | |
Western blot analysis of extracts from various cell lines using Stat1 (D1K9Y) Rabbit mAb. | |
Immunoprecipitation of Stat1 from MCF7 cell extracts using Rabbit (DA1E) mAb IgG XP® Isotype Control #3900 (lane 2) or Stat1 (D1K9Y) Rabbit mAb (lane 3). Lane 1 is 10% input. Western blot was performed using Stat1 (9H2) Mouse mAb #9176. | |
Immunohistochemical analysis of paraffin-embedded human breast carcinoma using Stat1 (D1K9Y) Rabbit mAb. | |
Immunohistochemical analysis of paraffin-embedded human lymphoma using Stat1 (D1K9Y) Rabbit mAb. |
