| 货号 | 9918T |
| 描述 | The Translational Control Antibody Sampler Kit provides a fast and economical means of evaluating multiple proteins involved in translational control. The kit contains enough primary and secondary antibody to perform four Western blot experiments, as well as specific inhibitors of PI3 kinase and mTOR/FRAP. |
| 目标/特异性 | Each phospho-specific antibody in the Translational Control Antibody Sampler Kit detects the intended target only when phosphorylated at the indicated site. Phospho-4E-BP1 (Thr37/46) (236B4) Rabbit mAb may cross-react with 4E-BP2 and 4E-BP3 when phosphorylated at equivalent sites. |
| 供应商 | CST |
| 背景 | Key steps in translational control occur at the level of eukaryotic initiation factor 4F (eIF4F) and p70 S6 kinase regulation. eIF4F is a complex whose functions include the recognition of the mRNA 5 cap structure. Several stimuli, such as insulin and various growth and survival factors, regulate the eIF4F complex and p70 S6 kinase primarily by triggering a signaling cascade dependent on sequential activation of PI3K, Akt/PKB and mTOR/FRAP kinases. Akt is activated by phosphorylation within the C-terminus at Ser473 and within the activation loop at Thr308 by phospholipid-dependent kinases. Inactivation in vivo of PI3K by the highly selective inhibitor LY294002 inhibits Akt and downstream elements of this cascade. Direct phosphorylation of mTOR/FRAP at Ser2448 by Akt is a key regulatory event controlling its kinase activity. mTOR/FRAP activity can be effectively blocked by Rapamycin, leading to inactivation of eukaryotic initiation factor 4E binding protein 1 (4E-BP1), an inhibitor of translation initiation, and activation of p70 S6 kinases. Inactivation of 4E-BP1 by sequential phosphorylation causes the release of eIF4E, which, together with eIF4G and other factors, forms a functional eIF4F cap binding complex. p70 S6 kinases phosphorylates the 40S ribosomal subunit protein S6 and stimulates the translation of 5 oligopyrimidine tract containing mRNAs. The Erk pathway is also involved in regulation at this level by regulating the eIF4E kinase, Mnk1, and activating p70 S6 kinase. Tuberin, a product of the tumor supressor gene TSG2, is directly phosphorylated at Thr1462 by Akt/PKB. Tuberin inhibits the mammalian target of rapamycin, mTOR, which results in inhibition of p70 S6 kinase and activation of 4E-BP1 and, therefore, inhibition of translation. |
| 存放说明 | -20C |
| 参考文献 | Gingras, A. et al. (1999) Annu. Rev. Biochem. 68, 913-963. |
Immunohistochemical analysis using Phospho-S6 Ribosomal Protein (S235/236) (D57.2.2E) XP® Rabbit mAb on SignalSlide® Phospho-Akt (Ser473) IHC Controls #8101 (paraffin-embedded LNCaP cells, untreated (left) or LY294002-treated (right). | |
Western blot analysis of extracts from C2C12 cells, untreated or thapsigargin-treated, using Phospho-eIF2α (Ser51) (D9G8) XP® Rabbit mAb #3398 (upper) or eIF2α Antibody #9722 (lower). | |
Western blot analysis of extracts from PC12 and NIH/3T3 cells, treated with λ phosphatase, 20% FBS (20 min) or 100 ng/ml PDGF (20 min) as indicated, using Phospho-S6 Ribosomal Protein (Ser235/236) (D57.2.2E) XP® Rabbit mAb #4858 (upper) or S6 Ribosomal Protein (5G10) Rabbit mAb #2217 (lower). | |
Western blot analysis of extracts from 293T cells using 4E-BP1 Antibody #9452 (upper) and Phospho-4E-BP1 (Thr37/46) Antibody #2855 (lower). The cells were starved for 24 hours in serum-free medium and underwent a 1 hour amino acid deprivation. Amino acids were replenished for 1 hour. Cells were then either untreated (-) or treated with 100 nM insulin (+) for 30 minutes. | |
Immunohistochemical analysis of paraffin-embedded human lymphoma using Phospho-eIF2α (Ser51) (D9G8) XP® Rabbit mAb. | |
Western blot analysis of extracts from PC-3 cells, untreated or LY294002/wortmannin-treated, and NIH/3T3 cells, serum-starved or PDGF-treated, using Phospho-Akt (Ser473) (D9E) XP® Rabbit mAb #4060 (upper) or Akt (pan) (C67E7) Rabbit mAb #4691 (lower). | |
Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Phospho-eIF2α (Ser51) (D9G8) XP® Rabbit mAb. | |
Western blot analysis of extracts from C2C12 cells, untreated or thapsigargin-treated, using Phospho-eIF2α (Ser51) (D9G8) XP® Rabbit mAb (upper) or eIF2α Antibody #9722 (lower). | |
Immunohistochemical analysis of frozen U-87MG xenograft using Phospho-S6 Ribosomal Protein (Ser235/236) (D57.2.2E) XP® Rabbit mAb. | |
Immunohistochemical analysis of frozen SKOV3 xenograft using Phospho-Akt (Ser473) (D9E) XP® Rabbit mAb. | |
Immunohistochemical analysis of paraffin-embedded human colon carcinoma, untreated (left) or λ phosphatase-treated (right), using Phopsho-eIF2α (Ser51) (D9G8) XP® Rabbit mAb. | |
Immunohistochemical analysis of paraffin-embedded human breast carcinoma comparing SignalStain® Antibody Diluent #8112 (left) to TBST/5% normal goat serum (right) using Phospho-Akt (Ser473) (D9E) XP® Rabbit mAb #4060. | |
Immunohistochemical analysis of paraffin-embedded human lung carcinoma using Phospho-S6 Ribosomal Protein (Ser235/236) (D57.2.2E) XP® Rabbit mAb. | |
Immunohistochemical analysis of paraffin-embedded PTEN heterozygous mutant mouse endometrium using Phospho-Akt (Ser473) (D9E) XP® Rabbit mAb. (Tissue section courtesy of Dr. Sabina Signoretti, Brigham and Womens Hospital, Harvard Medical School, Boston, MA.) | |
Flow cytometric analysis of Jurkat cells, untreated (green) or treated with LY294002 #9901, wortmannin #9951 and U0126 #9903 (blue), using Phospho-Akt (Ser473) (D9E) XP® Rabbit mAb compared to a nonspecific negative control antibody (red). |
