Anti-Phospho-REDD1 (Thr23/25) Antibody

REDD1, Regulated in Development and DNA damage responses 1, is induced by hypoxia, cell stress, and apoptosis. Reduced REDD1 levels can sensitize cells towards apoptosis, where elevated levels of REDD1 induced by hypoxia can desensitize cells to apoptotic stimuli (Schwarzer et al, 2005) . REDD1 has a crucial role in inhibiting mammalian rapamycin complex 1 (mTORC1) signaling during hypoxic stress (Katiyar et al, 2009) . It has been shown that the rapid degradation of REDD1 is mediated by the CUL4A–DDB1–ROC1–b-TRCP E3 ligase complex and is regulated by REDD1 phosphorylation at Thr-25, Thr-23 and Ser-19 through the activity of GSK3b (Katiyar et al, 2009) .

DDIT4 antibody, DDIT4_HUMAN antibody, Dig2 antibody, DNA damage inducible transcript 4 antibody, DNA damage inducible transcript 4 protein antibody, DNA damage-inducible transcript 4 protein antibody, FLJ20500 antibody, HIF 1 responsive protein RTP801 antibody, HIF 1 responsive RTP801 antibody, HIF-1 responsive protein RTP801 antibody, Protein regulated in development and DNA damage response 1 antibody, REDD-1 antibody, REDD1 antibody, RTP801 antibody

Synthetic phospho-peptide corresponding to amino acid residues surrounding Thr23/25 of human REDD1, conjugated to keyhole limpet hemocyanin (KLH) . Immunogen species is Human.

Broadly expressed, with lowest levels in brain, skeletal muscle and intestine. Up-regulated in substantia nigra neurons from Parkinson disease patients (at protein level) .

Cancer, Cancer Metabolism, Cardiovascular, Epigenetics and Nuclear Signaling, Hypoxia, Metabolism, Metabolism Processes, Pathways and Processes, Response To Hypoxia

Regulates cell growth, proliferation and survival via inhibition of the activity of the mammalian target of rapamycin complex 1 (mTORC1) . Inhibition of mTORC1 is mediated by a pathway that involves DDIT4/REDD1, AKT1, the TSC1-TSC2 complex and the GTPase RHEB. Plays an important role in responses to cellular energy levels and cellular stress, including responses to hypoxia and DNA damage. Regulates p53/TP53-mediated apoptosis in response to DNA damage via its effect on mTORC1 activity. Its role in the response to hypoxia depends on the cell type; it mediates mTORC1 inhibition in fibroblasts and thymocytes, but not in hepatocytes (By similarity) . Required for mTORC1-mediated defense against viral protein synthesis and virus replication (By similarity) . Inhibits neuronal differentiation and neurite outgrowth mediated by NGF via its effect on mTORC1 activity. Required for normal neuron migration during embryonic brain development. Plays a role in neuronal cell death.

Storage at -20°C is recommended, as aliquots may be taken without freeze/thawing due to presence of 50% glycerol. Stable for at least 1 year at -20°C. After date of receipt, stable for at least 1 year at -20°C.

Specific for endogenous levels of the ~34 kDa REDD1 phosphorylated at Thr23/25. Immunolabeling is blocked by preadsorption with the phosphopeptide used as antigen, but not by the corresponding non-phosphopeptide.