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Anti-p70 S6K (phospho-T421) Antibody

品牌：Antibodies

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Anti-p70 S6K (phospho-T421) Antibody

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Overview

Name:	Anti-p70 S6K (phospho-T421) Antibody See all p70 S6K primary antibodies
Description:	Rabbit polyclonal antibody to p70 S6K (phospho-T421)
Specificity:	p-p70 S6K (T421) pAb detects endogenous levels of p70 S6 kinase only when phosphorylated at Thr421. This antibody also detects p85 S6 kinase when phosphorylated at Thr444.
Applications:	WB, IHC, IF
Reactivity:	Human, Mouse, Rat
Immunogen:	Synthetic phosphopeptide derived from human p70 S6K around the phosphorylation site of Threonine 421.
Host:	Rabbit
Clonality:	Polyclonal
Conjugate:	Unconjugated
Molecular Weight:	~ 59,70,85 kDa
Purity:	The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen and the purity is > 95% (by SDS-PAGE).
Product Form:	1mg/ml in PBS?with?0.1%?Sodium?Azide,?50%?Glycerol.

Target

Function:	Serine/threonine-protein kinase that acts downstream of mTOR signaling in response to growth factors and nutrients to promote cell proliferation, cell growth and cell cycle progression. Regulates protein synthesis through phosphorylation of EIF4B, RPS6 and EEF2K, and contributes to cell survival by repressing the pro-apoptotic function of BAD. Under conditions of nutrient depletion, the inactive form associates with the EIF3 translation initiation complex. Upon mitogenic stimulation, phosphorylation by the mammalian target of rapamycin complex 1 (mTORC1) leads to dissociation from the EIF3 complex and activation. The active form then phosphorylates and activates several substrates in the pre-initiation complex, including the EIF2B complex and the cap-binding complex component EIF4B. Also controls translation initiation by phosphorylating a negative regulator of EIF4A, PDCD4, targeting it for ubiquitination and subsequent proteolysis. Promotes initiation of the pioneer round of protein synthesis by phosphorylating POLDIP3/SKAR. In response to IGF1, activates translation elongation by phosphorylating EEF2 kinase (EEF2K), which leads to its inhibition and thus activation of EEF2. Also plays a role in feedback regulation of mTORC2 by mTORC1 by phosphorylating RICTOR, resulting in the inhibition of mTORC2 and AKT1 signaling. Mediates cell survival by phosphorylating the pro-apoptotic protein BAD and suppressing its pro-apoptotic function. Phosphorylates mitochondrial URI1 leading to dissociation of a URI1-PPP1CC complex. The free mitochondrial PPP1CC can then dephosphorylate RPS6KB1 at Thr-412, which is proposed to be a negative feedback mechanism for the RPS6KB1 anti-apoptotic function. Mediates TNF-alpha-induced insulin resistance by phosphorylating IRS1 at multiple serine residues, resulting in accelerated degradation of IRS1. In cells lacking functional TSC1-2 complex, constitutively phosphorylates and inhibits GSK3B. May be involved in cytoskeletal rearrangement through binding to neurabin. Phosphorylates and activates the pyrimidine biosynthesis enzyme CAD, downstream of MTOR.
Tissue Specificity:	Widely expressed.
Sequence Similarities:	Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family. S6 kinase subfamily.
Post-Translational Modification:	Phosphorylation at Thr-412 is regulated by mTORC1. The phosphorylation at this site is maintained by an agonist-dependent autophosphorylation mechanism (By similarity). Activated by phosphorylation at Thr-252 by PDPK1. Dephosphorylation by PPP1CC at Thr-412 in mitochondrion.
Cellular Location:	Cell junction > Synapse > Synaptosome. Mitochondrion outer membrane. Mitochondrion. Colocalizes with URI1 at mitochondrion.