Rabbit anti-Human AKT1S1 Polyclonal Antibody

Uniprot Id

Q96B36

Target Species

Human

Target Name

AKT1S1

Target Full Name

Proline-rich AKT1 substrate 1

Target Function

Subunit of mTORC1, which regulates cell growth and survival in response to nutrient and hormonal signals. mTORC1 is activated in response to growth factors or amino acids. Growth factor-stimulated mTORC1 activation involves a AKT1-mediated phosphorylation of TSC1-TSC2, which leads to the activation of the RHEB GTPase that potently activates the protein kinase activity of mTORC1. Amino acid-signaling to mTORC1 requires its relocalization to the lysosomes mediated by the Ragulator complex and the Rag GTPases. Activated mTORC1 up-regulates protein synthesis by phosphorylating key regulators of mRNA translation and ribosome synthesis. mTORC1 phosphorylates EIF4EBP1 and releases it from inhibiting the elongation initiation factor 4E (eiF4E). mTORC1 phosphorylates and activates S6K1 at 'Thr-389', which then promotes protein synthesis by phosphorylating PDCD4 and targeting it for degradation. Within mTORC1, AKT1S1 negatively regulates mTOR activity in a manner that is dependent on its phosphorylation state and binding to 14-3-3 proteins. Inhibits RHEB-GTP-dependent mTORC1 activation. Substrate for AKT1 phosphorylation, but can also be activated by AKT1-independent mechanisms. May also play a role in nerve growth factor-mediated neuroprotection.

Target Subcellular Location

Cytoplasm, cytosol.

Target Tissue Specificity

Widely expressed with highest levels of expression in liver and heart. Expressed at higher levels in cancer cell lines (e.g. A-549 and HeLa) than in normal cell lines (e.g. HEK293).

Target Synonyms

40 kDa proline rich AKT substrate ; 40 kDa proline-rich AKT substrate; AKT1 S1; AKT1 substrate 1 (proline rich) ; AKT1 substrate 1; AKT1S 1; AKT1S1; AKTS1_HUMAN; Lobe; MGC2865; PRAS 40; PRAS; PRAS40; Proline rich akt substrate ; Proline rich Akt substrate 40 kDa; Proline-rich AKT1 substrate 1

Target Background

AKT1S1 is a proline-rich substrate of AKT (MIM 164730) that binds 14-3-3 protein (see YWHAH, MIM 113508) when phosphorylated (Kovacina et al., 2003 [PubMed 12524439]).