Anti-SOCS3 Antibody Picoband®

SOCS3 (Suppressor of cytokine signaling 3) is a protein that in humans is encoded by the SOCS3 gene. SOCS3 is transiently expressed by multiple cell lineages within the immune system and functions predominantly as a negative regulator of cytokines that activate the JAK-STAT3 pathway. This gene encodes a member of the STAT-induced STAT inhibitor (SSI), also known as suppressor of cytokine signaling (SOCS), family. SSI family members are cytokine-inducible negative regulators of cytokine signaling. The expression of this gene is induced by various cytokines, including IL6, IL10, and interferon (IFN) -gamma. The protein encoded by this gene can bind to JAK2 kinase, and inhibit the activity of JAK2 kinase. For signaling of IL-6, Epo, GCSF and Leptin, binding of SOCS3 to the respective cytokine receptor has been found to be crucial for the inhibitory function of SOCS3. Studies of the mouse counterpart of this gene suggested the roles of this gene in the negative regulation of fetal liver hematopoiesis, and placental development.

A synthetic peptide corresponding to a sequence in the middle region of human SOCS3, identical to the related mouse sequence, different from the related rat sequence by one amino acid.

Widely expressed with high expression in heart, placenta, skeletal muscle, peripheral blood leukocytes, fetal and adult lung, and fetal liver and kidney. Lower levels in thymus.

Adapters, Cancer, Cancer Metabolism, Cytokines, Cytoplasmic, Epigenetics and Nuclear Signaling, Hematopoietic Progenitors, Immunology, Innate Immunity, Metabolism, Metabolism Processes, Nuclear Signaling Pathways, Obesity, Pathways and Processes, Response To Hypoxia, Signal Transduction, Stem Cells

SOCS family proteins form part of a classical negative feedback system that regulates cytokine signal transduction. SOCS3 is involved in negative regulation of cytokines that signal through the JAK/STAT pathway. Inhibits cytokine signal transduction by binding to tyrosine kinase receptors including gp130, LIF, erythropoietin, insulin, IL12, GCSF and leptin receptors. Binding to JAK2 inhibits its kinase activity. Suppresses fetal liver erythropoiesis. Regulates onset and maintenance of allergic responses mediated by T-helper type 2 cells. Regulates IL-6 signaling in vivo (By similarity) . Probable substrate recognition component of a SCF-like ECS (Elongin BC- CUL2/5-SOCS-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Seems to recognize IL6ST (By similarity) . .

1. Babon, J. J., McManus, E. J., Yao, S., DeSouza, D. P., Mielke, L. A., Sprigg, N. S., Willson, T. A., Hilton, D. J., Nicola, N. A., Baca, M., Nicholson, S. E., Norton, R. S.The structure of SOCS3 reveals the basis of the extended SH2 domain function and identifies an unstructured insertion that regulates stability.Molec. Cell 22: 205-216, 2006. 2. Chen, Z., Laurence, A., Kanno, Y., Pacher-Zavisin, M., Zhu, B.-M., Tato, C., Yoshimura, A., Hennighausen, L., O'Shea, J. J.Selective regulatory function of Socs3 in the formation of IL-17-secreting T cells.Proc. Nat. Acad. Sci. 103: 8137-8142, 2006. 3. Jo, D., Liu, D., Yao, S., Collins, R. D., Hawiger, J.Intracellular protein therapy with SOCS3 inhibits inflammation and apoptosis.Nature Med. 11: 892-898, 2005.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.

Cell membrane; Multi-pass membrane protein. Endomembrane system; Multi-pass membrane protein. Endosome membrane; Multi-pass membrane protein. Translocates from intracellular locations to the plasma membrane. Density of transporter molecules on the plasma membrane is itself regulated by serotonin. function as homooligomeric forms (By similarity) . .