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Rabbit Anti-phospho-HGS (Tyr334) antibody
HGS is a regulates endosomal sorting and plays a critical role in the recycling and degradation of membrane receptors. The encoded protein sorts monoubiquitinated membrane proteins into the multivesicular body, targeting these proteins for lysosome-dependent degradation. [provided by RefSeq, Dec 2010].
Function:
Involved in intracellular signal transduction mediated by cytokines and growth factors. When associated with STAM, it suppresses DNA signaling upon stimulation by IL-2 and GM-CSF. Could be a direct effector of PI3-kinase in vesicular pathway via early endosomes and may regulate trafficking to early and late endosomes by recruiting clathrin. May concentrate ubiquitinated receptors within clathrin-coated regions. Involved in down-regulation of receptor tyrosine kinase via multivesicular body (MVBs) when complexed with STAM (ESCRT-0 complex). The ESCRT-0 complex binds ubiquitin and acts as sorting machinery that recognizes ubiquitinated receptors and transfers them to further sequential lysosomal sorting/trafficking processes. May contribute to the efficient recruitment of SMADs to the activin receptor complex. Involved in receptor recycling via its association with the CART complex, a multiprotein complex required for efficient transferrin receptor recycling but not for EGFR degradation.
Subcellular Location:
Cytoplasm. Early endosome membrane. Endosome,multivesicular body membrane.
Tissue Specificity:
Ubiquitous expression in adult and fetal tissues with higher expression in testis and peripheral blood leukocytes.
Post-translational modifications:
Phosphorylated on Tyr-334. A minor site of phosphorylation on Tyr-329 is detected. Phosphorylation occurs in response to EGF, IL-2, GM-CSF and HGF.
Ubiquitinated by ITCH.
Similarity:
Contains 1 FYVE-type zinc finger.
Contains 1 UIM (ubiquitin-interacting motif) repeat.
Contains 1 VHS domain.
SWISS:
O14964
Gene ID:
9146
Database links:
Entrez Gene: 9146 Human
Entrez Gene: 15239 Mouse
Omim: 604375 Human
SwissProt: O14964 Human
SwissProt: Q99LI8 Mouse
Unigene: 514590 Human
Unigene: 7919 Mouse
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