Human SorCS3 Antibody
Human SorCS3 Antibody Summary
Accession # Q9UPU3
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Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
SorCS3 (sortilin-related YPS10 domain containing receptor 3) is a type I transmembrane receptor that belongs to the mammalian Vps10p (vacuolar protein-sorting 10 protein) family of sorting receptors. This family includes sortilin, SorLA, and three SorCS proteins (1, 2). It is synthesized as a 1222 amino acid (aa) preproform with a 33 aa signal sequence and a 100 aa propeptide. After proteolytic processing at a furin-type consensus sequence, mature SorCS3 is generated that is 100‑110 kDa in size and 1089 aa in length. It contains a 992 aa extracellular/lumenal domain (ECD), a 21 aa transmembrane segment and a 76 aa cytoplasmic domain. Human SorCS3 ECD shares 92%, 93%, 94% and 91% aa identity with mouse, rat, bovine and canine SorCS3 ECD, respectively. It also shares 70% and 46% aa identity with human SorCS1 and SorCS2 ECD, respectively. The ECD contains an imperfect leucine-rich repeat (LRR) and a Vps10p domain that binds both pro- and mature NGF (2, 3). The ECD may be shed constitutively, or up‑regulated when induced by phorbol esters (4). The metalloproteinase TACE/ADAM17 is known to cleave SorCS3 near the membrane (4). The shed ECD is able to bind PDGF-BB and the NGF propeptide (4, 5). The function of the SorCS3 propeptide is unknown. It does not block activity or influence protein processing in a manner analogous to the sortilin propeptide (3, 5). SorCS3 is predominantly expressed on the plasma membrane where it can be slowly internalized (3). Despite the presence of a sorting domain, there is no evidence for SorCS3-mediated intracellular trafficking activity (3). It is expressed in mouse embryonic and adult central nervous system in areas distinct from that of SorCS1 and SorCS2 (1). Neuronal activity up‑regulates SorCS3 expression in the mouse hippocampus (1).
- Hermey, G. et al. (2004) J. Neurochem. 88:1470.
- Hampe, W. et al. (2001) Hum. Genet. 108:529.
- Westergaard, U. B. et al. (2005) FEBS Lett. 579:1172.
- Hermey, G. et al. (2006) Biochem. J. 395:285.
- Westergaard, U. et al. (2004) J. Biol. Chem. 279:50221.
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