Prosaposin, also known as PSAP, is a protein which in humans is encoded by the PSAP gene.[5]
This highly conserved glycoprotein is a precursor for 4 cleavage products: saposins A, B, C, and D. Saposin is an acronym for Sphingolipid Activator PrO[S]teINs.[6] Each domain of the precursor protein is approximately 80 amino acid residues long with nearly identical placement of cysteine residues and glycosylation sites. Saposins A-D localize primarily to the lysosomal compartment where they facilitate the catabolism of glycosphingolipids with short oligosaccharide groups. The precursor protein exists both as a secretory protein and as an integral membrane protein and has neurotrophic activities.[5]
Saposins A–D are required for the hydrolysis of certain sphingolipids by specific lysosomal hydrolases.[7]
^ abcGRCh38: Ensembl release 89: ENSG00000197746 – Ensembl, May 2017
^ abcGRCm38: Ensembl release 89: ENSMUSG00000004207 – Ensembl, May 2017
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
Prosaposin, also known as PSAP, is a protein which in humans is encoded by the PSAP gene. This highly conserved glycoprotein is a precursor for 4 cleavage...
to interact with HSPA1A and Parkin (ligase). GPR37 is a receptor for prosaposin. It was previously thought to be a receptor for head activator, a neuropeptide...
cases, it may be caused by a lack of active saposin A (a derivative of prosaposin). The buildup of unmetabolized lipids adversely affects the growth of...
protein Protein phosphatase with ef-hand domain 2 PSAPL1: encoding protein Prosaposin-like 1 (gene/pseudogene) QDPR: quinoid dihydropteridine reductase RBM47:...
angiogenesis. Moreover, stimulating TSP1 via over-expressing prosaposin or treating with a small prosaposin-derived peptide potently inhibits and even induces regression...
infantile Tay–Sachs Metachromatic leukodystrophy (MLD) Arylsulfatase A or prosaposin Sulfatide compounds in neural tissue Demyelination in CNS and PNS: Mental...
LAMP2, GNS/N-acetylglucosamine-6-sulfatase, TSPAN6/tetraspanin-6, PSAP/prosaposin, and TMEM192/transmembrane protein 192 may contribute to the execution...
All mammalian saposins are synthesized as a single precursor molecule (prosaposin) which contains four Saposin-B domains, yielding the active saposins after...
Center for Biotechnology Information, U.S. National Library of Medicine. "Entrez Gene: Prosaposin-like 1 (gene/pseudogene)". Retrieved 2013-04-11. v t e...
lysosome. One recent study has shown that progranulin may actually mediate prosaposin trafficking to the lysosome via SORT1. However, the absence of SORT1 does...
Look up PSAP in Wiktionary, the free dictionary. PSAP may refer to: Prosaposin, a protein associated with Gaucher disease Public-safety answering point...
glycosylation sites. The cDNA sequence that codes for saposin is called prosaposin. It is a precursor for four cleavage products, the saposins A, B, C, and...
binding G protein-coupled receptor activity signal transducer activity prosaposin receptor activity Cellular component integral component of membrane plasma...