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This gene encodes a highly conserved preproprotein that is proteolytically processed to generate four main cleavage products including saposins A, B, C, and D. 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. Mutations in this gene have been associated with Gaucher disease and metachromatic leukodystrophy. Alternative splicing results in multiple transcript variants, at least one of which encodes an isoform that is proteolytically processed.

Immunohistochemistry

Immunohistochemistry analysis of paraffin-embedded human prostate cancer tissues using PSAP antibody.

Immunocytochemistry

Immunocytochemistry analysis of PSAP in Hela cells using PSAP antibody (green),and DAPI(blue). Red: Actin filaments have been labeled with Alexa Fluor- 555 phalloidin.

Flow

Flow Cytometry analysis of Hela cells using PSAP antibody (green) and negative control (red).

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