PSAP/Prosaposin Protein, Human, Recombinant (His Tag)
Product Specifications
Background
Prosaposin (PSAP) gene mutations, affecting saposin B (Sap-B) domain, cause a rare metachromatic leukodystrophy (MLD) variant in which arylsulfatase A (ARSA) activity is normal. The human prosaposin gene (PSAP) was previously localized to 10q21-->q22 by isotopic in situ hybridization using a human prosaposin cDNA as a probe. Using fluorescence in situ hybridization with a mouse genomic prosaposin fragment as probe, confirms the localization of PSAP and precisely maps it to band 10q22.1.
Synonyms
GLBA Protein, Human; SAP1 Protein, Human
Gene Name
Prosaposin
Expression System
HEK293 Cells
Tag
C-His
Endotoxin
< 1.0 EU per μg protein as determined by the LAL method.
Purity
> 95 % as determined by SDS-PAGE.
Activity
At Leading Biology, the biological activity of a recombinant protein is routinely measured using a bioassay, e.g. chemotaxis or cell proliferation assay, enzyme assay, or a functional ELISA. When a recombinant protein is an enzyme, specific activity is derived from an enzymatic assay. Each enzyme is tested for potency by cleavage of a substrate. We are in the process of updating the biological activity data. If you have any questions regarding this update, please feel free to contact our technical support team.
Form
Lyophilized
Buffer
Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.
Function
Diagnostic proteins
Molecular Weight
The recombinant human PSAP consists 519 amino acids and predicts a molecular mass of 57.9 kDa.
Storage Conditions
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.
Product Datasheet
http://www.leading-biology.com/en/fastadmin/public/data/datasheet/S_Protein_datasheet/PH51327M2.pdf
Symbol
PSAP
Species
Human
Protein ID
NP_002769.1
Overview
A DNA sequence encoding the human PSAP (NP_002769.1) (Met1-Asn524) was expressed with a polyhistidine tag at the C-terminus.
AA Sequence
Met1-Asn524
Protein ID Link
https://www.ncbi.nlm.nih.gov/protein/NP_002769.1
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