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Human Arylsulfatase A / ARSA Protein (His Tag)

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Human ARSA Protein Product Information
Synonym:ARSA, MLD
Protein Construction:A DNA sequence encoding the human Arylsulfatase A (NP_000478.2) (Met 1-Ala 507) was expressed with a C-terminal polyhistidine tag.
Expressed Host:Human Cells
Shipping: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.
Human ARSA Protein QC Testing
Purity:> 97 % as determined by SDS-PAGE
Bio-Activity:Measured by its ability to hydrolyze the substrate 4-Nitrocatechol Sulfate (PNCS) . The specific activity is >50 pmoles/min/μg .
Endotoxin:< 1.0 EU per μg of the protein as determined by the LAL method
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Arg 19
Molecule Mass:The recombinant human ARSA consists of 500 amino acids and predicts a molecular mass of 53 kDa. as estimated by SDS-PAGE under reducing conditions.
Formulation:Lyophilized from sterile 25mM Tris, 0.15mM NaCl, pH 7.5
1. Normally 5 % - 8 % trehalose and mannitol are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Human ARSA Protein Usage Guide
Storage:Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution:A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.
Other ARSA Recombinant Protein Products
Arylsulfatase A / ARSA Background

Arylsulfatase A (ARSA) is synthesized as a 52KDa lysosomal enzyme. It is a member of the sulfatase family that is required for the lysosomal degradation of cerebroside-3-sulfate, a sphingolipid sulfate ester and a major constituent of the myelin sheet. Arylsulfatase A is activated by a required co- or posttranslational modification with the oxidation of cysteine to formylglycine. Metachromatic leukodystrophy (MLD) is a lysosomal storage disease in the central and peripheral nervous systems with severe and progressive neurological symptoms caused by the deficiency of Arylsulfatase A. Deficiency of this enzyme is also found in apparently healthy individuals, a condition for which the term pseudodeficiency is introduced. ARSA forms dimers after receiving three N-linked oligosaccharides in the endoplasmic reticulum, and then the dimers are transported to the Golgi where they receive mannose 6-phosphate recognition markers. And thus, ARSA is transported and delivered to dense lysosomes in a mannose 6-phosphate receptor-dependent manner. It has been shown that within the lysosomes, the ARSA dimers can oligomerize to an octamer in a pH-dependent manner. The ARSA deficiency leads to metachromatic leucodystrophy (MLD), a lysosomal storage disorder associated with severe and progressive demyelination in he central and peripheral nervous system. Additionally, the serum level of arylsulfatase A might be helpful in diagnosis of lung and central nervous system cancer.

Human Arylsulfatase A / ARSA References
  • Laidler PM. (1991) Arylsulfatase A--physico-chemical properties and the use of enzyme radioimmunoassay in medical diagnosis Folia Med Cracov. 32(3-4): 149-68.
  • Jean S, et al. (2006) Ethanol decreases rat hepatic arylsulfatase A activity levels. Alcohol Clin Exp Res. 30(11): 1950-5.
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    Catalog: 10449-H08H-20
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