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Recombinant Human MANBA/Beta-Mannosidase His-tag Protein, CF

Bio-Techne includes R&D Systems | Catalog # 10520-GH

Catalog #
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Key Product Details



Accession #




Enzyme Activity

Product Specifications


Human embryonic kidney cell, HEK293-derived human MANBA/Beta-Mannosidase protein
Ala19-Tyr879 & Glu20 - Ser878, with C-terminal 6-His tag


>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

N-terminal Sequence Analysis

Ala19 & Glu20

Predicted Molecular Mass

99.9 kDa


110 kDa, under reducing conditions.


Measured by its ability to hydrolyze 4-methylumbelliferyl Beta-D-mannopyranoside.
The specific activity is >100 pmol/min/μg, as measured under the described conditions.

Scientific Data Images for Recombinant Human MANBA/Beta-Mannosidase His-tag Protein, CF

Recombinant Human MANBA Protein SDS-PAGE.

2 μg/lane of Recombinant Human MANBA Protein (Catalog # 10520-GH) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 110 kDa.

Formulation, Preparation and Storage

Formulation Supplied as a 0.2 μm filtered solution in Tris and NaCl.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.

Background: MANBA/Beta-Mannosidase

MANBA is a lysosomal beta-mannosidase in the degradation pathway of N-glycans and catalyzes the removal of the innermost beta(1-4)-linked mannose residue (1). Mutations of MANBA can lead to cellular storage and secretion in the urine of the disaccharide, Man( beta1–4)GlcNAc (2), and the symptoms of lysosomal storage disease (LSD) beta-mannosidosis, associated with mental retardation, behavioral problems including hyperactivity and aggressiveness, developmental delay, frequent infections, and hearing loss (3). Angiokeratoma corporis diffusum is another symptom of beta‐mannosidosis that is characterized by involuntary eye movements (4) and can be found in other LSDs such as Fabry disease, beta‐galactosidosis, fucosidosis, aspartylglucosaminuria, and galactosialidosis (5). LSDs are progressive disorders and are among the most common genetic disorders affecting children (6). Patients with LSDs are usually treated with enzyme replacement therapy (ERT) in which recombinant enzymes are administered to them for direct uptake into the lysosome (7). MAMBA belongs to the glycosyl hydrolase (GH) 2 family, in which enzymes are classified on the basis of sequence similarity (8). The only other human GH2 enzyme is beta‐glucuronidase, deficiency of which leads to Sly syndrome (9). GH2 family members are characterized by a catalytic TIM barrel (10), in which the catalytic acid-base and nucleophile residues lie on beta‐strands 4 and 7, respectively. Human beta‐mannosidase is sensitive to pH with optima between 4.5 and 5.0 (11).


  1. Alkhayat, A. H. et al. (1998) Hum Molec Genet 7:75.
  2. Hokke, C.H. et al. (1990). J Inherit Metab Dis 13:273.
  3. Wenger, D.A. et al. (1986). N Engl J Med 315:1201.
  4. Gytz, H. et al. (2019) FEBS J. 286:1319.
  5. Rodriguez‐Serna, M. et al. (1996) Arch Dermatol 132:1219.
  6. Hawkins‐Salsbury, J.A. et al. (2011) Hum Mol Genet 20:R54.
  7. Wyatt, K. et al. (2012) Health Technol Assess 16:1. 
  8. Cantarel, B.L. et al. (2009). Nucleic Acids Res 37:D233.
  9. Sly, W.S. et al. (1973). J. Pediatr. 82:249.
  10. Henrissat, B. et al. (1995). Proc Natl Acad Sci USA 92:7090.
  11. Percheron, F. et al. (1992). Biochimie 74:5.

Long Name


Alternate Names

MANB1, Mannanase, Mannase

Entrez Gene IDs

4126 (Human); 110173 (Mouse)

Gene Symbol



Additional MANBA/Beta-Mannosidase Products

Product Documents for Recombinant Human MANBA/Beta-Mannosidase His-tag Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human MANBA/Beta-Mannosidase His-tag Protein, CF

For research use only