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M9400

Sigma-Aldrich

β-Mannosidase from Helix pomatia

5-30 units/mL, ammonium sulfate suspension, crude extract

Synonym(s):

β-D-Mannoside mannohydrolase

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About This Item

CAS Number:
9025-43-8
Enzyme Commission number:
3.2.1.25 (BRENDA, IUBMB)
MDL number:
MFCD00130638
UNSPSC Code:
12352204
NACRES:
NA.32

form

ammonium sulfate suspension

quality

crude extract

mol wt

94 kDa

concentration

5-30 units/mL

foreign activity

β-N-acetylglucosaminidase and α-mannosidase <1.0%

storage temp.

2-8°C

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General description

β-Mannosidase is a lysosomal enzyme that belongs to the glycosyl hydrolase family 2.

Application

β-Mannosidase from Helix pomatia has been used:
  • in the digestion of glycans for enzymatic analysis
  • in the treatment of labeled monogalactosyl Manno-oligosaccharides
  • in non-mammalian glycosidase inhibition assays

Biochem/physiol Actions

β-Mannosidase participates in cleaving the β(1–4)-linked mannose located at the nonreducing end of N-glycosylated proteins. It is involved in the polysaccharide degradation pathway. In humans, mutations in the gene are associated with β-mannosidosis, a lysosomal storage disease. Low levels of β-Mannosidase due to mutations also lead to nystagmus, an eye disorder associated with involuntary eye movements.

Unit Definition

One unit will hydrolyze 1 μmole of p-nitrophenyl-β-D-mannopyranoside to p-nitrophenol and D-mannopyranoside per min at pH 4.0 at 25°C.

Physical form

Suspension in 3.0 M (NH4)2SO4 containing 10 mM sodium acetate, pH approx. 4.0

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

M9400-5UN:
M9400-BULK:
M9400-1UN:
M9400-VAR:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Umme Afsari Zahura et al.
Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology, 162(1-3), 24-33 (2012-03-01)
A β-D-mannosidase (EC 3.2.1.25) with a molecular mass of approximately 100 kDa was purified from the digestive fluid of a marine gastropod Aplysia kurodai by ammonium sulfate fractionation followed by column chromatographies on TOYOPEARL Butyl-650 M, TOYOPEARL DEAE-650 M, and
Sunghoon Park et al.
Protein and peptide letters, 20(1), 107-114 (2012-07-14)
Sequence alignments and homology modeling of Pyrococcus furiosus thermostable glycosidase (PFTG) showed that the residue 150 is conserved as tryptophan in β-glycosidase and in other related enzymes such as β- mannosidase and β-galactosidase. To elucidate the relationship between the substrate
Barbora Fliedrová et al.
Protein expression and purification, 85(2), 159-164 (2012-08-14)
β-Mannosidase (EC 3.2.1.25) is an exoglycosidase specific for the hydrolysis of terminal β-linked mannoside in various sugar chains. cDNA corresponding to the β-mannosidase gene was cloned from Aspergillus niger, sequenced, and expressed in the yeast Pichia pastoris. The β-mannosidase gene
Farage H Al-Ghazzewi et al.
Journal of the science of food and agriculture, 92(11), 2394-2396 (2012-04-13)
Glucomannan polysaccharides may be hydrolysed to lower molecular weight molecules using acids or enzymes, specifically mannanases or cellulases. Mannanases (β-mannanases) hydrolyse β-(1-4)-linked mannose residues randomly in mannans whilst cellulases (β-glucanase) hydrolyse β-(1-4)-linked glucose residues. The molecular weight of the hydrolysate
Cristina Martínez-Andújar et al.
The Plant journal : for cell and molecular biology, 71(4), 575-586 (2012-03-31)
The micropylar region of endosperm in a seed, which is adjacent to the radicle tip, is called the 'endosperm cap', and is specifically activated before radicle emergence. This activation of the endosperm cap is a widespread phenomenon among species and
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