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A8781

Sigma-Aldrich

β-Amylase from sweet potato

greener alternative

Synonym(s):

1,4-α-D-Glucan maltohydrolase

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About This Item

CAS Number:
9000-91-3
Enzyme Commission number:
3.2.1.2 (BRENDA, IUBMB)
EC Number:
232-566-1
MDL number:
MFCD00081391
UNSPSC Code:
41106514
NACRES:
NA.56

form

powder

mol wt

~200,000

packaging

vial of 15 mg

greener alternative product score

old score: 57
new score: 1
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greener alternative product characteristics

Waste Prevention
Safer Solvents and Auxiliaries
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product

greener alternative category

Re-engineered,

storage temp.

−20°C

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General description

β-Amylase from sweet potato is a tetrameric enzyme with each monomer comprising (α/β) core domain and a C-terminal loop region. It belongs to the glycoside hydrolase family GH14.
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Application

β-Amylase from sweet potato has been used:
  • as a molecular weight marker in blue native polyacrylamide gel electrophoresis (PAGE)
  • as a standard for calibration curve preparation in size exclusion chromatography
  • as a model protein for small-angle X-ray analysis (SAXs)

Biochem/physiol Actions

β-Amylase acts on the polysaccharide α(1,4) glycosidic linkages and releases maltose present in the non-reducing ends. Due to its stability, β-Amylase from sweet potato is used in the immobilized enzyme preparation in combination with agarose beads.

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H334

Precautionary Statements

P261 - P284 - P501

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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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Luca Costa et al.
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Synchrotron radiation facilities are pillars of modern structural biology. Small-Angle X-ray scattering performed at synchrotron sources is often used to characterize the shape of biological macromolecules. A major challenge with high-energy X-ray beam on such macromolecules is the perturbation of
Khalilah G Reddie et al.
Molecular bioSystems, 4(6), 521-531 (2008-05-22)
Oxidation of the thiol functional group in cysteine (Cys-SH) to sulfenic (Cys-SOH), sulfinic (Cys-SO2H) and sulfonic acids (Cys-SO3H) is emerging as an important post-translational modification that can activate or deactivate the function of many proteins. Changes in thiol oxidation state
Integration of affinity precipitation with partitioning methods for bioseparation of chitin binding lectins.
Teotia, S. et al.
Food and Bioproducts Processing, 84, 37-43 (2006)
Liyu Tu et al.
Journal of cell science, 119(Pt 24), 5077-5086 (2006-12-13)
The surface of the mammalian urinary bladder is covered by a crystalline, asymmetric unit membrane (AUM) structure that contains the four major uroplakins (UPs): Ia, Ib, II and IIIa. UPIa and UPIb belong to the family of tetraspanins. Although UPIa
S Teotia et al.
Enzyme and microbial technology, 28(9-10), 792-795 (2001-06-09)
beta-amylases are used in production of maltose syrup. It is shown that sweet potato beta-amylase can be purified by affinity precipitation with alginate with 80% activity yield and 44 fold purification. SDS-PAGE of the purified protein showed a single band
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