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Dextran Sucrase from Leuconostoc mesenteroides

产品编号:3075258
规格:lyophilized powder, ≥100 units/mg protein
CAS NO:9032-14-8
包装规格:10 UNITS
产品类别:进口试剂
品牌:Sigma-Aldrich
优惠价:立即咨询
产品价格
产品编号包装单位单价(元)国内现货国外库存询价单
307525810 UNITS5110
产品别名

9032-14-8

Dextran Sucrase from Leuconostoc mesenteroides

基本信息
Enzyme Commission (EC) Number【酶学委员会(EC)编号】
2.4.1.5 ( BRENDA | IUBMB )
MDL number
MFCD00130936
NACRES
NA.54
General description【一般描述】
Dextran Sucrase from Leuconostoc mesenteroides belongs to glycoside hydrolase family 70 (GH70). It functions through a retaining mechanism and uses two catalytic acidic residues. Dextran sucrase has a dextran binding site in the C-terminal domain.
Application【应用】
Dextran sucrase from Leuconostoc mesenteroides has been used in a study to investigate the functional and structural characterization of α-(1→2) branching sucrase derived from DSR-E glucansucrase. Dextran sucrase from Leuconostoc mesenteroides has also been used in a study to investigate the bioengineering of Leuconostoc mesenteroides glucansucrases.
The enzyme from Sigma has been used to prepare immobilized sphere for the production of dextran from sucrose.
Dextran Sucrase from Leuconostoc mesenteroides has been used:
  • in immobilization on shirasu porous membrane (SPG) for dextran production
  • in the enzymatic synthesis of dextran nanoparticles at various pH range
  • in the immobilization with hydroxyapatite for dextran production

Biochem/physiol Actions【生化/生理作用】
Dextransucrases are glucansucrases that are able to produce dextran, a glucose polymer linked mainly through α1-6 bonds. However, α1-3, α1-6, α1-4 and α1-2 bonds are also found, in both the main chain and the branching linkages. The peptide has approximately 1600 amino acids. The aspartic acid in position 551 is essential for catalytic activity, while glutamic acid 589 and aspartic acid 662 complement the catalytic triad. The activity of dextransucrase is decreased by EDTA, and is restored by the addition of calcium ions. Zinc, cadmium, lead, mercury and copper ions are inhibitory to various degrees.
Quality【质量】
色谱纯化产品
Unit Definition【单位定义】
One unit will liberate 1.0 μmole of fructose per min at 37 ℃, pH 5.4.
Physical form【外形】
Lyophilized powder containing dextran, MES buffer salts and CaCl2
产品性质
form【形式】
lyophilized powder
Quality Level【质量水平】
200
Specific Activity
≥100 units/mg protein
composition【组成】
Protein, ~15% Lowry
solubility【溶解性】
H2O: soluble 0.9-1.1 mg/mL, clear to slightly hazy, colorless to light yellow
storage temp.【储存温度】
−20℃
packaging【包装】
10 units in glass bottle
安全信息
Storage Class Code【储存分类代码】
13 - Non Combustible Solids
WGK
WGK 3
Personal Protective Equipment【个人防护装备】
Eyeshields, Gloves, type N95 (US)
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