DEXTRAN SUCRASE Property

Density 

1.33-1.42g/cm3 at 20℃

vapor pressure 

0.002-0.008Pa at 25℃

storage temp. 

-20°C

solubility 

H2O: soluble0.9-1.1mg/mL, clear to slightly hazy, colorless to light yellow

form 

lyophilized powder

LogP

-1.3 at 20℃ and pH5.7-5.8

Safety

WGK Germany 

3

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H334May cause allergy or asthma symptoms or breathing difficulties if inhaled

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P285In case of inadequate ventilation wear respiratory protection.

P304+P341IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.

P342+P311IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.

P501Dispose of contents/container to..…

DEXTRAN SUCRASE Chemical Properties,Usage,Production

Uses

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.

General Description

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.

Biochem/physiol Actions

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.