Related Experiment Video
Updated: Aug 10, 2026

Using Synthetic Biology to Engineer Living Cells That Interface with Programmable Materials
Published on: March 9, 2017
[Levan synthesis by a Bacillus sp. culture]
Abstract:
A strain of Bacillus sp. was isolated which is an active producer of levan. The dynamics of the polysaccharide biosynthesis was studied depending on concentrations of sucrose in the medium. The amount of the synthesized levan was proportional to the concentration of sucrose ranging from 0.2 to 6%, being a maximum of 28.2 mg/ml in the medium containing 12% of sucrose. The presence of urea or ammonium sulfate in the medium stimulates the levan biosynthesis. A medium with pH 6.0--6.8 is optimal for the polysaccharide formation. Levan, synthesized by Bacillus sp., is a polysaccharide with the molecular weight more than 2 mln. Levansucrase is an induced enzyme, whose inductors are sucrose and raffinose.
More Related Videos
13:53Homogeneous Glycoconjugate Produced by Combined Unnatural Amino Acid Incorporation and Click-Chemistry for Vaccine Purposes
Published on: December 19, 2020
07:59A High-Yield Streptomyces Transcription-Translation Toolkit for Synthetic Biology and Natural Product Applications
Published on: September 10, 2021
Related Concept Videos
Production of Antibiotics
Production of Pharmaceuticals