Related Experiment Video
Updated: Feb 12, 2026

Bacterial Cellulose Spheres that Encapsulate Solid Materials
Published on: February 26, 2021
Targeted gene editing of bacterial cellulose biosynthesis-related genes enables programmable mechanical properties of
Aitian Tian1, Hongliang Gao1, Shuangqi An1
1School of Life Sciences, East China Normal University, Shanghai 200241, PR China.
Abstract:
Bacterial cellulose (BC) is a sustainable biomaterial with excellent mechanical properties and broad application potential. Controlling BC structure and properties is important for its expanding applications and advancing industrial translation. Here, we establish a high-efficiency, seamless genome-editing system for Komagataeibacter xylinus based on mutant pheS gene and apply it to systematically evaluate the roles of bacterial cellulose synthesis (bcs) operon genes in BC production and properties. We found deletion of bcsCⅡ gene markedly enhances BC mechanical properties in K. xylinus P1: tensile strength and Young's modulus reach 3.56-fold and 2.36-fold improvement, respectively. Multiscale structural analyses indicate that the enhancements arise from more uniform nanofibril assembly and a denser hierarchical network of BC. We further demonstrate that co-culture strategy or inducible expression of bcsCⅡ enable programmable control of BC mechanical properties. Collectively, this work provides an efficient genetic toolkit for K. xylinus, systematically reveals functional roles of bcs operon genes in BC assembly, and offers a rational route to engineer programmable high-performance BC materials.
Related Concept Videos
Cellulose and Pectic Polysaccharides
As a cell matures, its cell wall specializes according to its type. For example, the...
Bacterial Transformation
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Bacterial Signaling
Bacterial RNA Polymerase
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
Gene Flow
Gene Families
Occasionally these regions can be adapted to take on new roles within the organism, becoming novel genes...

