Regulating the structure of bacterial cellulose by altering the expression of bcsD using CRISPR/dCas9 / 生物工程学报
Chinese Journal of Biotechnology
; (12): 772-779, 2022.
Article
in Zh
| WPRIM
| ID: wpr-927743
Responsible library:
WPRO
ABSTRACT
Gluconacetobacter xylinus is a primary strain producing bacterial cellulose (BC). In G. xylinus, BcsD is a subunit of cellulose synthase and is participated in the assembly process of BC. A series of G. xylinus with different expression levels of the bcsD gene were obtained by using the CRISPR/dCas9 technique. Analysis of the structural characteristics of BC showed that the crystallinity and porosity of BC changed with the expression of bcsD. The porosity varied from 59.95%-84.05%, and the crystallinity varied from 74.26%-93.75%, while the yield of BC did not decrease significantly upon changing the expression levels of bcsD. The results showed that the porosity of bacterial cellulose significantly increased, while the crystallinity was positively correlated with the expression of bcsD, when the expression level of bcsD was below 55.34%. By altering the expression level of the bcsD gene, obtaining BC with different structures but stable yield through a one-step fermentation of G. xylinus was achieved.
Key words
Full text:
1
Database:
WPRIM
Main subject:
Cellulose
/
Gluconacetobacter xylinus
/
Fermentation
/
Clustered Regularly Interspaced Short Palindromic Repeats
Language:
Zh
Journal:
Chinese Journal of Biotechnology
Year:
2022
Document type:
Article
Country of publication:
CHINA
/
CN
/
REPUBLIC OF CHINA