» Articles » PMID: 12406733

Effect of Pyruvate Carboxylase Overexpression on the Physiology of Corynebacterium Glutamicum

Overview
Date 2002 Oct 31
PMID 12406733
Citations 14
Authors
Affiliations
Soon will be listed here.
Abstract

Pyruvate carboxylase was recently sequenced in Corynebacterium glutamicum and shown to play an important role of anaplerosis in the central carbon metabolism and amino acid synthesis of these bacteria. In this study we investigate the effect of the overexpression of the gene for pyruvate carboxylase (pyc) on the physiology of C. glutamicum ATCC 21253 and ATCC 21799 grown on defined media with two different carbon sources, glucose and lactate. In general, the physiological effects of pyc overexpression in Corynebacteria depend on the genetic background of the particular strain studied and are determined to a large extent by the interplay between pyruvate carboxylase and aspartate kinase activities. If the pyruvate carboxylase activity is not properly matched by the aspartate kinase activity, pyc overexpression results in growth enhancement instead of greater lysine production, despite its central role in anaplerosis and aspartic acid biosynthesis. Aspartate kinase regulation by lysine and threonine, pyruvate carboxylase inhibition by aspartate (shown in this study using permeabilized cells), as well as well-established activation of pyruvate carboxylase by lactate and acetyl coenzyme A are the key factors in determining the effect of pyc overexpression on Corynebacteria physiology.

Citing Articles

Improvement of succinate production from methane by combining rational engineering and laboratory evolution in Methylomonas sp. DH-1.

Jo J, Park J, Kim B, Kim S, Park C, Kang C Microb Cell Fact. 2024; 23(1):297.

PMID: 39497114 PMC: 11533326. DOI: 10.1186/s12934-024-02557-0.


Model-guided metabolic rewiring to bypass pyruvate oxidation for pyruvate derivative synthesis by minimizing carbon loss.

Zhang Y, Wang X, Odesanmi C, Hu Q, Li D, Tang Y mSystems. 2024; 9(3):e0083923.

PMID: 38315666 PMC: 10949502. DOI: 10.1128/msystems.00839-23.


Model-Guided Metabolic Rewiring for Gamma-Aminobutyric Acid and Butyrolactam Biosynthesis in Corynebacterium glutamicum ATCC13032.

Zhang Y, Zhao J, Wang X, Tang Y, Liu S, Wen T Biology (Basel). 2022; 11(6).

PMID: 35741367 PMC: 9219837. DOI: 10.3390/biology11060846.


Enhanced production of γ-amino acid 3-amino-4-hydroxybenzoic acid by recombinant Corynebacterium glutamicum under oxygen limitation.

Kawaguchi H, Hasunuma T, Ohnishi Y, Sazuka T, Kondo A, Ogino C Microb Cell Fact. 2021; 20(1):228.

PMID: 34949178 PMC: 8697445. DOI: 10.1186/s12934-021-01714-z.


Metabolic engineering of Corynebacterium glutamicum for enhanced production of 5-aminovaleric acid.

Shin J, Park S, Oh Y, Choi J, Lee M, Cho J Microb Cell Fact. 2016; 15(1):174.

PMID: 27717386 PMC: 5054628. DOI: 10.1186/s12934-016-0566-8.


References
1.
Eikmanns B . Identification, sequence analysis, and expression of a Corynebacterium glutamicum gene cluster encoding the three glycolytic enzymes glyceraldehyde-3-phosphate dehydrogenase, 3-phosphoglycerate kinase, and triosephosphate isomerase. J Bacteriol. 1992; 174(19):6076-86. PMC: 207673. DOI: 10.1128/jb.174.19.6076-6086.1992. View

2.
Stephanopoulos G, Vallino J . Network rigidity and metabolic engineering in metabolite overproduction. Science. 1991; 252(5013):1675-81. DOI: 10.1126/science.1904627. View

3.
Cazzulo J, Sundaram T, Kornberg H . Regulation of pyruvate carboxylase formation from the apo-enzyme and biotin in a thermophilic bacillus. Nature. 1969; 223(5211):1137-8. DOI: 10.1038/2231137a0. View

4.
Hartman R . Carbon dioxide fixation by extracts of Streptococcus faecalis var. liquefaciens. J Bacteriol. 1970; 102(2):341-6. PMC: 247556. DOI: 10.1128/jb.102.2.341-346.1970. View

5.
White P . Activities of anaplerotic enzymes and acetyl coenzyme A carboxylase in biotin-deficient Bacillus megaterium. J Gen Microbiol. 1977; 100(1):203-6. DOI: 10.1099/00221287-100-1-203. View