The genome sequence of the capnophilic rumen bacterium Mannheimia succiniciproducens.
The rumen represents the first section of a ruminant animal's stomach, where feed is collected and mixed with microorganisms for initial digestion. The major gas produced in the rumen is CO(2) (65.5 mol%), yet the metabolic characteristics of capnophilic (CO(2)-loving) microorganisms are not well understood. Here we report the 2,314,078 base pair genome sequence of Mannheimia succiniciproducens MBEL55E, a recently isolated capnophilic Gram-negative bacterium from bovine rumen, and analyze its genome contents and metabolic characteristics. The metabolism of M. succiniciproducens was found to be well adapted to the oxygen-free rumen by using fumarate as a major electron acceptor. Genome-scale metabolic flux analysis indicated that CO(2) is important for the carboxylation of phosphoenolpyruvate to oxaloacetate, which is converted to succinic acid by the reductive tricarboxylic acid cycle and menaquinone systems. This characteristic metabolism allows highly efficient production of succinic acid, an important four-carbon industrial chemical.
Hong
Soon Ho
SH
Department of Chemical and Biomolecular Engineering, BioProcess Engineering Research Center, Rese Korea Advanced Institute of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea.
Kim
Jin Sik
JS
Lee
Sang Yup
SY
In
Yong Ho
YH
Choi
Sun Shim
SS
Rih
Jeong-Keun
JK
Kim
Chang Hoon
CH
Jeong
Haeyoung
H
Hur
Cheol Goo
CG
Kim
Jae Jong
JJ
D000595:Amino Acid Sequence; D000818:Animals; D001426:Bacterial Proteins / Q000235:genetics / Q000378:metabolism; D001483:Base Sequence; D002245:Carbon Dioxide / Q000378:metabolism*; D002874:Chromosome Mapping / Q000379:methods*; D015964:Gene Expression Regulation, Bacterial / Q000502:physiology*; D016680:Genome, Bacterial; D031121:Mannheimia / Q000235:genetics* / Q000378:metabolism*; D008954:Models, Biological; D008969:Molecular Sequence Data; D020543:Proteome / Q000235:genetics / Q000378:metabolism*; D012417:Rumen / Q000382:microbiology; D019802:Succinic Acid / Q000378:metabolism
D001426:Bacterial Proteins; D020543:Proteome; D002245:Carbon Dioxide; D019802:Succinic Acid