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1. Yoon  JH, Lee  CH, Oh  TK,     ( 2005 )

Bacillus cibi sp. nov., isolated from jeotgal, a traditional Korean fermented seafood.

International journal of systematic and evolutionary microbiology 55 (Pt 2)
PMID : 15774653  :   DOI  :   10.1099/ijs.0.63208-0     DOI  :   10.1099/ijs.0.63208-0    
Abstract >>
A Gram-variable, motile, endospore-forming, halotolerant bacillus, strain JG-30(T), was isolated from the traditional Korean fermented seafood jeotgal, and was subjected to a polyphasic taxonomic study. This organism grew optimally at 37 degrees C and in the presence of 0-1 % (w/v) NaCl. 16S rRNA gene sequence analysis showed that strain JG-30(T) forms a distinct phylogenetic lineage within the evolutionary radiation encompassed by the genus Bacillus. Strain JG-30(T) was characterized chemotaxonomically as having cell-wall peptidoglycan based on meso-diaminopimelic acid, MK-7 as the predominant menaquinone and iso-C(15 : 0) and iso-C(14 : 0) as the major fatty acids. The DNA G+C content was 45 mol%. Strain JG-30(T) exhibited levels of 16S rRNA gene sequence similarity of less than 95.7 % to Bacillus species with validly published names. On the basis of its phenotypic properties and phylogenetic distinctiveness, strain JG-30(T) (=KCTC 3880(T)=DSM 16189(T)) was classified within the genus Bacillus as a novel species, for which the name Bacillus cibi sp. nov. is proposed.
KeywordMeSH Terms
2. Steiger  S, Perez-Fons  L, Cutting  SM, Fraser  PD, Sandmann  G,     ( 2015 )

Annotation and functional assignment of the genes for the C30 carotenoid pathways from the genomes of two bacteria: Bacillus indicus and Bacillus firmus.

Microbiology (Reading, England) 161 (Pt 1)
PMID : 25326460  :   DOI  :   10.1099/mic.0.083519-0    
Abstract >>
Bacillus indicus and Bacillus firmus synthesize C30 carotenoids via farnesyl pyrophosphate, forming apophytoene as the first committed step in the pathway. The products of the pathways were methyl 4'-[6-O-acyl-glycosyl)oxy]-4,4'-diapolycopen-4-oic acid and 4,4'-diapolycopen-4,4'-dioic acid with putative glycosyl esters. The genomes of both bacteria were sequenced, and the genes for their early terpenoid and specific carotenoid pathways annotated. All genes for a functional 1-deoxy-d-xylulose 5-phosphate synthase pathway were identified in both species, whereas genes of the mevalonate pathway were absent. The genes for specific carotenoid synthesis and conversion were found on gene clusters which were organized differently in the two species. The genes involved in the formation of the carotenoid cores were assigned by functional complementation in Escherichia coli. This bacterium was co-transformed with a plasmid mediating the formation of the putative substrate and a second plasmid with the gene of interest. Carotenoid products in the transformants were determined by HPLC. Using this approach, we identified the genes for a 4,4'-diapophytoene synthase (crtM), 4,4'-diapophytoene desaturase (crtNa), 4,4'-diapolycopene ketolase (crtNb) and 4,4'-diapolycopene aldehyde oxidase (crtNc). The three crtN genes were closely related and belonged to the crtI gene family with a similar reaction mechanism of their enzyme products. Additional genes encoding glycosyltransferases and acyltransferases for the modification of the carotenoid skeleton of the diapolycopenoic acids were identified by comparison with the corresponding genes from other bacteria.
KeywordMeSH Terms
Biosynthetic Pathways
Genes, Bacterial
Genome, Bacterial

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