Characterization of the complete plastome sequence of Korean endemic, H.Lév. (Brassicaceae, Brassicales).

In this study, we report the complete plastome sequence of H.Lév. 1913 (NCBI acc.

Glutamine-induced production and secretion of Helicobacter pylori gamma-glutamyltranspeptidase at low pH and its putative role in glutathione transport.

Helicobacter pylori increased the gamma-glutamyltranspeptidase (GGT) production under low-pH (maximal at pH 4) and appropriate pCO2 conditions, while the production of GGT mRNA correlated with increased total enzyme activity. At pH 4, the bacterium augmented enzyme production in the presence of glutamine (~10 mM) in the medium, which predominantly occurred after a 6-min time-lag. Monovalent salts such as NaCl or NH4Cl facilitated enzymatic activation in acidic solutions of approximately pH 4.

Characterization of Bacillus phage-K2 isolated from chungkookjang, a fermented soybean foodstuff.

An investigation of a virulent Bacillus phage-K2 (named Bp-K2) isolated from chungkookjang (a fermented soybean foodstuff) was made. Bp-K2 differed in infectivity against a number of Bacillus subtilis strains including starter strains of chungkookjang and natto, being more infectious to Bacillus strains isolated from the chungkookjang, but much less active against a natto strain. Bp-K2 is a small DNA phage whose genome size is about 21 kb.

Iso-superoxide dismutase in Deinococcus grandis, a UV resistant bacterium.

Deinococcus grandis possesses two types of superoxide dismutase (SOD, E. C. 1.

Molecular cloning and characterization of the alcohol dehydrogenase ADH1 gene of Candida utilis ATCC 9950.

The alcohol dehydrogenase gene (ADH1) of Candida utilis ATCC9950 was cloned and expressed in recombinant Escherichia coli. C. utilis ADH1 was obtained by PCR amplification of C.

Chemotaxonomic and phylogenetic analyses of Sphingomonas strains isolated from ears of plants in the family Gramineae and a proposal of Sphingomonas roseoflava sp. nov.

Chemotaxonomic and phylogenetic characteristics of Sphingomonas strains isolated from plants of the family Gramineae were investigated. All strains contained the monosaccharide (glucuronic acid) type of glycosphingolipid (GSL-1). Most were found also to contain the oligosaccharide-type glycosphingolipids.

A novel five-subunit-type 2-oxoglutalate:ferredoxin oxidoreductases from Hydrogenobacter thermophilus TK-6.

A thermophilic, chemolithoautotrophic hydrogen-oxidizing bacterium, Hydrogenobacter thermophilus TK-6, fixes carbon dioxide via the reductive TCA cycle. 2-Oxoglutarate:ferredoxin oxidoreductase (OGOR) of this strain is one of the key enzymes of the pathway. OGOR of strain TK-6 has been reported to be a two-subunit-type OGOR and encoded by korAB.