The eight ccm genes located at minute 47 on the Escherichia coli chromosome, in the order ccmABCDEFGH, encode homologues of proteins which are essential for cytochrome c assembly in other bacteria. The ccm genes are immediately downstream from the napFDAGHBC genes encoding a periplasmic nitrate reductase. CcmH was previously shown to be essential for cytochrome c assembly. Deletion analysis and...

The electrolyte solution of NaBOB in TEP is a low-cost, fluorine-free and flame-retardant with ionic conductivity 5 mS cm −1 , recently discovered to show promises for sodium-ion batteries. Here, the abilities this effectively form solid interphase (SEI) was augmented five common additives fluoroethylene carbonate (FEC), vinylene (VC), prop-1-ene-1,3-sultone (PES), 1,3,2-dioxathiolane 2,2-dioxi...

BACKGROUND AND THE PURPOSE OF THE STUDY Ofloxacin is a quinolone synthetic antibiotic, which acts against resistant mutants of bacteria by inhibiting DNA gyrase. This antibacterial agent is widely used in the treatment of respiratory tract, urinary tract and tissue-based infections, which are caused by Gram-positive and Gram-negative bacteria. In this work, an efficient modified ionic liquid co...

Nap (periplasmic nitrate reductase) operons of many bacteria include four common, essential components, napD, napA, napB and napC (or a homologue of napC ). In Escherichia coli there are three additional genes, napF, napG and napH, none of which are essential for Nap activity. We now show that deletion of either napG or napH almost abolished Nap-dependent nitrate reduction by strains defective ...