DNA gyrase subunit B; A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to modulate DNA topology and maintain chromosomes in an underwound state. Negative supercoiling favors strand separation, and DNA replication, transcription, recombination and repair, all of which involve strand separation. Also able to catalyze the interconversion of other topological isomers of dsDNA rings, including catenanes and knotted rings. Type II topoisomerases break and join 2 DNA strands simultaneously in an ATP-dependent manner.

30S ribosomal protein S19; Protein S19 forms a complex with S13 that binds strongly to the 16S ribosomal RNA.

ATP synthase subunit b/delta; Component of the F(0) channel, it forms part of the peripheral stalk, linking F(1) to F(0). This protein is part of the stalk that links CF(0) to CF(1). It either transmits conformational changes from CF(0) to CF(1) or is implicated in proton conduction; Belongs to the ATPase delta chain family.

Transcription termination/antitermination protein NusA; Participates in both transcription termination and antitermination.

Methyltransferase; Overlaps another CDS with the same product name; Belongs to the class I-like SAM-binding methyltransferase superfamily. RsmB/NOP family.

Methyltransferase; Overlaps another CDS with the same product name; Belongs to the class I-like SAM-binding methyltransferase superfamily. RsmB/NOP family.

GMP synthase.

ATP synthase subunit gamma; Produces ATP from ADP in the presence of a proton gradient across the membrane. The gamma chain is believed to be important in regulating ATPase activity and the flow of protons through the CF(0) complex.