Copyright information:Taken from "Analysis of and function predictions for previously conserved hypothetical or putative proteins in "BMC Microbiology 2006;6():1-1.Published online 9 Jan 2006PMCID:PMC1360075.Copyright © 2006 Gaudermann et al; licensee BioMed Central Ltd.y of nitrogen metabolism. They involve the urease complex (Bfl523, Bfl524 and Bfl525; catalyzing the following reaction: Urea + HO = CO+ 2 NH) and urease activating complex (Bfl521, Bfl522 and Bfl526) and glutamine synthetase (Bfl618). Further proteins adding to the pathway are the now confirmed ferredoxin (Bfl 480), Bfl 573 (NifU-like protein; previously conserved hypothetical) as well as beta-cystathionase (Bfl067).