This enzyme recycles the H(2) produced by nitrogenase to increase the production of ATP and to protect nitrogenase against inhibition or damage by O(2) under carbon- or phosphate-limited conditions. hupB Hydrogenlyase Membrane-bound hydrogenase large subunit hupL MBHL_RHOCA MTTQTPNGFTLDNAGKRIVVDPVTRIEGHMRCEVNVNDQGIITNAVSTGTMWRGLEVILKGRDPRDAWAFTERICGVCTGTHALTSVRAVESALGITIPDNANSIRNMMQLNLQIHDHIVHFYHLHALDWVNPVNALRADPKATSELQQMVSPSHPLSSPGYFRDVQNRLKKFVESGQLGLFKNGYWDNPAYKLPPEADLMATTHYLEALDLQKEVVKVHTIFGGKNPHPNWLVGGVPCPINVDGVGAVGAINMERLNLVSSIIDRCTEFTRNVYLPDLKAIGGFYKEWLYGGGLSGQSVLSYGDIPENPNDFSAGQLHLPRGAIINGNLNEVHDVDTTDPEQVQEFVDHSWYDYGEPGMGLHPWDGRTEPKFELGPNLKGTRTNIENIDEGAKYSWIKAPRWRGNAMEVGPLAATSSVTRKGHEDIKNQVEGLLRDMNLPVSALFSTLGRTAARALEAEYCCRLQKHFFDKLVTNIKNGDSSTANVEKWDPSTWPKEAKGVGMTEAPRGALGHWVKIKDGRIENYQCVVPTTWNGSPRDSKGNIGAFEASLLNTKMERPEEPVEILRTLHSFDPCLACSTHVMSAEGAPLTTVKVR 597 Uptake hydrogenase large subunit