>gnl|CDD|48369 cd02040, NifH, NifH gene encodes component II (iron protein) of nitrogenase. Nitrogenase is responsible for the biological nitrogen fixation, i.e. reduction of molecular nitrogen to ammonia. NifH consists of two oxygen-sensitive metallosulfur proteins: the mollybdenum-iron (alternatively, vanadium-iron or iron-iron) protein (commonly referred to as component 1), and the iron protein (commonly referred to as component 2). The iron protein is a homodimer, with an Fe4S4 cluster bound between the subunits and two ATP-binding domains. It supplies energy by ATP hydrolysis, and transfers electrons from reduced ferredoxin or flavodoxin to component 1 for the reduction of molecular nitrogen to ammonia.. Length = 270

Score = 44.0 bits (104), Expect = 5e-05 Identities = 63/261 (24%), Positives = 113/261 (43%), Gaps = 50/261 (19%) Query: 103 GKGGVGKSTTVVNIACALKNKGKNVAILDAD------------VYGPSIPKLLKISGKVE 150 GKGG+GKSTT N++ AL GK V I+ D P++ L+ G+VE Sbjct: 8 GKGGIGKSTTTQNLSAALAEMGKKVMIVGCDPKADSTRLLLGGKAIPTVLDTLREKGEVE 67 Query: 151 ISDKKFLKPKENYGIKIMSMASLVDENVAMIWRGPMVQSAIMHMLHNVVWGQLDFLLID- 209 + + + GIK + + + V RG + ++ L LDF++ D Sbjct: 68 LELEDVIFEGFG-GIKCVE-SGGPEPGVGCAGRGVITAINLLEEL-GAYEDDLDFVIYDV 124 Query: 210 ----------MPPGTGDAHLTIAQKIPLSGVVIVSTPQDLALI---DVKRAISMYQKM-N 255 MP G AQ+I IV++ + +AL ++ + I Y K Sbjct: 125 LGDVVCGGFAMPIREG-----KAQEI-----YIVTSGEMMALYAANNICKGILKYAKSGG 174 Query: 256 IPIIGMIENMSYFLASDTGKKYDLFGNGGARFEAEKIGIPFLESVPFDMDVRVLSDLGIP 315 + + G+I N + +T ++ +L F A+++G + VP D V+ G Sbjct: 175 VRLGGLICN-----SRNTDREDELI----DAF-AKRLGTQMIHFVPRDNVVQRAELRGKT 224 Query: 316 IVVHNMNSATSEIYQEISDRI 336 ++ ++ S ++ Y+E++ +I Sbjct: 225 VIEYDPESKQADEYRELARKI 245

RPSBLAST alignment for GI: 254780831 and conserved domain: cd02040