RPSBLAST alignment for GI: 254780363 and conserved domain: cd00322

>gnl|CDD|99778 cd00322, FNR_like, Ferredoxin reductase (FNR), an FAD and NAD(P) binding protein, was intially identified as a chloroplast reductase activity, catalyzing the electron transfer from reduced iron-sulfur protein ferredoxin to NADP+ as the final step in the electron transport mechanism of photosystem I. FNR transfers electrons from reduced ferredoxin to FAD (forming FADH2 via a semiquinone intermediate) and then transfers a hydride ion to convert NADP+ to NADPH. FNR has since been shown to utilize a variety of electron acceptors and donors and has a variety of physiological functions including nitrogen assimilation, dinitrogen fixation, steroid hydroxylation, fatty acid metabolism, oxygenase activity, and methane assimilation in many organisms. FNR has an NAD(P)-binding sub-domain of the alpha/beta class and a discrete (usually N-terminal) flavin sub-domain which vary in orientation with respect to the NAD(P) binding domain. The N-terminal moeity may contain a flavin prosthetic group (as in flavoenzymes) or use flavin as a substrate. Because flavins such as FAD can exist in oxidized, semiquinone (one- electron reduced), or fully reduced hydroquinone forms, FNR can interact with one and 2 electron carriers. FNR has a strong preference for NADP(H) vs NAD(H).. Length = 223
 Score = 92.9 bits (231), Expect = 9e-20
 Identities = 55/237 (23%), Positives = 97/237 (40%), Gaps = 25/237 (10%)

Query: 18  ISIKHYTDRLFRFCITRPKSFRFRSGEFVMLGLMVNGRRISRAYSMASPCWDDK--LEFF 75
           ++ +  TD +  F +  P  F F+ G++V L L  +GR + RAYS+AS   D++  LE  
Sbjct: 1   VATEDVTDDVRLFRLQLPNGFSFKPGQYVDLHLPGDGRGLRRAYSIASS-PDEEGELELT 59

Query: 76  SIKVEQGPLTTHLQNIQPGDTI-LLHKKSTGTLVLDALIPGNRLYLFSTGTGIAPFVSVI 134
              V  GP +  L +++PGD + +        L L+       + L + G GI PF S++
Sbjct: 60  VKIVPGGPFSAWLHDLKPGDEVEVSGPGGDFFLPLE---ESGPVVLIAGGIGITPFRSML 116

Query: 135 RD-PGTYEKFDEVIVTQTCRQVVELQYGIDVMHEISQDEILKDLI--GQKLKFYRTVTQE 191
           R         +  ++    R   +L +          DE L++L   G   +    +++E
Sbjct: 117 RHLAADKPGGEITLLYG-ARTPADLLF---------LDE-LEELAKEGPNFRLVLALSRE 165

Query: 192 DYLYKGRITNHILSGEFYRNMDLSPLNPDTDRIMICGSPTMIVDMKDLLIAKKFREG 248
                G         E          +     + ICG P M   +++ L++    E 
Sbjct: 166 SEAKLGPGGRIDREAEI----LALLPDDSGALVYICGPPAMAKAVREALVSLGVPEE 218