RPSBLAST alignment for GI: 254780859 and conserved domain: cd02752

>gnl|CDD|73320 cd02752, MopB_Formate-Dh-Na-like, Formate dehydrogenase N, alpha subunit (Formate-Dh-Na) is a major component of nitrate respiration in bacteria such as in the E. coli formate dehydrogenase N (Fdh-N). Fdh-N is a membrane protein that is a complex of three different subunits and is the major electron donor to the nitrate respiratory chain. Also included in this CD is the Desulfovibrio gigas tungsten formate dehydrogenase, DgW-FDH. In contrast to Fdh-N, which is a functional heterotrimer, DgW-FDH is a heterodimer. The DgW-FDH complex is composed of a large subunit carrying the W active site and one [4Fe-4S] center, and a small subunit that harbors a series of three [4Fe-4S] clusters as well as a putative vacant binding site for a fourth cluster. The smaller subunit is not included in this alignment. Members of the MopB_Formate-Dh-Na-like CD belong to the molybdopterin_binding (MopB) superfamily of proteins.. Length = 649
 Score = 44.2 bits (104), Expect = 1e-04
 Identities = 36/152 (23%), Positives = 58/152 (38%), Gaps = 21/152 (13%)

Query: 456 GQGALRASDNVEVMANIAKLVIDVGGISDSWNGFAVLHTVASRVGALDLGFVPADDTINA 515
           G  ALR   NV+          D+G +S +  G+       S        F  A+    A
Sbjct: 311 GVNALRGHSNVQGAT-------DLGLLSHNLPGYLGGQNPNS-------SFPNANKVRRA 356

Query: 516 MNILDKTDIVFLLGADELDFSDKQALTVYIGSHGDRGAQSADVILPGAAYTEKSGLWVNT 575
           ++ LD   ++     +   F     +         +  Q+   +LP A   EK G   N+
Sbjct: 357 LDKLDWLVVIDPFPTETAAFWKNPGMD-------PKSIQTEVFLLPAACQYEKEGSITNS 409

Query: 576 EGRVQMGMRAIFPPGDAKEDWEIICALADELK 607
              +Q   + + PPG+AK D +I+  LA  L 
Sbjct: 410 GRWLQWRYKVVEPPGEAKSDGDILVELAKRLG 441