RPSBLAST alignment for GI: 254780999 and conserved domain: cd00553

>gnl|CDD|30166 cd00553, NAD_synthase, NAD+ synthase is a homodimer, which catalyzes the final step in de novo nicotinamide adenine dinucleotide (NAD+) biosynthesis, an amide transfer from either ammonia or glutamine to nicotinic acid adenine dinucleotide (NaAD). The conversion of NaAD to NAD+ occurs via an NAD-adenylate intermediate and requires ATP and Mg2+. The intemediate is subsequently cleaved into NAD+ and AMP. In many prokaryotes, such as E. coli , NAD synthetase consists of a single domain and is strictly ammonia dependent. In contrast, eukaryotes and other prokaryotes have an additional N-terminal amidohydrolase domain that prefer glutamine, Interestingly, NAD+ synthases in these prokaryotes, can also utilize ammonia as an amide source .. Length = 248
 Score =  270 bits (692), Expect = 8e-73
 Identities = 106/262 (40%), Positives = 151/262 (57%), Gaps = 16/262 (6%)

Query: 270 QEEEADYNACVLSLRDYVQKNNFHKVIIGLSGGIDSALCAAIAVDALGKENVQTIMLPYK 329
           ++ E   NA VL LRDY++K+ F  V++GLSGGIDSAL AA+AV ALG+ENV  + +P +
Sbjct: 1   EDLEEIINALVLFLRDYLRKSGFKGVVLGLSGGIDSALVAALAVRALGRENVLALFMPSR 60

Query: 330 YTSPQSLEDAAACAKALGCKYDVLPIHDLVNHFFSLMSQFLQEEPSGIVAENIQSRIRGN 389
           Y+S ++ EDA   A+ALG ++  + I   V  F +L+ +    E   +   NIQ+R+R  
Sbjct: 61  YSSEETREDAKELAEALGIEHVNIDIDPAVEAFLALLGESGGSELEDLALGNIQARLRMV 120

Query: 390 ILMALSNHSKAMLLTTSNKSEISVGYGTLYGDMSGGFNPLKDLYKTQVFQLASWRNSHGI 449
           IL AL+N    ++L T NKSE+ +GY T YGD +   NP+ DLYKTQV +LA +      
Sbjct: 121 ILYALANKLGGLVLGTGNKSELLLGYFTKYGDGAADINPIGDLYKTQVRELARYLG---- 176

Query: 450 TSGLGPLTEVIPPSILEKSPSAELRPHQTDQESLP-PYPILDDIIKRIVENEES-FINND 507
                     +P SI++K PSAEL P QTD++ L  PY  LD  +   +E          
Sbjct: 177 ----------VPESIIDKPPSAELWPGQTDEDELGMPYEELDQFLYLRLEGGLGPEEILA 226

Query: 508 QEYNDETVRYVEHLLYGSEYKR 529
               +E V+ V  L   +E+KR
Sbjct: 227 PGIIEEVVKRVFRLYKKNEHKR 248