RPSBLAST alignment for GI: 254780151 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 = 49.0 bits (117), Expect = 2e-06
Identities = 49/219 (22%), Positives = 83/219 (37%), Gaps = 67/219 (30%)
Query: 23 VVVAMSGGVDSSVVAALLKR--DGYDVIGVTLQLYNSRKASKRKGSCCAGQDVYDARRVC 80
VV+ +SGG+DS++VAAL R +V+ + + S + ++ DA+ +
Sbjct: 26 VVLGLSGGIDSALVAALAVRALGRENVLALFMPSRYSSEETRE-----------DAKELA 74
Query: 81 DTINVSHYVFDYEERFRNAVIVPFASSYAAGETPLPCVDCNRTVK--------FSDLLSV 132
+ + + H D I P ++ A + L ++
Sbjct: 75 EALGIEHVNID---------IDPAVEAFLALLGESGGSELEDLALGNIQARLRMVILYAL 125
Query: 133 TRQLGADVLATGHYIRSRLYVG-----DDGKRRRIMCRPMDLERDQSYFLFATTQQQLCD 187
+LG VL TG+ +S L +G DG D
Sbjct: 126 ANKLGGLVLGTGN--KSELLLGYFTKYGDG---------------------------AAD 156
Query: 188 LRFPLGDMKKESVRDLAREMGL--DIADKSDSQDICFVQ 224
+ P+GD+ K VR+LAR +G+ I DK S ++ Q
Sbjct: 157 IN-PIGDLYKTQVRELARYLGVPESIIDKPPSAELWPGQ 194