RPSBLAST alignment for GI: 254780420 and conserved domain: cd01653
>gnl|CDD|153210 cd01653, GATase1, Type 1 glutamine amidotransferase (GATase1)-like domain. Type 1 glutamine amidotransferase (GATase1)-like domain. This group includes proteins similar to Class I glutamine amidotransferases, the intracellular PH1704 from Pyrococcus horikoshii, the C-terminal of the large catalase: Escherichia coli HP-II, Sinorhizobium meliloti Rm1021 ThuA. and, the A4 beta-galactosidase middle domain. The majority of proteins in this group have a reactive Cys found in the sharp turn between a beta strand and an alpha helix termed the nucleophile elbow. For Class I glutamine amidotransferases proteins which transfer ammonia from the amide side chain of glutamine to an acceptor substrate, this Cys forms a Cys-His-Glu catalytic triad in the active site. Glutamine amidotransferases activity can be found in a range of biosynthetic enzymes included in this cd: glutamine amidotransferase, formylglycinamide ribonucleotide, GMP synthetase, anthranilate synthase component II, glutamine-dependent carbamoyl phosphate synthase, cytidine triphosphate synthetase, gamma-glutamyl hydrolase, imidazole glycerol phosphate synthase and, cobyric acid synthase. For Pyrococcus horikoshii PH1704, the Cys of the nucleophile elbow together with a different His and, a Glu from an adjacent monomer form a catalytic triad different from the typical GATase1 triad. The E. coli HP-II C-terminal domain, S. meliloti Rm1021 ThuA and the A4 beta-galactosidase middle domain lack the catalytic triad typical GATaseI domains. GATase1-like domains can occur either as single polypeptides, as in Class I glutamine amidotransferases, or as domains in a much larger multifunctional synthase protein, such as CPSase. Length = 115
Score = 55.3 bits (133), Expect = 3e-08
Identities = 25/84 (29%), Positives = 39/84 (46%), Gaps = 6/84 (7%)
Query: 218 NLLRVLSSLGCRITIVGAE--TSYKDIMSLQPDGVLLSNGPGDPAVTSVYSSPI--ICKL 273
+ L L G + +V + D+ DG++L GPG P + + + + +
Sbjct: 16 SPLDALREAGAEVDVVSPDGGPVESDVDLDDYDGLILPGGPGTPDDLARDEALLALLREA 75
Query: 274 VDSGMPMFGICLGHQLLGLALGAQ 297
+G P+ GICLG QL L LG Q
Sbjct: 76 AAAGKPILGICLGAQL--LVLGVQ 97