RPSBLAST alignment for GI: 254780928 and conserved domain: cd00773
>gnl|CDD|73226 cd00773, HisRS-like_core, Class II Histidinyl-tRNA synthetase (HisRS)-like catalytic core domain. HisRS is a homodimer. It is responsible for the attachment of histidine to the 3' OH group of ribose of the appropriate tRNA. This domain is primarily responsible for ATP-dependent formation of the enzyme bound aminoacyl-adenylate. Class II assignment is based upon its structure and the presence of three characteristic sequence motifs. This domain is also found at the C-terminus of eukaryotic GCN2 protein kinase and at the N-terminus of the ATP phosphoribosyltransferase accessory subunit, HisZ. HisZ along with HisG catalyze the first reaction in histidine biosynthesis. HisZ is found only in a subset of bacteria and differs from HisRS in lacking a C-terminal anti-codon binding domain.. Length = 261
Score = 207 bits (529), Expect = 5e-54
Identities = 105/342 (30%), Positives = 166/342 (48%), Gaps = 81/342 (23%)
Query: 22 EIRIRNRILDSIRNIYENYGFDPIETPLLEYSDSLGKFLPDEDRPNKGVFSLQDDDGQWI 81
E +R I D++R ++E YG++ I+TP+ EY++ + DE K ++ +D G+ +
Sbjct: 1 EAALRRYIEDTLREVFERYGYEEIDTPVFEYTELFLRKSGDEVS--KEMYRFKDKGGRDL 58
Query: 82 SLRYDLTAPLARYVAENFDTIVFPCRTYRIGPVFRNEKHGPGRFRQFIQCDVDNVGSSAE 141
+LR DLTAP+AR VAEN ++ P + Y IGPVFR E+ GR+R+F Q V+ +GS +
Sbjct: 59 ALRPDLTAPVARAVAENLLSLPLPLKLYYIGPVFRYERPQKGRYREFYQVGVEIIGSDSP 118
Query: 142 TADAEMCMMMADTLEAVGIKRNDYHIGINNRKILDGILEKIGLHGDDKLNERLIVLRAID 201
ADAE+ + + LEA+ G+ + +I K+N R I
Sbjct: 119 LADAEVIALAVEILEAL---------GLKDFQI--------------KINHRGI------ 149
Query: 202 KLDKFGLQGVKLLLGEGRTDNSGDFTKGANLTSEQIDIMVSFLSIDLEKSMHELYELVKG 261
L G+ LL + E I+ ++ L + + +L + ++
Sbjct: 150 ------LDGIAGLLEDRE---------------EYIERLIDKLDKEALAHLEKLLDYLEA 188
Query: 262 TIAGEKGFNELVVISELVRKSGYNSNRIKISSTIVRGLEYYTGCVYEAILGFPVMNEKQK 321
K I ++VRGL+YYTG V+EA+
Sbjct: 189 LGVDIK---------------------YSIDLSLVRGLDYYTGIVFEAVA--------DG 219
Query: 322 PVVFGSVGGGGRYDGLVSRFKGQNVPATGFSIGISRLIVALK 363
GS+ GGGRYDGL+ F G++VPA GF+IG+ RL++AL+
Sbjct: 220 LGAQGSIAGGGRYDGLLEEFGGEDVPAVGFAIGLERLLLALE 261