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