RPSBLAST alignment for GI: 254781004 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 = 42.1 bits (99), Expect = 4e-04
 Identities = 35/166 (21%), Positives = 55/166 (33%), Gaps = 34/166 (20%)

Query: 274 KIFQTLISYMRRKIKDDYEEINTPQVLDQHLWQQSGHWDSYRANMFAVKCADDTIKDL-- 331
            I  TL     R     YEEI+TP                    +F  K  D+  K++  
Sbjct: 7   YIEDTLREVFERY---GYEEIDTPVF--------------EYTELFLRKSGDEVSKEMYR 49

Query: 332 ------RTFALKPMNCPGHVAVFNHGLKSYRELPVRLAEFGSVYRNEPSGSLHGLMRVRG 385
                 R  AL+P                   LP++L   G V+R E         R R 
Sbjct: 50  FKDKGGRDLALRPDLTAPVARAVAEN-LLSLPLPLKLYYIGPVFRYERPQKG----RYRE 104

Query: 386 FTQDDAHVFCTKEQMFN-ECLKIHNLIISIYKDFGFEKIMVKLSTR 430
           F Q    +  +   + + E +    L + I +  G +   +K++ R
Sbjct: 105 FYQVGVEIIGSDSPLADAEVIA---LAVEILEALGLKDFQIKINHR 147