HHsearch alignment for GI: 254781066 and conserved domain: cd00773

>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.
Probab=99.07  E-value=9.9e-09  Score=71.14  Aligned_cols=100  Identities=18%  Similarity=0.238  Sum_probs=63.1

Q ss_pred             HHHHHHHHHHHHHHHHCCCEEEECCCEECCC-----CCCC-CCCCEEEECCCCCCCCCCCCCC--CCHHHHHHHHHHHHH
Q ss_conf             9999999999999998798898478210568-----9854-4541241024788678320000--285899998987446
Q gi|254781066|r   23 LKRNMIQSSLREYFVENQFIEIDSMSLQYSP-----GNET-HIRAFSTELIIQDHIRKPLYLQ--TSPEFSCKKLLAAGE   94 (355)
Q Consensus        23 ~~Rs~i~~~iR~ff~~~gF~EV~TPiL~~~~-----~g~~-~~~~f~t~~~~~~~~~~~~yL~--~SPql~lK~ll~~G~   94 (355)
T Consensus         3 ~~r~~i~~~l~~~f~~~Gy~~I~~P~lE~~d~~~~~~~~~~~~~~~~f~----D~~g~~l~LRpD~T~~ia--R~~~~~~   76 (261)
T cd00773           3 ALRRYIEDTLREVFERYGYEEIDTPVFEYTELFLRKSGDEVSKEMYRFK----DKGGRDLALRPDLTAPVA--RAVAENL   76 (261)
T ss_pred             HHHHHHHHHHHHHHHHCCCEEEECCCCCCHHHHCCCCCCCCHHCEEEEE----CCCCCEEEECCCCCHHHH--HHHHHHH
T ss_conf             8999999999999998699786677645276752446531021169999----799998976786627999--9999741


Q ss_pred             ------HHHHHHHHHHCCCCCCCCCCCCEEEECEEECCCC
Q ss_conf             ------8899988642456777544843002000115776
Q gi|254781066|r   95 ------EKIFCFAHAWRNGEQGCLHQPEFTMLEWYRAHES  128 (355)
Q Consensus        95 ------~rvyqig~~FRaE~~~~rHlpEFtmLE~e~af~d  128 (355)
T Consensus        77 ~~~~~p~r~~Y~g~VfR~~~~~~g~~rE~~Q~G~EiiG~~  116 (261)
T cd00773          77 LSLPLPLKLYYIGPVFRYERPQKGRYREFYQVGVEIIGSD  116 (261)
T ss_pred             CCCCCCEEEEEECCEEEECCCCCCCCCCCCCEEEEEECCC
T ss_conf             5378885899973189976899998443221469997289