>cd00418 GlxRS_core Glutamyl-tRNA synthetase(GluRS)/Glutaminyl-tRNA synthetase (GlnRS) cataytic core domain. These enzymes attach Glu or Gln, respectively, to the appropriate tRNA. Like other class I tRNA synthetases, they aminoacylate the 2'-OH of the nucleotide at the 3' end of the tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. These enzymes function as monomers. Archaea, cellular organelles, and some bacteria lack GlnRS. In these cases, the "non-descriminating" form of GluRS aminoacylates both tRNA(Glu) and tRNA(Gln) with Glu, which is converted to Gln when appropriate by a transamidation enzyme. The descriminating form of GluRS differs from GlnRS and the non-descriminating form of GluRS in their C-terminal anti-codon binding domains.

Probab=96.61 E-value=0.021 Score=36.17 Aligned_cols=180 Identities=21% Similarity=0.230 Sum_probs=99.4 Q ss_pred ECCCCCCCCHHHHHHHHHHHHHHHC-CCEEEEEEECHHHCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHH-HHCCCC Q ss_conf 4378762024348999999999985-98499998260111448898862102468899999999999998876-532677 Q gi|254780949|r 42 YDLTASSLHAGHLTQLMLLFWLQKT-GHKPISLMGGGTSIIGDPSFRDESRRMMRSQEIQENIEKIKGIFSSF-IKYGTG 119 (418) Q Consensus 42 ~DpT~~slH~G~l~~~~~l~~~q~~-Gh~~i~liG~~T~~IGDPsgk~~~R~~l~~~~i~~n~~~~~~q~~~~-~~~~~~ 119 (418) T Consensus 8 PsPtG~-LHiG~ar~al~n~~~Ak~~~G~~~L-------RieDT---D~~r~------~~e~~~~I~~dL~wLGl~~d-- 68 (223) T cd00418 8 PSPTGY-LHIGHARAALLNYLYAKKYGGKFIL-------RFDDT---DPERE------VEEAEDSILEDLKWLGIKWD-- 68 (223) T ss_pred CCCCCC-CCHHHHHHHHHHHHHHHHHCCEEEE-------EECCC---CCCCC------HHHHHHHHHHHHHHHCCCCC-- T ss_conf 898985-4289999999999999985998999-------72368---86401------88899999999999189999-- Q ss_pred CCCCEEEEHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHC--CCCEEC Q ss_conf 764023301675234313468887522344787534788887403568831578898989899999998542--970201 Q gi|254780949|r 120 KTDALMLNNETWLCSIKYIDLLREIGSFFSVNRMLSFESVRSRLKREQSLSFLEFNYMILQAYDFVELAKNY--DCRLQM 197 (418) Q Consensus 120 ~~~~~i~~N~~W~~~~~~~~~lr~~g~~~~v~~mL~rd~v~~Rl~~~~~is~~EF~Y~llQayD~~~L~~~~--~~~iqi 197 (418) T Consensus 69 ---~~~~~QS~r~~------~y~~~~~-----~Li~-----------~G------~~P---tY~fa~vVDD~~~gITHVi 114 (223) T cd00418 69 ---EGPYYQSDRFD------IYYEYAE-----KLIE-----------EG------GYP---TYDFAVVVDDHLMGITHVL 114 (223) T ss_pred ---CCEEEHHHHHH------HHHHHHH-----HHHH-----------CC------CCC---CEEEEEEECCCCCCCCEEE T ss_conf ---86853875899------9999999-----9975-----------69------981---4010258537657887565 Q ss_pred CCCHHHHHHHHHHHHHHHCCCCCEEEEEECEEECCCCHHHHHHHHCC--------CCCCCCCCCHHHHHHHHHHHCHHHH Q ss_conf 54125889988899997316797179831102368710223543101--------2333457997999998862078889 Q gi|254780949|r 198 GGSDQWGNIICGIDLGERLKTPKLFALTSPLLTTASGTKMGKTLSGA--------IWLNKEMTSPYNFWQYWRNIDDADV 269 (418) Q Consensus 198 GGsDQwgNi~~G~eLir~~~~~~~~glT~PLLt~~dG~KmgKS~~na--------IwLd~~~tSPy~fyQf~~n~~D~dV 269 (418) T Consensus 115 RG~D~~~~t~~q~~l~~aLg~~~P~~~H~p~l~~~~g~kLSKR~~~~~i~~~~~~gwdDprl~tl~~~r~--~G~~peai 192 (223) T cd00418 115 RGEEHLDNTPKQIWLYEALGWEPPVFAHFGRLNNEDGTKLSKRKLKKLVEEGIVEGWDDPRLPTLRGLRR--RGYLPEAL 192 (223) T ss_pred CCHHHHHCCHHHHHHHHHCCCCCCEEEEECCEECCCCCCCCCCCHHHCCCCCCCCCCCCCCCHHHHHHHH--CCCCHHHH T ss_conf 4627764679999999970999972898620765888714020002104557767887887103999998--69989999 Q ss_pred HHHHHHH Q ss_conf 8799750 Q gi|254780949|r 270 VSFAKRL 276 (418) Q Consensus 270 ~kyLklf 276 (418) T Consensus 193 ~n~~~~l 199 (223) T cd00418 193 RNFIALL 199 (223) T ss_pred HHHHHHH T ss_conf 9999995

HHsearch alignment for GI: 254780949 and conserved domain: cd00418