>TIGR00464 gltX_bact glutamyl-tRNA synthetase; InterPro: IPR004527 The aminoacyl-tRNA synthetases (6.1.1. from EC) catalyse the attachment of an amino acid to its cognate transfer RNA molecule in a highly specific two-step reaction. These proteins differ widely in size and oligomeric state, and have limited sequence homology . The 20 aminoacyl-tRNA synthetases are divided into two classes, I and II. Class I aminoacyl-tRNA synthetases contain a characteristic Rossman fold catalytic domain and are mostly monomeric . Class II aminoacyl-tRNA synthetases share an anti-parallel beta-sheet fold flanked by alpha-helices , and are mostly dimeric or multimeric, containing at least three conserved regions , , . However, tRNA binding involves an alpha-helical structure that is conserved between class I and class II synthetases. In reactions catalysed by the class I aminoacyl-tRNA synthetases, the aminoacyl group is coupled to the 2'-hydroxyl of the tRNA, while, in class II reactions, the 3'-hydroxyl site is preferred. The synthetases specific for arginine, cysteine, glutamic acid, glutamine, isoleucine, leucine, methionine, tyrosine, tryptophan and valine belong to class I synthetases; these synthetases are further divided into three subclasses, a, b and c, according to sequence homology. The synthetases specific for alanine, asparagine, aspartic acid, glycine, histidine, lysine, phenylalanine, proline, serine, and threonine belong to class-II synthetases . Glutamyl-tRNA synthetase (6.1.1.17 from EC) is a class Ic synthetase and shows several similarities with glutaminyl-tRNA synthetase concerning structure and catalytic properties. It is an alpha2 dimer. To date one crystal structure of a glutamyl-tRNA synthetase (Thermus thermophilus) has been solved. The molecule has the form of a bent cylinder and consists of four domains. The N-terminal half (domains 1 and 2) contains the 'Rossman fold' typical for class I synthetases and resembles the corresponding part of E. coli GlnRS, whereas the C-terminal half exhibits a GluRS-specific structure . ; GO: 0000166 nucleotide binding, 0004818 glutamate-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006424 glutamyl-tRNA aminoacylation, 0005737 cytoplasm.

Probab=100.00 E-value=0 Score=1332.87 Aligned_cols=473 Identities=42% Similarity=0.738 Sum_probs=458.5 Q ss_pred CEEEECCCCCCCCCCHHHHHHHHHHHHHHHHCCCEEEEEECCCCCCCCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCE Q ss_conf 70563484338878501599999999999971884999970486663886799999999886589888676558876763 Q gi|255764513|r 6 KVRVRIAPSPTGEPHIGTAYTALFNYLIAKRTGGKFILRIEDTDSKRSTLESENAVMQSLKWCGLNWDEGPDIGGAYGPY 85 (492) Q Consensus 6 ~v~~RfaPsPtG~lH~G~~rtal~n~l~a~~~~g~f~lRieDtd~~R~~~~~~~~i~~~l~wlgl~~De~~~~~g~~~p~ 85 (492) T Consensus 1 ~vrtRfAPSPTG~LHiGg~RTAlFNyLfAr~~~G~F~lRiEDTD~eR~~~e~~~~i~e~LkWlGi~wDEs~~~gG~Y~Py 80 (513) T TIGR00464 1 KVRTRFAPSPTGYLHIGGARTALFNYLFARHTGGKFILRIEDTDLERNIEEAEESILEGLKWLGISWDESVYVGGNYGPY 80 (513) T ss_pred CCEEEECCCCCCCCCHHHHHHHHHHHHHHHHCCCCEEEEEEECCCCCCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCEEE T ss_conf 92377338887543533689999999999863893799875367100724468999988874586746675689863011 Q ss_pred ECCCCHHHHHHHHHHHHHCCCEEECCCCHHHHHHHH-HH-HHHHHCCCCCCCCCCCCCHHHHHHHHHCCCCCEEEEEECC Q ss_conf 232628999999999998898245148899977668-87-6643100023665557883330011202577407886224 Q gi|255764513|r 86 RQSERKNIYQPYVQNLLEKKLAFRCFCSTERLEEMR-RA-QRKRNIPSRYDGHCLKLSSQEIERLSQEQKKHVVRLTVPN 163 (492) Q Consensus 86 ~QS~r~~~y~~~~~~L~~~g~aY~c~~t~eel~~~r-~~-~~~~~~~~~Y~~~~r~l~~~e~~~~~~~g~~~~iR~k~p~ 163 (492) T Consensus 81 ~QS~R~~~Y~~~~~~Ll~~g~AYrCYCs~E~LE~~Rke~~q~~~~~~PrYd~~cr~l~~~~~~~~l~~~~~pvvRfK~P~ 160 (513) T TIGR00464 81 YQSQRLDIYKKYIKELLEEGLAYRCYCSKEELERLRKEEIQKANKETPRYDGRCRNLHEEEIENKLAKGIPPVVRFKIPQ 160 (513) T ss_pred HHHHHHHHHHHHHHHHHHCCCCEEEECCHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCHHHHHHHHCCCCCEEEEECCC T ss_conf 10136789999999997459934422784678899899999708853483753347871378876443799668874079 Q ss_pred CCEEECCCCCCCCEECCCCCCC------CCCEECCC-------CCHHHHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHH Q ss_conf 3114304751340213643235------64100045-------3248986788764444444311223543024788999 Q gi|255764513|r 164 QGSCVFQDKVYGEMEIPWNAVD------MQVLLKSD-------GMPTYHLANVIDDHLMKITHVARGEEWISSVPKHILL 230 (492) Q Consensus 164 ~~~~~~~D~i~G~~~~~~~~~~------D~vi~r~d-------g~ptY~~a~vvDD~~m~ithviRg~d~~~~t~~q~~l 230 (492) T Consensus 161 ~~~~~F~D~v~G~i~~~~~~l~~dkrydD~vi~k~DenPeeafG~PTYNfAvvvDD~lM~IThViRGedHisNTPkQI~i 240 (513) T TIGR00464 161 EAEISFNDQVRGEITFEGSELDNDKRYDDLVILKSDENPEEAFGSPTYNFAVVVDDYLMKITHVIRGEDHISNTPKQILI 240 (513) T ss_pred CCCEEECCEEEEEEEECCCCCCCCCCCCCEEEEECCCCHHHHCCCCCCCEEEEEECCCCCCCEEEECCHHHCCCHHHHHH T ss_conf 98424505022158855866786644156126406888322148864250678853325545144120200671899999 Q ss_pred HHHHHHC-CCHHHHHHHHHHHHCCCCCCCCC--CCCHHHHHHCCCCHHHHHHHHHHCCCCCCC----CCHHHCCHHHHHH Q ss_conf 9985100-00010145553110132212234--330245666297737799899850676665----5301101467776 Q gi|255764513|r 231 YQYFNFP-IPEFIHLPLIKNPDKSKLSKRRN--PTSISYYSAMGYLPEALINFLALLFVHKSE----DDDELMDMQQLIH 303 (492) Q Consensus 231 ~~al~~~-~p~f~H~pli~~~~g~klSKR~~--~~~i~~~~~~GylPeAilNyLalLGws~~~----~d~Eifsl~eli~ 303 (492) T Consensus 241 y~Alg~~~iP~f~H~p~I~~~~gKKLSKRdg~~~~si~q~~~~GyLPEAl~Nyl~lLGW~~~~dlas~~~E~Fs~~elie 320 (513) T TIGR00464 241 YKALGWKRIPTFAHLPLILNEDGKKLSKRDGKTATSIEQFKEQGYLPEALINYLALLGWSPPDDLASKDQEIFSLEELIE 320 (513) T ss_pred HHHCCCCCCCCEEEEEEEECCCCCEEECCCCHHHHHHHHHHHCCCCHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHH T ss_conf 99708898881553535856988400120640257689998668877899999998468965233446566367799982 Q ss_pred HHHHHHCCCCCCCCHHHHHHHHHHHHHHCC--CCHHHHHHHHHHHHCC-------------CCCCCCHHHHHHHCCCHHH Q ss_conf 520211375544201565566435555126--9989999864442000-------------0123220688872532035 Q gi|255764513|r 304 HFDLHHLSKAGAVFDKQKLDWLNGRWIREK--LSTTEFLSRVSQWMKE-------------KDRLTQALTLAQSRITTLS 368 (492) Q Consensus 304 ~FdL~~I~Ks~A~FD~eKL~wlN~qyIr~~--l~~~el~~~l~~~l~~-------------~~~l~~il~likeRi~tL~ 368 (492) T Consensus 321 ~F~l~~~~kspA~Fd~~KL~w~N~~Ylk-~riL~~~~l~~ll~~~~~~~~~~~~~~~~~~~q~wL~~l~~l~~~~~~~l~ 399 (513) T TIGR00464 321 IFSLNRLSKSPAKFDIKKLKWLNAHYLK-ERILPDEELLELLDPHLKKKESVVKTSTLNEEQEWLKELLLLLKERLKTLK 399 (513) T ss_pred CCCCCCCCCCCCCCCHHHHHHHHHHHHH-HHCCCHHHHHHHHHHHHHCCCCEECCCCCCCHHHHHHHHHHHHHHHHHHHH T ss_conf 0681102221012444899999999998-644899899988767754068310255664057899999998656677899 Q ss_pred HHHHHHHHHHCCCCCCCHHHHHHHHCCCHHHHHHHHHHHHHHCCCCCCC-HHHHHHHHHHHHHHHCCCHHHHCCEEEEEE Q ss_conf 6677556752246788854554331486679999999999840588899-888999999999995798233101267889 Q gi|255764513|r 369 ALPQMTDFLFKSDLHLTAESFKSTALCPEEIIDILKTTQEEFEVIQIWK-RENIETALRNVAQHREKSLKIIVKPLFLAI 447 (492) Q Consensus 369 Di~~~~~ffF~~~~~~d~e~~~k~~~~~e~~~~iL~~~~~~L~~~~~w~-~e~Ie~~ik~i~e~~giK~k~l~~PLRiAL 447 (492) T Consensus 400 e~~~~~~~ff~~~~~~~~~~~~~~-~~~~~~~~~L~~~~~~L~~~~~~~d~~~~~~~~~~~~~~~~~K~k~~~~PlR~a~ 478 (513) T TIGR00464 400 ELAELIRLFFEDKKEVDEDAKKKL-EKFKNVKEVLEALKKKLQALEEWTDAEEVKSAIKQVAEELGLKGKKVFMPLRVAL 478 (513) T ss_pred HHHHHHHHHHCCHHHHHHHHHHHH-HHHHHHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHHHHCCCCCCHHHHHHHHH T ss_conf 999999986034367656899889-9889899999999999724865667789999999999984789870447899998 Q ss_pred ECCCCCCCHHHHHHHHC-HHHHHHHHHHHHHHHH Q ss_conf 64888888999998849-5999999999999999 Q gi|255764513|r 448 TGSKYSLPLFDSIEILG-RSVVYFRLRHAIALVS 480 (492) Q Consensus 448 TG~~~GP~L~eil~lLG-keetl~RL~~aL~~l~ 480 (492) T Consensus 479 ~G~~~Gp~L~~~~~~ig~k~~~~~Rl~~a~~fi~ 512 (513) T TIGR00464 479 TGKGHGPDLAQSLELIGSKTESIKRLKEALQFIA 512 (513) T ss_pred HCCCCCCCHHHHHHHHCCHHHHHHHHHHHHHHHH T ss_conf 5789896889999971581899999999999982

HHsearch alignment for GI: 255764513 and conserved domain: TIGR00464