>TIGR00395 leuS_arch leucyl-tRNA synthetase; InterPro: IPR004493 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 . Leucyl tRNA synthetase (6.1.1.4 from EC) is an alpha monomer that belongs to class Ia. There are two different families of leucyl-tRNA synthetases. This family includes both archaeal and cytosolic eukaryotic leucyl-tRNA synthetases.; GO: 0000166 nucleotide binding, 0004823 leucine-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006429 leucyl-tRNA aminoacylation, 0005737 cytoplasm.

Probab=99.41 E-value=5.2e-13 Score=113.35 Aligned_cols=269 Identities=20% Similarity=0.271 Sum_probs=169.0 Q ss_pred HHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHH-HHHHHHCCCC---CC-CCCCEEECCH------HCC-----C Q ss_conf 99999999999987762685410001235677778999-9987411432---01-2892875220------024-----5 Q gi|254780573|r 98 IITSKNTQQFVKDTTRLACLAPTHQPRATNHIPQMIYL-IQNIILHGHA---YE-ANNEIIFDTS------SIP-----N 161 (461) Q Consensus 98 ~~a~~~~~~f~~d~~~L~v~~p~~~pr~t~~i~~~i~~-i~~L~~~g~a---Y~-~~g~VyFdv~------~~~-----~ 161 (461) T Consensus 476 ~L~~Atk~~YK~ey~-~Gvm~~~~~~Y~G~kV~eak~~v~~dL~~~GlA~v~yEFsE~~VicRcG~~CiV~v~~DQWF~~ 554 (1109) T TIGR00395 476 LLEEATKELYKEEYH-TGVMIENILDYKGMKVSEAKEKVKEDLIDKGLADVMYEFSEKPVICRCGTKCIVKVVEDQWFVK 554 (1109) T ss_pred HHHHHHHHHCHHHCC-CEEECCCCCCCCCCCHHHHHHHHHHHHHHCCCCEEECCCCCCCEEECCCCCCEEEEECCEEEEE T ss_conf 478874002213215-0032047757886117999999999998537860201657885120267960698851600111 Q ss_pred CCC-----CCCCCHHHHHHHHHCCCCCCCCCCC----CEEEEECCCCCC-CEEECCC----------------------- Q ss_conf 432-----2467546666432102222101235----126663377666-3141467----------------------- Q gi|254780573|r 162 YGS-----FSRRKIDEQKMGTRVPEKYHKKNPA----DFILWKRSTPME-PGWESPW----------------------- 208 (461) Q Consensus 162 YG~-----Ls~~~~~~~~~g~r~~~~~~K~~p~----DFaLWK~~~~~e-~~w~spw----------------------- 208 (461) T Consensus 555 Ys~~~WK~~a~~CLegM~~ip~-~~k~~F~~~idWL~dwAc~Rr~GLGTrlPwde~wliESLsDSTIY~aYYtiA~~l~~ 633 (1109) T TIGR00395 555 YSDESWKELAHECLEGMRIIPE-EVKEAFEEKIDWLKDWACARRKGLGTRLPWDEKWLIESLSDSTIYMAYYTIAKYLNK 633 (1109) T ss_pred CCCHHHHHHHHHHHHCCCCCCH-HHHHHHHHHHHHHCCCEEEECCCCCCCCCCCCCEEEECCCCCHHHHHHHHHHHHHHH T ss_conf 4515689999987433732768-888888776664236304612467777875675477127623256789999999852 Q ss_pred ---CC--CCCC----------------------CCCHHHHHHHHHCC---------CCEEEEEECCCCCCCCCHHHHHHH Q ss_conf ---76--6764----------------------33204777787529---------841487413566668751366888 Q gi|254780573|r 209 ---GR--GRPG----------------------WHIECSAMSSHYLG---------KVFDIHGGGLDLIFPHHENEIAQS 252 (461) Q Consensus 209 ---G~--GRPG----------------------WHiECsam~~~~lg---------~~~DIH~GG~DL~FPHHENEiAQs 252 (461) T Consensus 634 ~~~g~EiGPlGisaD~mt~E~fDyifl~~gdV~K~Ak~t~ip~~~~~~lR~eF~Y~YPlD~r~SgKDLi~NHLtFyiF~H 713 (1109) T TIGR00395 634 DDLGNEIGPLGISADQMTDEFFDYIFLGKGDVDKVAKNTNIPLELIEKLREEFEYWYPLDWRISGKDLIPNHLTFYIFHH 713 (1109) T ss_pred CCCCCCCCCCCCCHHCCCHHHHHHHHCCCCCHHHHHHHHCCCHHHHHHHHHHCCEECCCCCCCCCCCCCHHHHHHHHHHE T ss_conf 14577645554442005744522432388715677654078888998755434100560100243101034677664400 Q ss_pred HHHCCCCCCHHHEECCCEEEEEECCCCCCCCCCCCHHHHHCCCCCCCCCCCHHHHHHHHH-CCCCCCCCCCCHHHHHHHH Q ss_conf 864087530121003432576420223323321408998502533455777999999984-2566432114503468777 Q gi|254780573|r 253 CCADRIEKTANIWIHNGFLNLEGRKMSKSNGNFITINELLETKKFGGRSWPAPVIRLAML-MTHYREPIDFTVQRLTEAE 331 (461) Q Consensus 253 ~a~~~~~~~a~yWlH~G~l~i~geKMSKSlGN~iti~dlL~~~~~~~k~y~p~viR~~lL-sshYRspLdfS~e~L~~A~ 331 (461) T Consensus 714 vAiFP~~~WPrGi~vnG~~~Leg~KmSkSkGn~l~l~~~v-------ekfGADv~Rl~~~~aAe~~~Dad~~~~e~~~~~ 786 (1109) T TIGR00395 714 VAIFPEKFWPRGIVVNGYVLLEGKKMSKSKGNVLTLKEAV-------EKFGADVARLYILDAAELVQDADWKESEVEGTK 786 (1109) T ss_pred EEECCCCCCCCEEEEEEEEEEECCCCCCCCCCCHHHHHHH-------HHHCCHHHHHHHHHCCCCCCCCCCCHHHHHHHH T ss_conf 2424879897617997578871734054547622388999-------872761899999731787213561067789999 Q ss_pred HHHHHCCCCCCCC-------------------CCCCHHHHHHC----------CCHHHHHHHH-HHHHHHHHHH Q ss_conf 6432100001351-------------------00596776302----------1101279999-9999999975 Q gi|254780573|r 332 ILLSKWPQTSTSK-------------------GIIDPAVLSAL----------YNDLNTVSAI-QALHKLARES 375 (461) Q Consensus 332 ~~l~kl~~~~~~~-------------------~~~~~~f~~AL----------~DDLNTp~AL-a~L~~lvk~~ 375 (461) T Consensus 787 ~~L~~l~~~a~e~~~~~~GrPvl~e~GPaE~~~f~D~wl~~~l~~~i~~~~e~~~~~~~r~A~~~~Lf~L~~d~ 860 (1109) T TIGR00395 787 KRLERLYEFAEEITKKSDGRPVLLEVGPAEELSFIDRWLLSRLNKAIKEVTEAMENFQTRKAVKAALFDLKADV 860 (1109) T ss_pred HHHHHHHHHHHHHHHHHCCCEEEECCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 99999999999985430684011035777631052189999999999999999986667899999999999999

HHsearch alignment for GI: 254780573 and conserved domain: TIGR00395