>cd00812 LeuRS_core This is the catalytic core domain of leucyl tRNA synthetase (LeuRS). This class I enzyme is a monomer, which aminoacylates the 2'-OH of the nucleotide at the 3' of the appropriate 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. In Aquifex aeolicus, the gene encoding LeuRS is split in two, just before the KMSKS motif. Consequently, LeuRS is a heterodimer, which likely superimposes with the LeuRS monomer found in most other organisms. LeuRS has an insertion in the core domain, which is subject to both deletions and rearrangements and thus differs between prokaryotic LeuRS and archaeal/eukaryotic LeuRS. This editing region hydrolyzes mischarged cognate tRNAs and thus prevents the incorporation of chemically similar amino acids.

Probab=100.00 E-value=5.8e-34 Score=263.10 Aligned_cols=272 Identities=17% Similarity=0.139 Sum_probs=179.9 Q ss_pred CCCCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCEEEEECCCCCCHHHHHHHHHCCCCCCC-----------------CCC Q ss_conf 788884441112799999999999997079984579960552338889999870898644-----------------884 Q gi|254780573|r 33 PTVYDFAHIGNARPMIVFDVLYRLLRYYYGEKCVTYVRNITDIDDKIIERARQEHPSIPI-----------------NDA 95 (461) Q Consensus 33 pTvy~~~HiG~~r~~v~~D~l~R~L~~~~~~~~V~~v~niTDidDkii~~a~~~~~~~~~-----------------~~~ 95 (461) T Consensus 9 PY~NG~~HiGH~~~~i~aDi~~Ry~Rm~G~~--V~~~~G~DeHG~pI~~~A~~~g~~~~~~~~~~~~~~~~~~~~~~~~~ 86 (376) T cd00812 9 PYPSGRLHVGHVRTYTIGDIIARYKRMKGYN--VLFPMGFDAFGLPAENAADKIGREDEDTIEPYRDVGVPDEEIEKFAD 86 (376) T ss_pred CCCCCCHHHHHHHHHHHHHHHHHHHHHCCCC--CCCCCCCCCCCHHHHHHHHHHCCCHHHHHHHHHHCCHHHHHHHCCCC T ss_conf 8889745468869899999999999955997--04688456567899999999687477653011110001887861279 Q ss_pred HHHHHHHHHHHHHHHHHHHCCCCC---CHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCEEECCHHC---CCC----CCC Q ss_conf 899999999999998776268541---0001235677778999998741143201289287522002---454----322 Q gi|254780573|r 96 ISIITSKNTQQFVKDTTRLACLAP---THQPRATNHIPQMIYLIQNIILHGHAYEANNEIIFDTSSI---PNY----GSF 165 (461) Q Consensus 96 ~~~~a~~~~~~f~~d~~~L~v~~p---~~~pr~t~~i~~~i~~i~~L~~~g~aY~~~g~VyFdv~~~---~~Y----G~L 165 (461) T Consensus 87 p~~~~~~~~~~~~~~~~~lg~~~D~~~~~~T~~~~~~~~vq~~f~~L~~~G~iy~~~~~~~y~~~~~~~f~~~~~~~~~~ 166 (376) T cd00812 87 PKYWTEYFIAKMKEQLKRMGFSIDWRREFTTTDPEYYKFTQWQFLKLKEKGLIYKGEAPVNWCKLLDQWFLKYSTEWAER 166 (376) T ss_pred HHHHHHHHHHHHHHHHHHHCCCCCCCCCEECCCHHHHHHHHHHHHHHHHCCCEEECCCEECCCCCCCEEEECCCHHHHHH T ss_conf 99999999999999999809873768664337778999999999999988988951755536467760574166788999 Q ss_pred CCCCHHHHHHH---HHCCC----CCCCCCCCCEEEEECCC-CCCCEE--------ECCCCCCCCCCCCHH---------- Q ss_conf 46754666643---21022----22101235126663377-666314--------146776676433204---------- Q gi|254780573|r 166 SRRKIDEQKMG---TRVPE----KYHKKNPADFILWKRST-PMEPGW--------ESPWGRGRPGWHIEC---------- 219 (461) Q Consensus 166 s~~~~~~~~~g---~r~~~----~~~K~~p~DFaLWK~~~-~~e~~w--------~spwG~GRPGWHiEC---------- 219 (461) T Consensus 167 ~~~~~~~~~~~p~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~dw~isr~~~~~~~wg~~ip~~~~~~~~~~~~~~~~ 246 (376) T cd00812 167 LLKDLEGLDTWPEEVKNMQENWIGWLKGWACARRYGLGTVLPWDRDWLIERLRDSTIYWGYYTPAHHCEKCGPVCPKCGK 246 (376) T ss_pred HHHHHHCCCCCCHHHHHHHHHHHHHCCCCEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCEEEEEEECCCCCEECCCCCC T ss_conf 87404204678688999999987302465254111115406555443413444566667700215975678641466675 Q ss_pred ----------------------------HHHH-HHHCC--CCEEEEEECCCCCCCCCHHHHHHHHHH---CCCCCCHHHE Q ss_conf ----------------------------7777-87529--841487413566668751366888864---0875301210 Q gi|254780573|r 220 ----------------------------SAMS-SHYLG--KVFDIHGGGLDLIFPHHENEIAQSCCA---DRIEKTANIW 265 (461) Q Consensus 220 ----------------------------sam~-~~~lg--~~~DIH~GG~DL~FPHHENEiAQs~a~---~~~~~~a~yW 265 (461) T Consensus 247 ~~~~~~~~~~~w~~~~w~~~~~~~~~~~~~~~~~~~~~~~~p~d~~~~GkDii~fH~~~~~~~~~~l~~~~~~~~p~~-v 325 (376) T cd00812 247 PAKRETDTMDEFFDSSWYYLRYLDPKNSEAPFDREEFEYWYPVDLYIGGKEHAVNHLLYSRFNHKALFDEGTKEPPKG-L 325 (376) T ss_pred CCCCCCCCCCCEEEEEECCCCCCCCCCCCCCCCHHHHHHHCCCCEEEECCCCCCHHHHHHHHHHHHHHHCCCCCCCCE-E T ss_conf 556654468865776301466678433447668799984288606881335420136799999999986467779826-6 Q ss_pred ECCCEEEEEECCCCCCCCCCCCHHHHHCCCCCCCCCCCHHHHHHHHHCC Q ss_conf 0343257642022332332140899850253345577799999998425 Q gi|254780573|r 266 IHNGFLNLEGRKMSKSNGNFITINELLETKKFGGRSWPAPVIRLAMLMT 314 (461) Q Consensus 266 lH~G~l~i~geKMSKSlGN~iti~dlL~~~~~~~k~y~p~viR~~lLss 314 (461) T Consensus 326 ~~hG~l~~~G~KMSKS~Gn~v~p~~~l~-------~yg~D~lR~~Ll~~ 367 (376) T cd00812 326 RVQGMVLLEGEKMSKSKGNVVTPDEAIK-------KYGADATRLYLLFA 367 (376) T ss_pred EECCCEECCCEECCCCCCCCCCHHHHHH-------HCCCHHHHHHHHHC T ss_conf 8757296699663778998849899998-------85954999999944

HHsearch alignment for GI: 254780573 and conserved domain: cd00812