>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=0 Score=517.17 Aligned_cols=351 Identities=25% Similarity=0.389 Sum_probs=241.5 Q ss_pred CEEEECCCCCCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHHCCC-----CHHHCCHHH Q ss_conf 489962822558897621577856687899876708982678888244420899999998765599-----833489999 Q gi|254780445|r 55 NFTLHDGPPYANGHIHIGHALNKILKDVIVRSFQMRNFNACFVPGWDCHGLPIEWKVENEYLAKGK-----KKDDIPVNE 129 (963) Q Consensus 55 ~f~l~dgPPy~nG~lH~GH~~n~~~kDi~~Ry~rm~G~~Vl~~~GwD~hGLPiE~~vek~l~~~~~-----~~~~~~~~~ 129 (963) T Consensus 1 k~~ITta~PY~NG~~HiGH~~~~i~aDi~~Ry~Rm~G~~V~~~~G~DeHG~pI~~~A~~~g~~~~~~~~~~~~~~~~~~~ 80 (376) T cd00812 1 KFYILVMFPYPSGRLHVGHVRTYTIGDIIARYKRMKGYNVLFPMGFDAFGLPAENAADKIGREDEDTIEPYRDVGVPDEE 80 (376) T ss_pred CEEEEECCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCHHHHHHHHHHCCCHHHHHHHHHHCCHHHHH T ss_conf 97998589888974546886989999999999995599704688456567899999999687477653011110001887 Q ss_pred HHH--HHHHHHHHHHHHHHHHHHHCCEEEECCCCEECCCHHHHHHHHHHHHHHHHCCCEECCCCEEEECCCCCCCCCCHH Q ss_conf 999--999999999999999999706077636981157767989999999999987961103430220574357365002 Q gi|254780445|r 130 FRQ--ACRDSASAWVKIQSKEFQRLGIVGDFENPYTTMTRESEAQIASELLKIAESDQIYRGIKPIMWSIAEQTTLAEAE 207 (963) Q Consensus 130 ~~~--~c~~~a~~~i~~~~~~~~rlG~~~Dw~~~y~T~dp~y~~~~~~~F~~l~~kGliyr~~~pV~w~p~~~T~La~~E 207 (963) T Consensus 81 ~~~~~~p~~~~~~~~~~~~~~~~~lg~~~D~~~~~~T~~~~~~~~vq~~f~~L~~~G~iy~~~~~~~y~~~~~~~----- 155 (376) T cd00812 81 IEKFADPKYWTEYFIAKMKEQLKRMGFSIDWRREFTTTDPEYYKFTQWQFLKLKEKGLIYKGEAPVNWCKLLDQW----- 155 (376) T ss_pred HHCCCCHHHHHHHHHHHHHHHHHHHCCCCCCCCCEECCCHHHHHHHHHHHHHHHHCCCEEECCCEECCCCCCCEE----- T ss_conf 861279999999999999999998098737686643377789999999999999889889517555364677605----- Q ss_pred HEEEEEECCEEEEEEEECCCCCCCCCCCCCHHCCHHHHHHHHHHHHCCCCCCEEEEEECCCCCCCCCCCCCEEEECCCHH Q ss_conf 10132105779998330375311220011000000578865445322776745899830665311112374355121118 Q gi|254780445|r 208 IEYHDVDSDSILVGFPVKSSADYLIKSQIVIWTTTPWTIPGNRAIAFSSNHQYGLYDVISCSGQHTFDTGKKLIISKNLA 287 (963) Q Consensus 208 vey~d~~~~s~~v~F~l~~~~~~~~~~~~~iwTTrP~Tl~~n~ai~v~p~~~Y~~~~~~~~~~~~~~~~~~~~i~a~~~~ 287 (963) T Consensus 156 -----------f~~~~--------------------------------~--~~--------------------------~ 164 (376) T cd00812 156 -----------FLKYS--------------------------------T--EW--------------------------A 164 (376) T ss_pred -----------EECCC--------------------------------H--HH--------------------------H T ss_conf -----------74166--------------------------------7--88--------------------------9 Q ss_pred HHHHHHCCCCEEEEEECCCCCCCCCEEEECCCCCCCCEEEECCCCCCCCCCCCCCEEEEECCCCHHHHHHHHHCCCHHHH Q ss_conf 88887609851784100111112857543137866512551144322332244540564057898898998760521221 Q gi|254780445|r 288 QSIANQTNVKIALVCDVKAEDLSKTMCSHPLKKLGYTFSVPLIDAEYVANDCGTGFVHVAPSHGVEDFTAWNEAKDILLN 367 (963) Q Consensus 288 ~~~~~~~~~~~~~~~~~~g~~l~g~~~~~Pl~~~~~~~~~pi~~~d~V~~~~GTG~Vh~aPahg~~Dy~~~~~~~~~~~~ 367 (963) T Consensus 165 ~~~---------------~~~~~~~~---------------~~-----------------p~~~~~~~~----------- 186 (376) T cd00812 165 ERL---------------LKDLEGLD---------------TW-----------------PEEVKNMQE----------- 186 (376) T ss_pred HHH---------------HHHHHCCC---------------CC-----------------CHHHHHHHH----------- T ss_conf 998---------------74042046---------------78-----------------688999999----------- Q ss_pred HCCCEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHCCCCCCHHHHCCCCCCCCCCCCCEEEEEEEE Q ss_conf 00220343023445510243100178632113554445675452356647982100000012211321013203333102 Q gi|254780445|r 368 RSVDIKVPSPVDGRGFYTTEAPGFSGARVLDDAGEKGNANEVVIAALINACAILNRSIVKHSYPHSWRSKKPIIFRTTSQ 447 (963) Q Consensus 368 ~~~~l~~~~~vd~~G~~~~~~~~~~G~~v~~~~~~~~~a~~~ii~~L~e~g~l~~~~~~~H~yP~cwR~~~pii~r~~~Q 447 (963) T Consensus 187 -----------------------------------------~~~~~~-------------------------------~~ 194 (376) T cd00812 187 -----------------------------------------NWIGWL-------------------------------KG 194 (376) T ss_pred -----------------------------------------HHHHHC-------------------------------CC T ss_conf -----------------------------------------987302-------------------------------46 Q ss_pred EEEEECCCCCCCHHHHHHHHHHHHCCCCCCCCCCCCHHHHHHCCCCCCCCCCC----CCCCCEEEEECCCCCEEECCCHH Q ss_conf 36630224554236899998752000002444343202443043200001123----45672258982588473252112 Q gi|254780445|r 448 WFLHMDKKLGDGSTLRSRALSEVEKIRFFPSSGKNRLRSMIENRPDWLLSRQR----NWGVPICFFYNEKGEILLDKAIN 523 (963) Q Consensus 448 WFi~~d~~~~~~~~~k~~~l~~i~~v~~~P~~~k~r~~~~i~~~~DW~ISRqR----~WG~PIPi~~~e~~~~~~~~~~~ 523 (963) T Consensus 195 ~~~~~~~-------------------------~~~~~---~~~l~dw~isr~~~~~~~wg~~ip~~~~~~~~~~~~---- 242 (376) T cd00812 195 WACARRY-------------------------GLGTV---LPWDRDWLIERLRDSTIYWGYYTPAHHCEKCGPVCP---- 242 (376) T ss_pred CEEEEEC-------------------------CCCCC---CCCCCCCCCCCCCCCCCCCCEEEEEEECCCCCEECC---- T ss_conf 5254111-------------------------11540---655544341344456666770021597567864146---- Q ss_pred HHHHHHHHHCCCCCCCCCCCHHCCCCCCCCCCCCCCCCCCCCCCCCCC-----CC-----CCCCCCCCCCCCCCCCCCCC Q ss_conf 444212221188743356401114688788755456642100003335-----45-----43322222333443100255 Q gi|254780445|r 524 DRIIKTFKDQGSDAWFSEGSRDFFLGDRASEPWIQSKDILDVWFDSAC-----TH-----TILLGKDPKLAWPADVYLEG 593 (963) Q Consensus 524 ~~i~~~~~~~g~d~~~~~~~~~~~~~~~~~~~~~r~~DvlDvWfDSg~-----s~-----~~~~~~~~~~~~PaD~~~eG 593 (963) T Consensus 243 ---------------------------~~~~~~~~~~~~~~~w~~~~w~~~~~~~~~~~~~~~~~~~~~~~~p~d~~~~G 295 (376) T cd00812 243 ---------------------------KCGKPAKRETDTMDEFFDSSWYYLRYLDPKNSEAPFDREEFEYWYPVDLYIGG 295 (376) T ss_pred ---------------------------CCCCCCCCCCCCCCCEEEEEECCCCCCCCCCCCCCCCHHHHHHHCCCCEEEEC T ss_conf ---------------------------66755566544688657763014666784334476687999842886068813 Q ss_pred CCCCCHHHHHHHHHHHH---CCCCCEEEEECCCCCEECCCCCCHHCCCCCCCCHHHHHCCCCHHHHHHHHHH-CCCCCCC Q ss_conf 44421112455444331---1784000013037826213453000012344333664113675788788871-7876655 Q gi|254780445|r 594 SDQHRGWFQHSLLESCA---TRGSTPFTSLITHGFSVDENGEKMSKSKGNVVFPEEIISESGADVLRYWAVN-SDYHDDQ 669 (963) Q Consensus 594 ~Dq~RgWF~s~ll~~~~---~~~~~Pfk~v~~hG~vld~~G~KMSKS~GNvi~p~~ii~~yGaD~lR~~~~~-~~~~~d~ 669 (963) T Consensus 296 kDii~fH~~~~~~~~~~l~~~~~~~~p~~v~~hG~l~~-~G~KMSKS~Gn~v~p~~~l~~yg~D~lR~~Ll~~~p~~~D~ 374 (376) T cd00812 296 KEHAVNHLLYSRFNHKALFDEGTKEPPKGLRVQGMVLL-EGEKMSKSKGNVVTPDEAIKKYGADATRLYLLFAAPPESDA 374 (376) T ss_pred CCCCCHHHHHHHHHHHHHHHCCCCCCCCEEEECCCEEC-CCEECCCCCCCCCCHHHHHHHCCCHHHHHHHHHCCCCCCCC T ss_conf 35420136799999999986467779826687572966-99663778998849899998859549999999449955689 Q ss_pred CC Q ss_conf 44 Q gi|254780445|r 670 RL 671 (963) Q Consensus 670 ~~ 671 (963) T Consensus 375 ~F 376 (376) T cd00812 375 NW 376 (376) T ss_pred CC T ss_conf 98

HHsearch alignment for GI: 254780445 and conserved domain: cd00812