>TIGR00457 asnS asparaginyl-tRNA synthetase; InterPro: IPR004522 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 . AsparaginyltRNA synthetase (6.1.1.22 from EC) is an alpha2 dimer that belongs to class IIb. There is a striking similarity between asparaginyl-tRNA synthetases and archaeal/eukaryotic type aspartyl-tRNA synthetases (IPR004523 from INTERPRO) and a striking divergence of bacterial type aspartyl-tRNA synthetases (IPR004524 from INTERPRO). This family, AsnS, represents asparaginyl-tRNA synthetases from the three domains of life. Some species lack this enzyme and charge tRNA(asn) by misacylation with Asp, followed by transamidation of Asp to Asn.; GO: 0000166 nucleotide binding, 0004816 asparagine-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006421 asparaginyl-tRNA aminoacylation, 0005737 cytoplasm.

Probab=100.00 E-value=0 Score=685.82 Aligned_cols=424 Identities=24% Similarity=0.429 Sum_probs=362.2 Q ss_pred CCCCCEEEEEEEECCCC-CCC--CEEEEECCC--CEEEEEEECCCCCHHHHHHHHHCCCCEEEEEEEEEEC-CC--C--C Q ss_conf 43598899986881114-877--218997799--3599998054279678888742374316899657630-56--6--5 Q gi|254781118|r 57 EKSQDMITVAGRVYSSR-NSG--MFMDIHDAS--GKIQIFTHKDTADQDSQNLLSMIDIGDIIGITGQVRR-TK--R--G 126 (502) Q Consensus 57 ~~~~~~V~i~Grv~~~R-~~G--~Fi~LrD~~--g~iQv~~~~~~~~~~~~~~~~~l~~gd~i~v~G~v~~-~~--~--g 126 (502) T Consensus 13 ~~~~~~v~~~GW~~~kRDs~~~i~Fl~~~DGSsl~~iQ~V~~~~-~~~~~~~~~~~l~~g~~v~v~G~~~~~~P~~~aPq 91 (495) T TIGR00457 13 KAVGEEVTVSGWVRTKRDSSKKIIFLELNDGSSLGPIQAVINGE-LNEYLFQLLKSLTTGSSVSVTGKVVELSPGKGAPQ 91 (495) T ss_pred HHCCCEEEEEEEEEEHHCCCCCEEEEEEECCCEECCEEEEEECC-HHHHHHHHHHHHCCCEEEEEEEEEEECCCCCCCCC T ss_conf 53098289965341000002767899962583004437897050-22689999875202317999768886687887686 Q ss_pred CCCCCCC----EEEEECCCC--CCCCCCCCCCCHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCC Q ss_conf 5342122----012211355--5432221253114454201100123444443357889999999987385534543115 Q gi|254781118|r 127 ELTVNAQ----KIIMLSKAL--NSIPETYYGLSDVEIRYRKRYLDIISNSDSKIRFQQRSLLISQIRHFMEKKGFMEVET 200 (502) Q Consensus 127 elei~~~----~~~~l~~~~--~~lP~~~~~~~d~e~rl~~R~LDl~~~~~~~~~l~~Rs~i~~~iR~~l~~~gF~EveT 200 (502) T Consensus 92 ~~EL~~~nPvk~~ev~g~a~~p~~YPl~~K~Ghs~efLr~~~HLr~Rt~~~~-AvmrvR~~l~~ai~~yF~~~gF~~V~~ 170 (495) T TIGR00457 92 PVELKVKNPVKKIEVVGEAEDPDDYPLQKKEGHSLEFLRDIAHLRLRTNTLG-AVMRVRNALSQAIHEYFQKNGFVKVSP 170 (495) T ss_pred CEEEEEECCCEEEEEEEECCCCCCCCCCCCCCCCHHHHHCCCCHHHHHHHHH-HHHHHHHHHHHHHHHHHHCCCCEEECC T ss_conf 3136874673146887741788777764223687677632763777898877-899999999999998760478678688 Q ss_pred CCCCCCCCCCCCCEEEEE-----------------CCCCCCCCCCCHHHHHHHHHHHCCCCCHHHHHHHHHHCCCCCCC- Q ss_conf 653235666554203641-----------------22222543210012234444210243024543453202542344- Q gi|254781118|r 201 PILQPIYGGATADPFKTH-----------------HNILKADMYLRIAPELYLKRVLISGLTDQVFELNRNFRNEGVSS- 262 (502) Q Consensus 201 P~L~~~~~g~~~~~F~~~-----------------~~~~~~~~yL~qSpql~~k~l~~~G~~drvfeI~~~FR~E~~~~- 262 (502) T Consensus 171 PilT~~d~EGAGElF~v~TLdl~~lp~~~g~~df~~~fFgk~ayLTVSGQL~~E~~A~A--L~kvyTfGPTFRAEkS~T~ 248 (495) T TIGR00457 171 PILTSNDCEGAGELFKVSTLDLEKLPRNDGKIDFSKDFFGKEAYLTVSGQLYAEAYALA--LSKVYTFGPTFRAEKSNTS 248 (495) T ss_pred CEEECCCCCCCCCCCEEEEHHHHCCCCCCCCCCCCCCCCCCEEEEEECCHHHHHHHHHH--HCCCEECCCCEECCCCCCC T ss_conf 63113688887543322003242153326888763024886012330227899999997--4781445874004286487 Q ss_pred CCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHCCCCC--CC--C--CCE--EEC-CCCCCCEEEEECCCCCCCCCC Q ss_conf 32452100010011000111245678999988998708861--31--1--753--411-332210000000233448862 Q gi|254781118|r 263 RHNPEFTMIEAYWAYTDYRDMMKLVEDLCHNLAKTLHGTTD--IP--F--GEK--VIS-FKAPFACKSMLQLVKEATGLD 333 (502) Q Consensus 263 ~H~pEFt~lE~e~a~~d~~dim~l~E~li~~i~~~~~~~~~--~~--~--~~~--~~d-~~~~f~~~~~~e~i~~~~g~~ 333 (502) T Consensus 249 RHLsEFWMiEPE~AF~~l~d~~~~~E~~~k~~~k~VL~~~qellPkqfi~~~enn~~~~L~~~~~-~~~~~~l~~~i~~~ 327 (495) T TIGR00457 249 RHLSEFWMIEPEMAFANLNDLLQLIETLIKYIIKAVLENQQELLPKQFICSQENNLLKFLEKNFD-KDLIKKLENIINNK 327 (495) T ss_pred CCHHHHHHHHHHEEECCHHHHHHHHHHHHHHHHHHHHCCHHHHCCHHHCCCCHHHHHHHHHHHCC-HHHHHHHHHHHHCC T ss_conf 01112210112000001333389999999999999830524504201037771379998664127-56775225666226 Q ss_pred CCCCCCHHHHHHHHHH---HCCCCCCCCC-HHHHHHHHHHHCCCHHEE-C-CEEEECCCHHHHHHHCCCC-CCHHHEEEC Q ss_conf 1543321677765652---0235433223-189998876521301010-5-4356558002345303579-672110111 Q gi|254781118|r 334 FMLLKSDQEARVAAQS---IGITVENDAL-WGEVMMTIFEEKIEKNIV-N-PTHITDFPKDISPFAKEVA-GEKRLVERF 406 (502) Q Consensus 334 ~~~~~~~e~~~~~~~~---~g~~~~~~~~-~g~l~~~~~e~~ie~~~~-~-p~fI~dfP~~~~Pf~~~~~-~~~~~~~~f 406 (502) T Consensus 328 F~~i~Y~~Ai~iL~~~~~~~~~~Fe~~d~~wG~DL~~eHER~LaE~~Fk~qPvfV~~YPk~~KaFYMk~NS~D~~tV~a~ 407 (495) T TIGR00457 328 FARITYTDAIEILKESDNKEKKNFEYEDFEWGIDLQTEHERFLAEEYFKPQPVFVTDYPKDIKAFYMKLNSDDGKTVAAV 407 (495) T ss_pred CCEECHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCHHHHHHHHHCCCCCCCEEEECCCCCCCCHHCCCCCCCCCEEEEE T ss_conf 76004789999987421114643588861348886336899876315898888997388555801053667888747899 Q ss_pred CEEECC-E-EEEECHHEECCHHHHHHHHHHHHHHHHCCCCCCC-CCHHHHHHHHCCCCCCCCEECCHHHHHHHHCCCCCC Q ss_conf 355557-8-7200211005799999999999988730573354-508999997608698461324689998998262884 Q gi|254781118|r 407 ETYCNG-W-EICNAFSELNDPVEQRIRMEQQVEQSHQRGEHTI-LDEDFLDAMTYGMPPASGLGLGIDRLIMLLTNAPSI 483 (502) Q Consensus 407 dl~~~G-~-Ei~~G~~e~~dp~~q~~r~~~~~~~~~~~~~~~~-~~~~yl~a~~yG~PPhgG~glGldRL~m~l~g~~~I 483 (502) T Consensus 408 DlL~P~GiGEIiGGS~Re~d-------ld~L~~r~k~~g~d~~G~l~WY~DlRKyGs~PH~GFGLGfERl~ay~~G~~ni 480 (495) T TIGR00457 408 DLLAPKGIGEIIGGSEREDD-------LDKLEERMKEMGLDTDGALNWYLDLRKYGSVPHSGFGLGFERLVAYITGLENI 480 (495) T ss_pred EEECCCCEEEEECCCCCHHH-------HHHHHHHHHHCCCCCCCCCHHHHHHCCEECCCCCCCCHHHHHHHHHHHCCCCC T ss_conf 98378962665167543226-------89999999964868877504326415120566466432489999998178744 Q ss_pred EECCCCCCC Q ss_conf 041278675 Q gi|254781118|r 484 RDVILFPAQ 492 (502) Q Consensus 484 Rdvi~FP~~ 492 (502) T Consensus 481 RD~IPFPR~ 489 (495) T TIGR00457 481 RDAIPFPRT 489 (495) T ss_pred CCCCCCCCC T ss_conf 416677877

HHsearch alignment for GI: 254781118 and conserved domain: TIGR00457