>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=532.32 Aligned_cols=304 Identities=20% Similarity=0.242 Sum_probs=243.5 Q ss_pred HCCCHHH-----HHHHHHHHHHHHHHHHHHCCCEEEECCCEECCC-CCCCCCCCEEEEC--------------CCCCCCC Q ss_conf 2615489-----999999999999999998798898478210568-9854454124102--------------4788678 Q gi|254781066|r 14 FHYRRRP-----FLLKRNMIQSSLREYFVENQFIEIDSMSLQYSP-GNETHIRAFSTEL--------------IIQDHIR 73 (355) Q Consensus 14 ~~~r~R~-----~l~~Rs~i~~~iR~ff~~~gF~EV~TPiL~~~~-~g~~~~~~f~t~~--------------~~~~~~~ 73 (355) T Consensus 133 ~HLr~Rt~~~~AvmrvR~~l~~ai~~yF~~~gF~~V~~PilT~~d~EGAG--ElF~v~TLdl~~lp~~~g~~df~~~fFg 210 (495) T TIGR00457 133 AHLRLRTNTLGAVMRVRNALSQAIHEYFQKNGFVKVSPPILTSNDCEGAG--ELFKVSTLDLEKLPRNDGKIDFSKDFFG 210 (495) T ss_pred CCHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCEEECCCEEECCCCCCCC--CCCEEEEHHHHCCCCCCCCCCCCCCCCC T ss_conf 63777898877899999999999998760478678688631136888875--4332200324215332688876302488 Q ss_pred CCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHCCCCCC-CCCCCCEEEECEEECCCCHHHHHHHHHHHHHHHHHHHCCCE- Q ss_conf 3200002858999989874468899988642456777-54484300200011577657877755788877666418830- Q gi|254781066|r 74 KPLYLQTSPEFSCKKLLAAGEEKIFCFAHAWRNGEQG-CLHQPEFTMLEWYRAHESYEQLMKDCMNIIRCAAEVANQKI- 151 (355) Q Consensus 74 ~~~yL~~SPql~lK~ll~~G~~rvyqig~~FRaE~~~-~rHlpEFtmLE~e~af~d~~dlm~~~E~li~~~~~~~~~~~- 151 (355) T Consensus 211 k~ayLTVSGQL~~-E~~A~AL~kvyTfGPTFRAEkS~T~RHLsEFWMiEPE~AF~~l~d~~~~~E~~~k~~~k~VL~~~q 289 (495) T TIGR00457 211 KEAYLTVSGQLYA-EAYALALSKVYTFGPTFRAEKSNTSRHLSEFWMIEPEMAFANLNDLLQLIETLIKYIIKAVLENQQ 289 (495) T ss_pred CEEEEEECCHHHH-HHHHHHHCCCEECCCCEECCCCCCCCCHHHHHHHHHHEEECCHHHHHHHHHHHHHHHHHHHHCCHH T ss_conf 6012330227899-999997478144587400428648701112210112000001333389999999999999830524 Q ss_pred --ECCC---CCC---CC-----------------CCCCCCCCCHHHHHHHHCCCCCCCCCCCCCCCCHHHHHHHHHHCCC Q ss_conf --0022---343---32-----------------4677320788886566608765323455562327999999997688 Q gi|254781066|r 152 --FSFQ---NVN---CN-----------------PFSEPEYITVAEAFARYANIDLGTTLDNPDQPDRHLLYLQAQQAGI 206 (355) Q Consensus 152 --~~~~---~~~---~~-----------------~~~~~~~i~~~e~~~~~~~~d~~~~~~~~~~~~~~~~~~~~~~~~~ 206 (355) T Consensus 290 ellPkqfi~~~enn~~~~L~~~~~~~~~~~l~~~i~~~F~~i~Y~~Ai~--------------------iL~~~~~~~~~ 349 (495) T TIGR00457 290 ELLPKQFICSQENNLLKFLEKNFDKDLIKKLENIINNKFARITYTDAIE--------------------ILKESDNKEKK 349 (495) T ss_pred HHCCHHHCCCCHHHHHHHHHHHCCHHHHHHHHHHHHCCCCEECHHHHHH--------------------HHHHHHHCCCC T ss_conf 5042010377713799986641275677522566622676004789999--------------------98742111464 Q ss_pred CCCCCCC-HHHHHHHHHHCEECCCCCCCCCCCCCCCCHHHHHHCCCCC-CCCCCCCCCEEEECC-E-ECCCCCHHCCCHH Q ss_conf 7787653-4789876643003622376754432576888864136787-783633022022367-1-2256402106999 Q gi|254781066|r 207 RVAHDDT-WSDIFSRILIEKIEPNLGINCCTILDRYPAPESALANIYP-ADPRFTKRFELYACN-I-ELCNACDELLDPI 282 (355) Q Consensus 207 ~~~~~~~-~~~~~~~l~~~~ie~~l~~~~pvfi~~yP~~~~plak~~~-~~~~va~rfdl~i~G-~-El~ng~~El~d~~ 282 (355) T Consensus 350 ~Fe~~d~~wG~DL~~eHER~LaE~~Fk~qPvfV~~YPk~~KaFYMk~NS~D~~tV~a~DlL~P~GiGEIiGGS~Re~dld 429 (495) T TIGR00457 350 NFEYEDFEWGIDLQTEHERFLAEEYFKPQPVFVTDYPKDIKAFYMKLNSDDGKTVAAVDLLAPKGIGEIIGGSEREDDLD 429 (495) T ss_pred CCCCCCCCCCCCCCHHHHHHHHHCCCCCCCEEEECCCCCCCCHHCCCCCCCCCEEEEEEEECCCCEEEEECCCCCHHHHH T ss_conf 35888613488863368998763158988889973885558010536678887478999837896266516754322689 Q ss_pred HHHHHHHHHHHHHHCCCCCC-CHHHHHHHHHH-CCCCCCCEEECCHHHHHHHHHCCCCHHHHCCCCCC Q ss_conf 99999999999997288853-01018999986-18896324531599998998155971311158564 Q gi|254781066|r 283 EQRHRFEKEMQEKKKIYNET-YPIDEDFLACL-TEMPQSSGIAMGFDRLVMLVTGANNINEVIWTPFS 348 (355) Q Consensus 283 ~q~~rf~~q~~~k~~~~~e~-~~~D~~fl~al-~G~PPhgG~glGidRLvm~l~g~~~Irdvi~FP~~ 348 (355) T Consensus 430 ~L~~r~k~------~g~d~~G~l--~WY~DlRKyGs~PH~GFGLGfERl~ay~~G~~niRD~IPFPR~ 489 (495) T TIGR00457 430 KLEERMKE------MGLDTDGAL--NWYLDLRKYGSVPHSGFGLGFERLVAYITGLENIRDAIPFPRT 489 (495) T ss_pred HHHHHHHH------CCCCCCCCC--HHHHHHCCEECCCCCCCCHHHHHHHHHHHCCCCCCCCCCCCCC T ss_conf 99999996------486887750--4326415120566466432489999998178744416677877

HHsearch alignment for GI: 254781066 and conserved domain: TIGR00457