>TIGR00472 pheT_bact phenylalanyl-tRNA synthetase, beta subunit; InterPro: IPR004532 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 . Phenylalanyl-tRNA synthetase (6.1.1.20 from EC) is an alpha2/beta2 tetramer composed of 2 subunits that belongs to class IIc. In eubacteria, a small subunit (pheS gene) can be designated as beta (E. coli) or alpha subunit (see IPR002319 from INTERPRO). Reciprocally the large subunit (pheT gene) can be designated as alpha (E. coli) or beta. In all other kingdoms the two subunits have equivalent length in eukaryota, and can be identified by specific signatures. The enzyme from Thermus thermophilus has an alpha 2 beta 2 type quaternary structure and is one of the most complicated members of the synthetase family. Identification of phenylalanyl-tRNA synthetase as a member of class II aaRSs was based only on sequence alignment of the small alpha-subunit with other synthetases . This family describes the beta subunit. The beta subunits break into two subfamilies that are considerably different in sequence, length, and pattern of gaps (see also IPR004531 from INTERPRO). This family represents the subfamily that includes the beta subunit from bacteria other than spirochetes, as well as a chloroplast-encoded form from Porphyra purpurea. The chloroplast-derived sequence is considerably shorter at the N-terminal.; GO: 0000166 nucleotide binding, 0004826 phenylalanine-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006432 phenylalanyl-tRNA aminoacylation, 0005737 cytoplasm.

Probab=100.00 E-value=0 Score=1800.46 Aligned_cols=797 Identities=37% Similarity=0.602 Sum_probs=729.5 Q ss_pred CCCCHHHHHHHCCC-CC-CHHHHHHHHHHCC-CEEEEEECCC-CCCC--EEEEEEEEEEECCCCC-CCEEEEECCCC-CE Q ss_conf 97786799884789-99-8899999987458-6042111246-5687--4899999975657998-70899975999-57 Q gi|254780316|r 1 MKFTLSWLKDHLDT-DV-SLEKICDTLTSIG-LEVEKVDNRE-ALSP--FTIVKVLSVERNPDLD-CAILRIDTGKH-QE 72 (805) Q Consensus 1 M~is~~WL~~~v~~-~~-~~~~l~~~lt~~G-~EVe~i~~~~-~~~~--vvvg~v~~~~~hP~ad-l~v~~Vd~g~~-~~ 72 (805) T Consensus 1 M~~S~~WL~~~~~~~~~~s~~ei~~~L~~~G~~EVE~v~~~~~~~~~~~vvvG~v~~~~~HP~adkL~vc~V~~G~~e~~ 80 (848) T TIGR00472 1 MKISLKWLREYVPLSEIDSLEEIAEKLTSIGVLEVEEVEPFKKSLKGRYVVVGKVLEVEPHPNADKLKVCKVDIGEKEEP 80 (848) T ss_pred CCCCHHHHHHHCCCCCCCCHHHHHHHHHHCCEEEEEEEEECCCCCCCCEEEEEEEEEEECCCCCCCCEEEEEEECCCEEE T ss_conf 95656889974275567898999999862770566200103655478558999999861388888856899887796067 Q ss_pred EEEECCCCCCCCCCEEEEECCCCEECCCC---EEEEEEHHCCCCCCCHHHHHHHCCCCCC-----CCCEEEEC--CCCCC Q ss_conf 98975483455897898966877925898---3983312058650545411887699854-----77507816--88888 Q gi|254780316|r 73 IQVVCGAPNVRVGLLGVWAPPGSCIPENN---MIVNVRKIRGIESTGMMCSEKELMLSDD-----SASIMELP--IDAPV 142 (805) Q Consensus 73 ~~IvcgA~Nv~~g~~V~~A~~Ga~lp~g~---~~i~~~~irGv~S~GMlCS~~ELgl~~~-----~~gI~~l~--~~~~~ 142 (805) T Consensus 81 ~qIVcGA~Nv~~g~~V~VA~~GA~L~-~~~~~~~Ik~~klRG~~S~GMlCS~~ELGl~~~~~~e~~dgi~~L~~~~~~~~ 159 (848) T TIGR00472 81 LQIVCGAPNVEAGDKVAVALPGAKLP-NGEEELKIKKSKLRGVESEGMLCSESELGLEEESLTEDSDGIIVLDEAEDAPL 159 (848) T ss_pred EEEEECCCCCCCCCEEEEECCCCEEE-CCCCEEEEEHHHCCCCCCCCCEECHHHCCCCCCCCCCCCCCEEEECCCCCCCC T ss_conf 88862765401478859960485740-89721578543437535665042464628631023222564688177688865 Q ss_pred CCCHHHHHCCCCE-EEEEEECCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCC--CCCCCCEEEEEEECCCHHHHHHH Q ss_conf 8455887088855-99987087857665557899987764115666655456677--77777415898407311123320 Q gi|254780316|r 143 GGRLSDYLELSDP-IIDVSLTPNRSDCIGVRGIALDLVAAGLGKLKEINISCPLS--SESIPLEIKFDLDDSSLCKGFAM 219 (805) Q Consensus 143 G~~~~~~l~l~D~-i~ei~iTpNR~D~ls~~GiARElaa~~~~~l~~~~~~~~~~--~~~~~~~i~v~i~~~~~c~~y~~ 219 (805) T Consensus 160 G~~~~~~L~ldd~~~~e~~iTpNR~DclS~~G~ARElAa~~~~-l~~p~~~~~~~~~~~~~~~~~~~~~~~~~~~~~y~~ 238 (848) T TIGR00472 160 GTDIAEYLGLDDDTVIEISITPNRGDCLSILGIARELAALFDL-LKTPVPFEPETTETETIDEGFKVEIEDEEACPRYLG 238 (848) T ss_pred CCCHHHHHCCCCEEEEEEECCCCHHHHHHHHHHHHHHHHHHCC-CCCCCCCCCCCCHHEECCCCCCEEECCCCCCCCEEE T ss_conf 6777887146880799964389835776488999999987242-565543354410000025544212135010781468 Q ss_pred CCCCCCCCCC-CCHHHHHHHHHHCCCCCHHHHHHHHHHHHHHCCCEEEECCCCCCC-E-EEEEECCCCCCHHHHHHHCCC Q ss_conf 1123224556-637787888864013210399999899986087000001022333-2-688623554311455420112 Q gi|254780316|r 220 CCVKGVRNNV-APNWMRQRLKAVGLRSISALVDITNYVSLDRGYPSHVFDASRISD-V-LTVRRACSGEKILALDNQEYD 296 (805) Q Consensus 220 ~~i~~v~~~~-SP~wl~~rL~~~Gir~inniVDitNyvmle~GqPlHafD~dki~~-~-i~vr~a~~~E~~~~Ld~~e~~ 296 (805) T Consensus 239 ~~i~~v~~~~~sP~w~~~rL~~~G~r~~N~~VDitNYv~~~~GQPlHafD~~~~~g~~si~Vr~ak~~e~~~~Ld~~e~~ 318 (848) T TIGR00472 239 RVIKGVKVKPQSPLWLKERLRASGIRPINNIVDITNYVMLELGQPLHAFDADKIEGSNSIVVRSAKEGESFTTLDGKERE 318 (848) T ss_pred EEEEEEECCCCCCHHHHHHHHHCCCCCCCHHHHHHHHHHHHHCCCHHHCCHHHHCCCCEEEEEEECCCCEEEECCCEEEE T ss_conf 99743531568988999999964898332335267899998568222212456338845999983367143304653466 Q ss_pred CCCCCEEEECCC-CCCCCHHHCCCCCCCCCCCC-CEEEEEEECCCHHHHHHHHHHHCCCCHHHHHHCC-CCCCHHHHHHH Q ss_conf 454320000256-76310011135531201367-2699997157878887788761654015544134-55301358899 Q gi|254780316|r 297 LSPDNVVIASDG-RIQSIAGIIGGKHAGCDDNT-TDVLVEVALWDPINIARSGKNLGIITDSRYRFER-GVDLQGMIPVL 373 (805) Q Consensus 297 L~~~~lvI~d~~-~~ialaGImGg~~s~v~~~T-~~illEsA~F~p~~Ir~tar~l~l~TdaS~RfER-gvd~~~~~~al 373 (805) T Consensus 319 L~~~~lvi~d~~~~~~aiaGv~Gg~~s~v~~~tT~~i~lE~A~F~p~~Irk~~~~l~i~t~~s~Rfer~g~D~~~~~~a~ 398 (848) T TIGR00472 319 LKKGDLVIADDEDKPLAIAGVMGGKESGVTDETTTNIFLESAYFNPESIRKTARRLGISTDSSYRFERTGVDPELTELAL 398 (848) T ss_pred ECCCCEEEECCCCCEEEEEEECCCCCCCCCCCCCEEEEEEEEECCHHHHHHHHHHHCCCHHHHHHHHCCCCCHHHHHHHH T ss_conf 53786799828997799985114656532266650699998605778999899883787125233113798888999999 Q ss_pred HHHHHHHCCCCCCC--CCCCEEEEECCCCCCCEECCCCHHHHHHCCCCCHHHHHHHHHHHHHHHHCCCCCCEEEECCCC- Q ss_conf 98887521233455--565258741355431000043113333113458789999999840222103456236640345- Q gi|254780316|r 374 KHIVSLILSLCGGT--ASDICIARNITYKPRKIVFMNSEVKRLSGIDVPIEDSLRILERLGFSVIGEYDKFEVSVPSWR- 450 (805) Q Consensus 374 ~r~~~Li~e~~gg~--~~~~~~~~~~~~~~~~I~l~~~~i~~ilG~~i~~~ei~~iL~~Lgf~v~~~~~~~~V~vPs~R- 450 (805) T Consensus 399 ~~A~~li~~~~~g~~~~~~~~~~~~~~~~~~~i~~~~~~~~~~lG~~~~~~~~~~iL~~Lg~~~~~~~~~~~v~vPs~R~ 478 (848) T TIGR00472 399 DRALNLILELAGGEDVISVVSDVYKEKKKEKKISLRLEKLNKILGTSLSDEEVRDILKRLGFKVEKQKEGLEVTVPSYRF 478 (848) T ss_pred HHHHHHHHHHCCCCCCCCEEEECCCCCCCCCEEEEEHHHHHHHHCCCCCHHHHHHHHHHCCCEEEECCCEEEEECCCCCC T ss_conf 99999998505844344015641444565537874189999870855578899999986596243436656984286356 Q ss_pred CCCCCHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCHHHHHHH---HHHHHHHHHHHHHCCCCCCCCHHHHHHHHHH Q ss_conf 4334402567676765352334667655443457678998895467---8988787787740232100482576552000 Q gi|254780316|r 451 QDVEEKADLVEEILRIYGVDQIKSEPLPLTQVEDKRNLSLQQSRTR---YVKRVLASRAMMEVVNWSFISKEQSVLFGGG 527 (805) Q Consensus 451 ~DI~~e~DLiEEIaRiyGYdnIp~~~l~~~~~~~~~~~~~~~~~~~---~ir~~L~~~Gf~Ev~tysl~s~~~~~~~~~~ 527 (805) T Consensus 479 ~Di~~~~Dl~EEi~R~yGyd~i~~~~~~~~~~~~~~~--~~~~~~~~~~~~~~~l~~~G~~E~itYsl~~~~~~~~~~~~ 556 (848) T TIGR00472 479 HDIEIEEDLIEEIARIYGYDNIEAEPLSVSSKNNKNN--ENQLLLKFLKKLRKLLVGLGLNEVITYSLVSKEKLEKFNFP 556 (848) T ss_pred CCCCCCCCHHEEHHHHCCCCCCCCCCCCCCCCCCCCC--CHHHHHHHHHHHHHHHHHCCCCEEEEECCCCHHHHHHHCCC T ss_conf 6756252121001324130001034532110244442--04578899999999998489857773013887999871687 Q ss_pred H-H----HCCCCCCCCCCCCCCCCHHHCHHHHHHHHHCCCCCCHHHHHHHCCCCCCCCC-CCCCEEHHHHCCCCCCCCCC Q ss_conf 0-0----0002467764321015122110677643210158611345430244447775-44310002210354310124 Q gi|254780316|r 528 Q-R----ELEILNPISADMSNMRTSLLPGLLKATGRNVDRAIADFAIFEVSHVYENDTP-EGQKYMAAGIRKGSSGIEGS 601 (805) Q Consensus 528 ~-~----~i~l~NPlS~e~s~lR~SLlp~LL~~~~~N~~r~~~~i~lFEiG~Vf~~~~~-~~~~~~~~~~~~~~~~~~~~ 601 (805) T Consensus 557 ~~~~~~~~~~i~NP~s~e~~~lR~sL~~sLL~~~~~N~~r~~~~~~lFE~G~~f~~~~~AR~e-~~~~~~e~~~La~~~~ 635 (848) T TIGR00472 557 KLENLDELVEIKNPLSEERSVLRTSLLPSLLEVLAYNQNRKNKDVKLFEIGKVFAKDGKARGE-EDEAVKEQLRLAILIS 635 (848) T ss_pred CCCCCHHEEEECCCCCHHHHHHHHHHHHHHHHHHHHHHHCCCCCEEEEEEEEEECCCCCCCCC-HHHHHHHHHHHEEEEE T ss_conf 778610104515898354788766446889999999986389715899887642688533575-0121234431100240 Q ss_pred CCCCCCCCCC--CCCCCCHHHHHHHHHHHHHHCCCC-C-CE----EEECCCCCCCCCCCEEEEEEC-CEEEEEEEEEECH Q ss_conf 6202345443--333146888753111111101453-3-30----330588656789816999987-9299999854778 Q gi|254780316|r 602 GRLWSDKSEE--RCRFVDLFDAKADALSVIEPFVSL-D-SL----RFESGAPSWYHPGRSGIIKTS-AEIVLGYFGEFHP 672 (805) Q Consensus 602 g~~~~~~~~~--~~~~~df~dlKg~v~~ll~~l~~~-~-~~----~~~~~~~~~~hPgrsa~I~~~-gk~iiG~iG~ihP 672 (805) T Consensus 636 G~~~~~~w~~~~~~~~~df~~~Kg~ve~~L~~l~~~~~~~~~~~~~~~~~~~~~~hP~~~a~i~~~~~~~~-G~iG~~hp 714 (848) T TIGR00472 636 GEKEPSSWNSKKKEEKVDFYDLKGIVESLLELLGLSESAAYEVLDFKEAAENEELHPGQSAEIYLKSGKLI-GFIGEVHP 714 (848) T ss_pred CCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHCCCCCCCCCCEEEEEEECCEEE-EEEEEECH T ss_conf 44566666001576656788999999999997086555302222113330565568873279998268289-99998855 Q ss_pred HHHHHCCCCCCEEEEEEEHHHHHHHHHCCCC-CCCCCCCCCCCCCEEEEEEEECCCCCHHHHHHHHHHCC-CCEEEEEEE Q ss_conf 9999668799789999878762354520245-66313689888720018999668879999999997111-003576989 Q gi|254780316|r 673 NILDFFGLSNPICGFEVYLDSIPISQKKRTK-TKKVVHLSSLHPVKRDLAFIVDQHIPAGTLVNIIKNVD-RLIDDVTVF 750 (805) Q Consensus 673 ~i~~~~~i~~~v~~~EI~ld~L~~~~~~~~~-~~~~~~~s~fP~v~RDls~iv~~~v~~~~I~~~i~~~~-~ll~~v~lf 750 (805) T Consensus 715 ~~~~~~~l~~~~~~~El~l~~l~~~~~~~~~~~~~~~~~s~~P~~~RDi~~~~~~~~~~~~i~~~~kk~~~~~l~~v~lf 794 (848) T TIGR00472 715 EIAKEYDLKEPTFVAELDLDRLLESLKKSRKLVPKYRPISKFPAVTRDISFLVPKDVPVNEIIKLIKKSGLELLEEVELF 794 (848) T ss_pred HHHHHHCCCCCEEEEEEEHHHHHHHHHHHCCEEEEEECCCCCCCCCCCEEEEECCCCCHHHHHHHHHHCCCCEEEEEEEE T ss_conf 89975079863599987278888652242211456532677885202288994587778999999974686689999999 Q ss_pred EEEECCCCC-CCCEEEEEEEEEECCCCCCCHHHHHHHHHHHHHHHHHHHCCEEC Q ss_conf 876367799-88426999999847798889999999999999999999511981 Q gi|254780316|r 751 DVFQGKSLG-EGKKSVAIQVLIQPLKDTFRDDDIRILMDRIVENVVKKTNAVLR 803 (805) Q Consensus 751 DvY~g~~i~-~gkkSla~rl~fqs~~kTLtd~EI~~i~~~ii~~l~~k~ga~LR 803 (805) T Consensus 795 DvY~g~~~~~~~~~S~~~~~~l~~~~~TL~~~~i~~~~~k~~~~L~~~~~~~lR 848 (848) T TIGR00472 795 DVYEGKNIGKEGKKSLALRLVLRDKERTLTDEEINKIVEKVLNLLKEKLGAELR 848 (848) T ss_pred EEEECCCCCCCCEEEEEEEEEEECCCCCCCHHHHHHHHHHHHHHHHHHHCCEEC T ss_conf 998468768887058999999986888888789999999999999998184609

HHsearch alignment for GI: 254780316 and conserved domain: TIGR00472