>TIGR01054 rgy reverse gyrase; InterPro: IPR005736 DNA topoisomerases regulate the number of topological links between two DNA strands (i.e. change the number of superhelical turns) by catalysing transient single- or double-strand breaks, crossing the strands through one another, then resealing the breaks. These enzymes have several functions: to remove DNA supercoils during transcription and DNA replication; for strand breakage during recombination; for chromosome condensation; and to disentangle intertwined DNA during mitosis , . DNA topoisomerases are divided into two classes: type I enzymes (5.99.1.2 from EC; topoisomerases I, III and V) break single-strand DNA, and type II enzymes (5.99.1.3 from EC; topoisomerases II, IV and VI) break double-strand DNA . Type I topoisomerases are ATP-independent enzymes (except for reverse gyrase), and can be subdivided according to their structure and reaction mechanisms: type IA (bacterial and archaeal topoisomerase I, topoisomerase III and reverse gyrase) and type IB (eukaryotic topoisomerase I and topoisomerase V). These enzymes are primarily responsible for relaxing positively and/or negatively supercoiled DNA, except for reverse gyrase, which can introduce positive supercoils into DNA. Reverse gyrase is a type IA topoisomerase that is unique among these enzymes in its requirement for ATP. Reverse gyrase is a hyperthermophile-specific enzyme that acts as a renaturase by positively supercoiling DNA, and by annealing complementary single-strand circles . Hyperthermophilic organisms must protect themselves against heat-induced degradation, and reverse gyrase acts to reduce the rate of double-strand DNA breakage, a function that does not require ATP hydrolysis and which is independent of its positive supercoiling abilities. Reverse gyrase achieves this by recognising nicked DNA and recruiting a protein coat to the site of damage . More information about this protein can be found at Protein of the Month: DNA Topoisomerase .; GO: 0003677 DNA binding, 0003916 DNA topoisomerase activity, 0006265 DNA topological change, 0006268 DNA unwinding during replication, 0005694 chromosome.

Probab=100.00 E-value=0 Score=778.66 Aligned_cols=521 Identities=32% Similarity=0.510 Sum_probs=390.3 Q ss_pred EEEECCHHHHHHHHHHHCC------------------C------------C--EEEEEECCCEECCCCC----CCCCCCC Q ss_conf 8997790478778875089------------------9------------8--9999425110078655----7867666 Q gi|254780306|r 3 VIIVESPAKAKTISKYLGS------------------N------------Y--KVLSSFGHIRDLPAKK----GSVLPEK 46 (837) Q Consensus 3 LvIvEsP~kak~I~~~Lg~------------------~------------y--~V~as~GHirdLp~~~----~~v~~~~ 46 (837) T Consensus 661 L~vVESPnKARTIA~FFGkP~~R~iP~~~~vYEv~~gDkilmim~~~G~V~~L~iTas~GHv~DL~t~~~~~f~GV~~~~ 740 (1843) T TIGR01054 661 LLVVESPNKARTIARFFGKPSVRKIPGGSVVYEVPVGDKILMIMAETGDVLVLVITASLGHVFDLVTDKVGGFYGVLVEN 740 (1843) T ss_pred EEEEECCCCHHHHHHHCCCCCCEECCCCCEEEEEEECCEEEEEECCCCCEEEEEEEEECCCHHHHCCCCCCCEEEEEEEC T ss_conf 79982786044553430699635515985389986168289985189837899998411002110367446342115305 Q ss_pred C-----CCEEEEECC--------------------------------CHHHHHHHHHHHHHHCCEEEECCCCCCHHHHHH Q ss_conf 7-----440688776--------------------------------548999999999870998999469970257999 Q gi|254780306|r 47 E-----FEMIWNIDP--------------------------------SSQKHLQNIIHAVKSSTILILATDPDREGEAIS 89 (837) Q Consensus 47 ~-----f~p~y~v~~--------------------------------~~kk~~~~i~~~~k~a~~iilAtD~DREGE~Ia 89 (837) T Consensus 741 ~~g~~~Y~PvY~sIKrC~dcG~QfTd~~~leeli~e~cpkcgs~~~~d~~~~ve~lR~lA~EvD~v~iaTDPDtEGEKIg 820 (1843) T TIGR01054 741 GEGAEAYVPVYTSIKRCRDCGEQFTDEEDLEELIKELCPKCGSENIEDSKSIVEILRELASEVDEVFIATDPDTEGEKIG 820 (1843) T ss_pred CCCCCCCEEEECCCCEECCCCCCCCCHHHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHHHHHHCEEEECCCCCCCCCCHH T ss_conf 88965420044110113358874367155899999860257875556526788999875444298887258898754089 Q ss_pred HHHHHHHHHHCCCCCCCEEEEEEECCCHHHHHHHHHCCC-----CCCHHHHHHHHHHHHHHHHHHHHHCHHHHHHCC--- Q ss_conf 999999755125788716999980379899999986226-----469899999999999898740113789886414--- Q gi|254780306|r 90 WHVLDVLRQKNLIEKTKIQRVSFNAITKQVVLNAMKSPR-----DINLDLVNAYLARRALDYLVGFNLSPILWQKLP--- 161 (837) Q Consensus 90 whi~e~l~~~~~~~~~~v~R~~f~eiT~~aI~~A~~n~r-----~~d~~Lv~A~~aRr~lD~lvG~~lSp~L~rk~~--- 161 (837) T Consensus 821 wDl~~~~~Py----~pnv~R~eFHEVT~rAi~eAl~s~rkGeel~vd~NLVkAQvVRRI~DRWiGF~LS~~Lw~~F~Pry 896 (1843) T TIGR01054 821 WDLALLLRPY----NPNVKRAEFHEVTKRAILEALESPRKGEELSVDENLVKAQVVRRIEDRWIGFTLSQKLWEAFNPRY 896 (1843) T ss_pred HHHHHHHCCC----CCCEEEECCCCCCHHHHHHHHCCCCCCCCCCCCCCCCCEEEEEEEEEEEECEEECHHHHHCCCCCH T ss_conf 9999980887----775246214562379999986087657501000231011588898754003011547772248504 Q ss_pred ------------CCCC--------------CCCHHHHHHHHHHHH---HH----HHHHCCCCCCEEEEEEEECCCC--CE Q ss_conf ------------6765--------------342268999999999---99----9641376544001223315799--65 Q gi|254780306|r 162 ------------GARS--------------AGRVQSVALRLICNR---EN----QIESFVSEEYWSLSVLLETPRN--DK 206 (837) Q Consensus 162 ------------~~lS--------------aGRVQtp~L~lIveR---e~----eI~~F~p~~y~~i~a~~~~~~~--~~ 206 (837) T Consensus 897 CkrvleeyGekk~wLsrerCakykayynlsAGRVQTPVLGWiidRtlay~kkvWe~r~--~~~~~l~~~~-~-~d~~evP 972 (1843) T TIGR01054 897 CKRVLEEYGEKKPWLSRERCAKYKAYYNLSAGRVQTPVLGWIIDRTLAYRKKVWEYRE--KRGSLLLFAL-E-SDDPEVP 972 (1843) T ss_pred HHHHHHHHCCCCCCCCHHHHHHHHHHHCCCCCEEECCCCCEEEEEEEHHCCCEEEEEE--ECCEEEEEEE-E-CCCCCCC T ss_conf 6788874011267778556554322210358705005145067510021001001234--5133999998-2-5881023 Q ss_pred EEEEEEEECCEEECCCCHHHHHHHHHHHHHHCCCCCEEEEEECCCC--CCCCCCCCCHHHHHHHHHHHHCCCHHHHHHHH Q ss_conf 4223310358330331011356667776420015630100002332--22468521037999998876088899999999 Q gi|254780306|r 207 FTAHLTDFNGQRIEKKSISNKKEADDLISFVKKATYSVEKIENKPI--KRNPWPAFTTSTLQQVASSRLGFSASHTMRIA 284 (837) Q Consensus 207 f~a~l~~~~~~~~~~~~~~~~~~a~~~~~~~~~~~~~V~~v~~k~~--~~~Pp~Pf~tstLQq~As~~lg~sa~~Tm~iA 284 (837) T Consensus 973 ~~~~~-----------~~~d~~~~~~~~~~l~--~~dV~~~~~~EEWt~~~PlPPYTTDT~L~dAn~~l~LS~~~~M~IA 1039 (1843) T TIGR01054 973 FRLKL-----------ELDDKLEAKEFEKDLK--ELDVKVVEEKEEWTERNPLPPYTTDTMLEDANRKLGLSAKKAMKIA 1039 (1843) T ss_pred EEEEE-----------EEECHHHHHHHHCCCC--EEEEEEECCCEEECCCCCCCCCCHHHHHHHHHHHHCCCHHHHHHHH T ss_conf 46433-----------5421135432202541--4665541673000368500188756789998776357978999999 Q ss_pred HHHHCCCCCCCHHHHHHHHCCCC-----CC----------------------------------------CCC------- Q ss_conf 87621355672122455314755-----44----------------------------------------443------- Q gi|254780306|r 285 QKLYEGIDVNGEIVGLITYMRTD-----GV----------------------------------------HMS------- 312 (837) Q Consensus 285 Q~LYE~~~~~~~~~GlITYpRTD-----S~----------------------------------------~ls------- 312 (837) T Consensus 1040 QeLFE--------~GLITtPdtyvvlGdGrietiedivnakernvlsldldnlsikidtaikfWklrynGnlskitlsnn 1111 (1843) T TIGR01054 1040 QELFE--------LGLITTPDTYVVLGDGRIETIEDIVNAKERNVLSLDLDNLSIKIDTAIKFWKLRYNGNLSKITLSNN 1111 (1843) T ss_pred HHHHH--------CCCCCCCCCEEEECCCCCHHHHHHHHHCCCCEEEEECCCCEEEEHHHHEEEEEEECCCEEEEEEECC T ss_conf 98851--------5311288527996387103678764000121334420210121000200000002365013553035 Q ss_pred -------------------------------------------------------------------------------- Q ss_conf -------------------------------------------------------------------------------- Q gi|254780306|r 313 -------------------------------------------------------------------------------- 312 (837) Q Consensus 313 -------------------------------------------------------------------------------- 312 (837) T Consensus 1112 yelkatPdhCllvlrdnqlkWiPakdikendyiamPfnykverkPisllnllkylditdvliefdenstifekiaeyirn 1191 (1843) T TIGR01054 1112 YELKATPDHCLLVLRDNQLKWIPAKDIKENDYIAMPFNYKVERKPISLLNLLKYLDITDVLIEFDENSTIFEKIAEYIRN 1191 (1843) T ss_pred CCCCCCCCEEEEEEECCCCEECCCCCCCCCCEEECCCCCEECCCCHHHHHHHHHHHHHHHEEEECCCCHHHHHHHHHHHH T ss_conf 21114777058988506400024223555652634533101145136888887631411102314651388999999874 Q ss_pred -------------------------------------------------------------------------------- Q ss_conf -------------------------------------------------------------------------------- Q gi|254780306|r 313 -------------------------------------------------------------------------------- 312 (837) Q Consensus 313 -------------------------------------------------------------------------------- 312 (837) T Consensus 1192 niktstkykylrnrrvPlkylieWnfdldeiekeakyiyksvaGtkkiPlfklderfWyfaGlvlGdGsiqdskiriaqt 1271 (1843) T TIGR01054 1192 NIKTSTKYKYLRNRRVPLKYLIEWNFDLDEIEKEAKYIYKSVAGTKKIPLFKLDERFWYFAGLVLGDGSIQDSKIRIAQT 1271 (1843) T ss_pred HHHHHHHHHHHHCCCCCHHEEEEECCCHHHHHHHHHHHHHHCCCCCCCCCEEECCHHEEEEEEEECCCCEECCEEEEECC T ss_conf 21022322333215674000123035656665443422111035433540211110000001134166200140233237 Q ss_pred ------------------------------------------------------HH------------------------ Q ss_conf ------------------------------------------------------05------------------------ Q gi|254780306|r 313 ------------------------------------------------------PD------------------------ 314 (837) Q Consensus 313 ------------------------------------------------------~e------------------------ 314 (837) T Consensus 1272 PlkdvksildetfPflhnWisGnqviisnPiiaeileklGmrnGklnGiifslPesyinaliaGyfdtdGCfsllydkka 1351 (1843) T TIGR01054 1272 PLKDVKSILDETFPFLHNWISGNQVIISNPIIAEILEKLGMRNGKLNGIIFSLPESYINALIAGYFDTDGCFSLLYDKKA 1351 (1843) T ss_pred CHHHHHHHHHHCCHHHHHHCCCCEEEEECCHHHHHHHHHCCCCCCCCEEEEECCHHHHHHHHHHCCCCCCCEEHHHHHHH T ss_conf 63678988741011354420566268706259999987066566402157744267887887200135741100111010 Q ss_pred -----------------------------------------------HHHHHH----HHHH------------------H Q ss_conf -----------------------------------------------689999----7655------------------2 Q gi|254780306|r 315 -----------------------------------------------ALEAVR----RSIT------------------S 325 (837) Q Consensus 315 -----------------------------------------------a~~~~r----~~i~------------------~ 325 (837) T Consensus 1352 kkhnlrmvltskrrdvlekiGiylnsiGilntlhksrevysliisnksletfkekiakylkirkeafinGyktykkehee 1431 (1843) T TIGR01054 1352 KKHNLRMVLTSKRRDVLEKIGIYLNSIGILNTLHKSREVYSLIISNKSLETFKEKIAKYLKIRKEAFINGYKTYKKEHEE 1431 (1843) T ss_pred HHCCEEEEEECHHHHHHHHHHHHHHHHHHHHHHHHHHHEEEEEEECCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 00111245510145677764256645677764421100123232201167899999998876666654113444222110 Q ss_pred HCCCCCCC------------------------------------------------------------------------ Q ss_conf 00112376------------------------------------------------------------------------ Q gi|254780306|r 326 HYGDHYLP------------------------------------------------------------------------ 333 (837) Q Consensus 326 ~~g~~~l~------------------------------------------------------------------------ 333 (837) T Consensus 1432 rfeCdllPvkevfkkltfekGrkeilkdskihienWykektnniPreklktvlryannsehkeflekivnGdisfvrvkk 1511 (1843) T TIGR01054 1432 RFECDLLPVKEVFKKLTFEKGRKEILKDSKIHIENWYKEKTNNIPREKLKTVLRYANNSEHKEFLEKIVNGDISFVRVKK 1511 (1843) T ss_pred HHCCCCCCHHHHHHHHHHHCCHHHHHHCCCCHHHHHHHHHHCCCCHHHHHHHHHHHCCCHHHHHHHHHHCCCEEEEEEEE T ss_conf 00123232788987642210104443103000222232220367456788887641251257888887437512799864 Q ss_pred ------------------------------------CCCCCCC-CCCCCCC-----------------------CCCCCE Q ss_conf ------------------------------------3111125-5666887-----------------------776524 Q gi|254780306|r 334 ------------------------------------EKPRIYS-SKSKNAQ-----------------------EAHEAI 353 (837) Q Consensus 334 ------------------------------------~~~r~y~-~k~k~aQ-----------------------eAHeAI 353 (837) T Consensus 1512 veniPydGyvydlsikhnqnfisnGvishnCtYHRTDSTRVSd~Gk~~vAkEYL~~~fGGl~~e~f~pR~WGEgGAHEcI 1591 (1843) T TIGR01054 1512 VENIPYDGYVYDLSIKHNQNFISNGVISHNCTYHRTDSTRVSDVGKMRVAKEYLEKRFGGLGEELFYPREWGEGGAHECI 1591 (1843) T ss_pred EECCCCCCEEEEEEEECCCCHHHCCEEECCCCEECCCCCEECCCCCEEEEHHHHHHHCCCCHHHCCCCCCCCCCCCEECC T ss_conf 31266665268645400332000561432652102765103454660000357763237730121568834787865356 Q ss_pred EEEECCCCCC-----------HHCCCCCHHHHHHHHHHHHHHHHHHHHHHE------------ECCCEEEEEEEECCCEE Q ss_conf 7730234640-----------000019999999999999999998522211------------00100136774079639 Q gi|254780306|r 354 RPNDFDFLPS-----------KMKQFLDSDQFQLYNLIWKRSVASQMASAK------------FERTTVNIIATYNDQIG 410 (837) Q Consensus 354 rPT~~~~~p~-----------~~~~~L~~de~klY~LI~~R~lasqm~~a~------------~~~~~v~i~~~~~~~~~ 410 (837) T Consensus 1592 RPtrPl-d~~dL~~~~~~G~i~~~~~L~~~hl~lYdLIFrRFmASQMkpa~alrvvyrlrvPev~~~~~~l~~~g~e--- 1667 (1843) T TIGR01054 1592 RPTRPL-DVEDLERLVLEGVIELEGRLRRNHLKLYDLIFRRFMASQMKPAKALRVVYRLRVPEVDTKEITLKADGKE--- 1667 (1843) T ss_pred CCCCCC-CHHHHHHHHHCCCEEECCHHHHHHHHHHHHHHHHHHHHCCCCCCEEEEEEEEECCEEEEEEEEEEECCCE--- T ss_conf 876878-9899999986392330430168998886678764133107722025677676346056789999754601--- Q ss_pred EEEEEEEEEECCCHHHHHCCCCCCCCCCHHHCCCCCCCCCCCCCCEEEECCCCCCCCC-CCCCHHHHHHHHHHCCCCCCC Q ss_conf 9999874880588567632677763210010148864568821100110111234643-101789987433210256655 Q gi|254780306|r 411 HLRTTGSLLCFDGFLKVWENQYDQEKNSEEDILLPYISANEQLIATETNASQHFTEPP-PRYSESSLIKKMEEIGIGRPS 489 (837) Q Consensus 411 ~F~asg~~i~~~G~~~vy~~~~~~~~~~~~~~~LP~l~~g~~~~~~~~~~~~~~TkPP-~rytEasLik~mE~~GIGrPS 489 (837) T Consensus 1668 ~~~~~~v~~~~~Gf~l~yp~~~~~---------~~~~~k~~~~~~~~~e~~~VPKv~lkrlYt~G~iv~~MK~RGIGRPS 1738 (1843) T TIGR01054 1668 VEEEGVVEIKERGFELVYPLKRKE---------PRLVEKGSLLIRKDKELRKVPKVYLKRLYTQGEIVKEMKERGIGRPS 1738 (1843) T ss_pred EEEEEEEEEEECCHHHCCCCCCCC---------CCCCCCCCCHHHHHHHCCCCCCCCCCCCCCCCHHHHHHHHCCCCCCC T ss_conf 311246887503202005624777---------53355664010112220407642530115631476886446775985 Q ss_pred CHHHHHHHHHHCCEEECCCC-------CEEECCHHHHHCCCCCC--C-----------------CCCCCCHHHHHHHHHH Q ss_conf 15789999973220221477-------12220114200002233--6-----------------6556898899999999 Q gi|254780306|r 490 TYATILETLYKRKYVIAEKR-------KILPQNTGRIVTAFLEN--F-----------------FSQYVEYDFTADLEEK 543 (837) Q Consensus 490 TyA~II~~L~~R~YV~~~~~-------~l~pT~~G~~v~~~L~~--~-----------------f~~~~~~~fTa~~E~~ 543 (837) T Consensus 1739 TYA~Iv~~Ll~R~YVvE~~~~eGrG~~~lIPTklG~~VY~YL~~~~~sadeeeyGGriaGilrr~p~lvSEd~TR~LEe~ 1818 (1843) T TIGR01054 1739 TYAKIVEKLLERGYVVESKGKEGRGARFLIPTKLGIEVYEYLTNEKKSADEEEYGGRIAGILRRYPKLVSEDRTRELEEA 1818 (1843) T ss_pred HHHHHHHHHCCCCCEEEEECCCCCCCCCCCCCCCCCHHHHHHHCCCCCCCCHHCCCEEHHHHHHCCCCCCCCHHHHHHHH T ss_conf 58999998622897787516656757521455366158876200135654101265000243314653351010689988 Q ss_pred HHHHHCCCHHHHHHHHHHHHHH Q ss_conf 9998626013478999986767 Q gi|254780306|r 544 LDEISTGKLNWKEVLHEFWEEF 565 (837) Q Consensus 544 ld~Ia~G~~~~~~~L~~Fy~~f 565 (837) T Consensus 1819 MD~vE~G~~dy~~VL~~l~~~i 1840 (1843) T TIGR01054 1819 MDKVEKGELDYLEVLEELYREI 1840 (1843) T ss_pred HHHHHCCCCCHHHHHHHHHHHH T ss_conf 6355268779899999999997

HHsearch alignment for GI: 254780306 and conserved domain: TIGR01054