>TIGR01058 parE_Gpos DNA topoisomerase IV, B subunit; InterPro: IPR005740 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 II topoisomerases are ATP-dependent enzymes, and can be subdivided according to their structure and reaction mechanisms: type IIA (topoisomerase II or gyrase, and topoisomerase IV) and type IIB (topoisomerase VI). These enzymes are responsible for relaxing supercoiled DNA as well as for introducing both negative and positive supercoils . This entry represents subunit B (parE) of topoisomerase IV from Gram positive bacteria. Topoisomerase IV primarily decatenates DNA and relaxes positive supercoils, which is important in bacteria, where the circular chromosome becomes catenated, or linked, during replication . Topoisomerase IV consists of two polypeptide subunits, parC (subunit A), which is homologous to gyrA of topoisomerase II, and parE (subunit B), which is homologous to gyrB of topoisomerase II. More information about this protein can be found at Protein of the Month: DNA Topoisomerase .; GO: 0003677 DNA binding, 0003918 DNA topoisomerase (ATP-hydrolyzing) activity, 0005524 ATP binding, 0006265 DNA topological change, 0005694 chromosome.

Probab=100.00 E-value=0 Score=1600.13 Aligned_cols=619 Identities=40% Similarity=0.655 Sum_probs=583.0 Q ss_pred CCCCCHHHEEECCCCHHHHCCCCEEECCCCCCCHHHHHHHHHHHHHHHHHCCCCCEEEEEECCCCEEEEEECCCCCCCCC Q ss_conf 12369756023112103432698154677755022024436666787776189976999982898399996698434441 Q gi|254780222|r 41 SDNYDASSIRILEGLEPVRMRPGMYIGGTDEKALHHLFSEVIDNAMDEVIAGYANLIEVSLDGNGFLTVVDNGRGIPVEN 120 (686) Q Consensus 41 ~~~Y~~~~i~~L~glE~VrkRP~mYIGst~~~GL~~i~~EIldNavDe~~~g~~~~I~V~i~~dg~IsV~ddGrGIPv~~ 120 (686) T Consensus 8 ~~~Y~~~aI~iLeGL~AVrKRPGMYIGSTds~GLHHl~wEIvdNsvDEvl~g~a~~I~V~l~~dnsi~V~D~GRG~P~~~ 87 (655) T TIGR01058 8 IFDYNEDAIKILEGLDAVRKRPGMYIGSTDSKGLHHLVWEIVDNSVDEVLAGYADNITVTLHKDNSISVQDDGRGIPTGI 87 (655) T ss_pred CCCCCCHHHHHHHCCHHHCCCCCCEECCCCCCCCHHHHHHHHHHHHHHHHHCCCCEEEEEEECCCEEEEEECCCCCCCCH T ss_conf 00355024677520000015898412256878505567878844688898226974799982787078875785376012 Q ss_pred CCCCCCCEEEEEEEEEEECCCCCCCCCEEEECCCCCHHHHHHHHEEEEEEEEEECCCEEEEEEEECC-CEECCCEECCCC Q ss_conf 7665787012345452002477777741563144538898762032126999941883899997279-451131121676 Q gi|254780222|r 121 HPKFPNKSTLEIILTTLHAGGKFDNSTYEISGGLHGVGISVVNALSDELHVTVARQNTIFSQKFSRG-IPLSPLEKKEKV 199 (686) Q Consensus 121 h~k~~~~~~~Elif~~L~aggnfdd~~yk~sgGlnGvGaklvNalS~~f~Vev~r~gk~y~q~f~~g-~~~~~~~~i~~~ 199 (686) T Consensus 88 h~~-~~isT~e~vlT~LHAGGKFd~~~YKtaGGLHGVGaSVVNALS~wL~v~v~Rdg~iYq~~f~nGGk~~~~lkkIG~t 166 (655) T TIGR01058 88 HKQ-GKISTVETVLTVLHAGGKFDQGGYKTAGGLHGVGASVVNALSSWLEVEVKRDGKIYQQRFENGGKIVQSLKKIGTT 166 (655) T ss_pred HCC-CCCCCCCEEEEEEECCCCCCCCCEEECCCCCCCHHHHHHHCCCCEEEEEEECCHHHHHHHHCCCCEEEEEEECCCC T ss_conf 216-8988510045443077303786501057322303677640226338999878734457874479130001020478 Q ss_pred -CCCCCEEEEEEECHHHEECCCCCCHHHHHHHHHHHHHCCCCCEEEEECCCCCCCCCCCCCEEEEEECCCCHHHHHCCCC Q ss_conf -7788539999984243200122228999998888753057735999516453222455411234315861222100246 Q gi|254780222|r 200 -RNKRGTRITFRPDPKIFGDKAGFDAARLLKMTQSKAYLSGRVKTCWSCDKEIAEKYGIPEKEEFYFPGGLKTYLQTKLE 278 (686) Q Consensus 200 -~~k~GT~ItF~PD~~iFg~~~~~d~~~l~~rl~~~A~L~~gl~i~~~~~~~~~~~~~~~~~~~f~~~~Gi~dyv~~~~~ 278 (686) T Consensus 167 pk~ktGT~v~F~pDp~~F~-~~~F~~n~i~eRL~Es~FLlk~lkl~l~D~~~-------~~~~~F~~~~Gl~~F~~~~Ne 238 (655) T TIGR01058 167 PKKKTGTLVHFLPDPTIFK-TTQFNSNIIKERLKESAFLLKKLKLTLTDKRT-------DKKTVFFYENGLVDFVKYINE 238 (655) T ss_pred CCCCCCCEEEECCCCHHHC-CCCCCHHHHHHHHHHHHHHHHCCEEEEEEECC-------CCEEEEEECCCHHHHHHHHCC T ss_conf 8877773477556713330-24567267876766888877147389997026-------721777300447899998535 Q ss_pred CCCCCCCCCEEEEEEECCCEEEEEEEEEEECCCCCC-EEEEEEECCCCCCCEEECCHHHHHHHHHHHHHHHCC--CCCCC Q ss_conf 776667752033332148015589998541467774-278883000655752413046789999998763018--83322 Q gi|254780222|r 279 NRSLISSEIFTGKTEKKGTHRGTVEWAIAWCEENPE-ITSYCNTILTDEGGTHESGLRVALTRGIKKYAELTQ--NKRAI 355 (686) Q Consensus 279 ~~~~~~~~~~~~~~~~~~~~~~~veval~~~~~~~~-~~SFVN~I~T~~GGTHv~g~~~ai~k~i~~~~~~~~--~kk~~ 355 (686) T Consensus 239 ~k~~l~~-v~~f~ge~~~---i~Ve~afQfnd~~~e~ilSF~N~vkT~eGG~HE~g~k~A~t~v~N~YaRK~~LLKEKDK 314 (655) T TIGR01058 239 EKETLSD-VIYFEGEKNG---IEVEVAFQFNDGDSENILSFANSVKTKEGGTHENGFKLAITKVINEYARKVNLLKEKDK 314 (655) T ss_pred CCEECCC-EEEEEECCCC---EEEEEEEEECCCCCCEEEEEEEEEEECCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCC T ss_conf 5000123-4588764762---58999997427887537986400340688720788999999998655432001110014 Q ss_pred CCCCCCCCCCEEEEEEEEEEHH--HCCCCCCCCCCCHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 2332222364269999776345--60764466202523200001210158899977401356889999999999654544 Q gi|254780222|r 356 SIISDDLMISAVGILSVFIREP--EFAGQTKTKLVSLDAQRTVENALRDPFDHYLVQNPIEATKLLEWVIERSEERLRRR 433 (686) Q Consensus 356 ~i~~~dIk~~L~~~Isv~I~nP--~FesQTKekL~s~~~~~~v~~~i~~~l~~~l~~n~~~a~~I~~~~~~~a~~r~~~~ 433 (686) T Consensus 315 Nleg~diReGL~avi~v~~PE~~~~fEGQTK~Klf~~ea~~~V~~~v~~~~~~fLeeN~~~A~~lv~kai~Ar~akeaak 394 (655) T TIGR01058 315 NLEGSDIREGLSAVISVRIPEELIQFEGQTKSKLFSPEAREVVDEIVEDKLSFFLEENKEDAKLLVKKAIKARDAKEAAK 394 (655) T ss_pred CCCCCHHHHHHHHEEEEECCHHHCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 78710345320211553257545245760576678766899999999888899997435789999999988899999998 Q ss_pred HHHHHHHHHH---CCCCCCCCCCCCCCCCCCCEEEEEEECCCCCCCCHHHCCCCCCEEEEEECCEECCHHHHH-HHHHHC Q ss_conf 3344422110---024565333567765655403799732767642100101122201221123131445410-877632 Q gi|254780222|r 434 KQREVNRKTA---IRKLRLPGKLADCSQNIAHGTELFIVEGDSAGGSAKQARNRSNQAVLPLRGKILNVASAG-SEKIRN 509 (686) Q Consensus 434 k~k~~~rk~~---~~~~~lpgKL~Da~~~~~~~~eL~lvEGDSA~gsAk~grdr~~qgi~PLRGKiLNv~~as-~~ki~~ 509 (686) T Consensus 395 ~aRee~k~~kk~kk~~g~l~GKLtPaqsk~p~~nELflVEGDSAGGsAK~GRdr~fQAiLPLRGKVlNv~Ka~n~~d~lk 474 (655) T TIGR01058 395 KAREEKKSGKKRKKEKGILSGKLTPAQSKNPAKNELFLVEGDSAGGSAKLGRDRKFQAILPLRGKVLNVEKAKNLADILK 474 (655) T ss_pred HHHHHHHCCCCCCHHCCCCCCCCCCCCCCCCHHHCEEEEECCCCCCCCCCCCCCCEEEECCCCCCEEHHHHHHHHHHHHC T ss_conf 74566513564201111101113776775611105257851368875333678530342266750103778876888740 Q ss_pred CHHHHHHHHHHCCCCCCCCCCCCCCCCCEEEEECCCCCCHHHHHHHHHHHHHHHHHHHHCCCEEEECCCEEEEEEC--CE Q ss_conf 2889999988256654333334655251899977987714688999999998708886339389930996999748--97 Q gi|254780222|r 510 NQQIMDLVQALGCRTRSQYREEDLRYEKVIIMTDADVDGAHIASLLLTFFYQEMYDLIEQKHLFLISPPLFRITQG--TK 587 (686) Q Consensus 510 N~Ei~~l~~~lGl~~g~~~~~~~LRYgkIiImTDaD~DGsHI~~Lll~ff~~~~p~Li~~g~v~~~~tPl~kv~~g--~~ 587 (686) T Consensus 475 NEEI~t~i~~iG~Giga~F~i~d~~Y~KIIIMTDADtDGaHIQ~LLLTfFYRyM~PLiE~G~vYiALPPLYKl~~k~~Kk 554 (655) T TIGR01058 475 NEEINTIIFCIGTGIGADFSIKDLKYDKIIIMTDADTDGAHIQVLLLTFFYRYMRPLIELGHVYIALPPLYKLSKKDGKK 554 (655) T ss_pred CCHHHHHHHHHCCCCCCCCCHHHCCCCCEEEEECCCCCCHHHHHHHHHHHHHHCCCHHHCCCEEEECCCCCCCCCCCCCE T ss_conf 30488999981665125643654167867996358988318999999988761452204683378368720022799854 Q ss_pred --EEEECCHHHHHHHHHHHHHCCCCCEEEEEEECCCCCCHHHHHHHCCCCCCEEEEEEEECCCCCCHHHHHHHHHHHCCC Q ss_conf --999378999999999877417886078685067788988998860394000799998664102679899999988079 Q gi|254780222|r 588 --SVYAHDEEHKQKILEEFKKHGKGKIEISRFKGLGEMLASQLKETAMDANKRTLLRVEINKDLNSLKDTQDSINKLMGT 665 (686) Q Consensus 588 --~~y~~~e~e~~~~~~~~~~~~~~k~~i~ryKGLGe~~~~e~~et~~~p~~r~l~~v~~~~~~~~~~~~~~~f~~lmG~ 665 (686) T Consensus 555 E~~~YaW~D~EL~~~~k~~G----kn~tlQRYKGLGEMNADQLweTTMnP~~R~Lv~v~i~D----~~~aEr~in~lMG~ 626 (655) T TIGR01058 555 EIVKYAWSDLELEELKKKLG----KNYTLQRYKGLGEMNADQLWETTMNPETRTLVRVKIDD----LARAERQINTLMGD 626 (655) T ss_pred EEEEEECCCHHHHHHHHHHC----CCCEEEEECCCCCCCHHHHCCCCCCCCCCEEEEEEHHH----HHHHCCEEEEEECC T ss_conf 78887127212899999737----98167754377643402310146889864188872678----86213303332178 Q ss_pred CHHHHHHHHHHHHHH Q ss_conf 816899999975246 Q gi|254780222|r 666 KADERFKFIQERASF 680 (686) Q Consensus 666 ~~~~RK~wi~~~~~~ 680 (686) T Consensus 627 kv~~Rk~WIe~Ni~F 641 (655) T TIGR01058 627 KVELRKKWIEANIDF 641 (655) T ss_pred CCCHHHHHHHHHCCC T ss_conf 730336746530032

HHsearch alignment for GI: 254780222 and conserved domain: TIGR01058