>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=1850.09 Aligned_cols=627 Identities=49% Similarity=0.841 Sum_probs=599.7 Q ss_pred CCCCC-CCCCCCHHHCEECCCCCHHCCCCCCEECCCCCCCHHHHHHHHHHHHHHHHHHHCCCCEEEEEECCCCEEEEEEC Q ss_conf 98764-22367865512313542000458715432799632544565675557886860779757999838983999976 Q gi|254780814|r 1 MSDNI-QNSSYDADSIQILKGLDAVKKRPSMYIGDTDGESGLHHMIYEVLDNAIDESLEGYADIITVTLNMDGSCTVSDN 79 (803) Q Consensus 1 m~~~~-~~~~Y~~~~i~~L~gle~vrkRP~mYiG~t~~~~Gl~hlv~EiidNsvDe~~~g~~~~I~V~i~~dgsisV~dn 79 (803) T Consensus 1 M~~k~~~~~~Y~~~aI~iLeGL~AVrKRPGMYIGSTd-s~GLHHl~wEIvdNsvDEvl~g~a~~I~V~l~~dnsi~V~D~ 79 (655) T TIGR01058 1 MAKKEINIFDYNEDAIKILEGLDAVRKRPGMYIGSTD-SKGLHHLVWEIVDNSVDEVLAGYADNITVTLHKDNSISVQDD 79 (655) T ss_pred CCCCCCCCCCCCCHHHHHHHCCHHHCCCCCCEECCCC-CCCCHHHHHHHHHHHHHHHHHCCCCEEEEEEECCCEEEEEEC T ss_conf 9745552003550246775200000158984122568-785055678788446888982269747999827870788757 Q ss_pred CCCCCCCCCCCCCCCEEEEEEEEECCCCCCCCCCCEEECCCCCCEEEEEEECCCEEEEEEEECCEEEEEEEECC-EECCC Q ss_conf 84453640777885001256425011323289860483116752037786326449999997895999998898-36463 Q gi|254780814|r 80 GRGIPTDLHKEEGISAAEVIMTRLHAGGKFNQKSYKVSGGLHGVGVSVVNALSSWLKLRIKREGNIYEMSFING-ILDNP 158 (803) Q Consensus 80 GrGIPv~~h~~~~~~~~E~i~t~L~ag~kfd~~~yk~sgGlhGvG~s~vNalS~~~~v~v~rdgk~~~q~f~~g-~~~~~ 158 (803) T Consensus 80 GRG~P~~~h~~~~isT~e~vlT~LHAGGKFd~~~YKtaGGLHGVGaSVVNALS~wL~v~v~Rdg~iYq~~f~nGGk~~~~ 159 (655) T TIGR01058 80 GRGIPTGIHKQGKISTVETVLTVLHAGGKFDQGGYKTAGGLHGVGASVVNALSSWLEVEVKRDGKIYQQRFENGGKIVQS 159 (655) T ss_pred CCCCCCCHHCCCCCCCCCEEEEEEECCCCCCCCCEEECCCCCCCHHHHHHHCCCCEEEEEEECCHHHHHHHHCCCCEEEE T ss_conf 85376012216898851004544307730378650105732230367764022633899987873445787447913000 Q ss_pred CEEECCC-CCCCCEEEEEEECHHHHHHHHCCHHHHHHHHHHHHCCCCEEEEEEEECCCCCCCEEEECCCCCCHHHHHHHC Q ss_conf 1387327-788870899987788854210008999999997311464169999963586421010012688357765300 Q gi|254780814|r 159 LVVTGSA-GNDTGTEVTFLPSSDIFSVQDFNYDTLQHRLRELSFLNSSVQISLIDKRSPEPREITMFYKGGIEAFVSYLD 237 (803) Q Consensus 159 l~~~~~~-~~~~GT~I~F~PD~~iF~~~~~~~d~l~~R~~~~A~Ln~gl~i~l~Der~~~~~~~~f~~~~Gi~~fv~~l~ 237 (803) T Consensus 160 lkkIG~tpk~ktGT~v~F~pDp~~F~~~~F~~n~i~eRL~Es~FLlk~lkl~l~D~~~~--~~~~F~~~~Gl~~F~~~~N 237 (655) T TIGR01058 160 LKKIGTTPKKKTGTLVHFLPDPTIFKTTQFNSNIIKERLKESAFLLKKLKLTLTDKRTD--KKTVFFYENGLVDFVKYIN 237 (655) T ss_pred EEECCCCCCCCCCCEEEECCCCHHHCCCCCCHHHHHHHHHHHHHHHHCCEEEEEEECCC--CEEEEEECCCHHHHHHHHC T ss_conf 10204788877773477556713330245672678767668888771473899970267--2177730044789999853 Q ss_pred CCCCCCCCCCEEEEEEEEEEEEEEEEEECCCCCCEEEEEECCCCCCCCCCEEHHHHHHHHHHHHHHHHHCCCCCCCCCCC Q ss_conf 35655688520364200369997334531775412122224621666772103568889999999998624200012357 Q gi|254780814|r 238 RHKKPLMQSPIRIQGSRDNISIDLAMRWNDGYHENVLCFTNNIPQKDGGTHLSGLRSALTRQITSYVEKSFGSKKDKRSV 317 (803) Q Consensus 238 ~~~~~~~~~~i~~~~~~~~~~veval~~~~~~~e~i~SfvN~I~T~~GGtHv~gf~~al~~~i~~y~~~~~~~Kk~k~~~ 317 (803) T Consensus 238 e~k~~l-~~v~~f~ge~~~i~Ve~afQfnd~~~e~ilSF~N~vkT~eGG~HE~g~k~A~t~v~N~YaRK~~LLKEKDKNl 316 (655) T TIGR01058 238 EEKETL-SDVIYFEGEKNGIEVEVAFQFNDGDSENILSFANSVKTKEGGTHENGFKLAITKVINEYARKVNLLKEKDKNL 316 (655) T ss_pred CCCEEC-CCEEEEEECCCCEEEEEEEEECCCCCCEEEEEEEEEEECCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCC T ss_conf 550001-2345887647625899999742788753798640034068872078899999999865543200111001478 Q ss_pred CHHHHHCCCEEEEEEECCCC--CCCCCCHHHHCCCCCCHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH Q ss_conf 61343057215666521376--3357210020261111032111026899998740035799987789998877554553 Q gi|254780814|r 318 IGDDCREGFTSVLSIKMPDP--RFSSQTKEKLVSSEVRSVVESFVNDGLSAWLEEHPLEAKIIVKKVLDASMVRDAARRA 395 (803) Q Consensus 318 ~~~Diregl~~visvki~nP--~F~gQTK~kL~s~~v~~~v~~~v~~~l~~~l~~n~~~ak~i~~k~~~a~~ar~~a~ka 395 (803) T Consensus 317 eg~diReGL~avi~v~~PE~~~~fEGQTK~Klf~~ea~~~V~~~v~~~~~~fLeeN~~~A~~lv~kai~Ar~akeaak~a 396 (655) T TIGR01058 317 EGSDIREGLSAVISVRIPEELIQFEGQTKSKLFSPEAREVVDEIVEDKLSFFLEENKEDAKLLVKKAIKARDAKEAAKKA 396 (655) T ss_pred CCCHHHHHHHHEEEEECCHHHCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 71034532021155325754524576057667876689999999988889999743578999999998889999999874 Q ss_pred HHHCCC--CCCCCCCCCCCCCCCCCCCCCCCEEEEEEECCCCCCCCCCCCCCCCEEEEECCCCCCCHHHCC-HHHHHCCH Q ss_conf 211001--100124676676666555555521799982557543223346544302330056203344305-87663236 Q gi|254780814|r 396 RDLTRR--KGVLDIASLPGKLADCSERDPKKSELFLVEGDSAGGSAKQGRSRENQAILPLRGKILNVERAR-FDKMLSSQ 472 (803) Q Consensus 396 r~~~rr--K~~~~~~~lpgKL~Dc~~k~~~~~eL~ivEGDSAggsak~gRdr~~qai~PLrGKilNv~~a~-~~~i~~n~ 472 (803) T Consensus 397 Ree~k~~kk~kk~~g~l~GKLtPaqsk~p~~nELflVEGDSAGGsAK~GRdr~fQAiLPLRGKVlNv~Ka~n~~d~lkNE 476 (655) T TIGR01058 397 REEKKSGKKRKKEKGILSGKLTPAQSKNPAKNELFLVEGDSAGGSAKLGRDRKFQAILPLRGKVLNVEKAKNLADILKNE 476 (655) T ss_pred HHHHHCCCCCCHHCCCCCCCCCCCCCCCCHHHCEEEEECCCCCCCCCCCCCCCEEEECCCCCCEEHHHHHHHHHHHHCCC T ss_conf 56651356420111110111377677561110525785136887533367853034226675010377887688874030 Q ss_pred HHHHHHHHHCCCCCCCCCCCCCCCCCCEEEEECCCCCCCCHHHHHHHHHHHHHHHHHHCCEEEEECCCEEEEE--ECCC- Q ss_conf 6788887625787753321235673738998508888532899999999963077874895999438337887--2671- Q gi|254780814|r 473 EIGTLITALGTGIGQDSFDINKLRYHKIIIMTDADVDGAHIRTLLLTFFFRQMPSLIHNGFLYIIKPPLYGIT--RGKS- 549 (803) Q Consensus 473 Ei~~l~~~lG~~~g~~~~~~~~lrY~kiiimtDaD~DG~HI~~Llltff~~~~~~li~~g~~yia~ppl~~~~--~~K~- 549 (803) T Consensus 477 EI~t~i~~iG~Giga~-F~i~d~~Y~KIIIMTDADtDGaHIQ~LLLTfFYRyM~PLiE~G~vYiALPPLYKl~~k~~KkE 555 (655) T TIGR01058 477 EINTIIFCIGTGIGAD-FSIKDLKYDKIIIMTDADTDGAHIQVLLLTFFYRYMRPLIELGHVYIALPPLYKLSKKDGKKE 555 (655) T ss_pred HHHHHHHHHCCCCCCC-CCHHHCCCCCEEEEECCCCCCHHHHHHHHHHHHHHCCCHHHCCCEEEECCCCCCCCCCCCCEE T ss_conf 4889999816651256-436541678679963589883189999999887614522046833783687200227998547 Q ss_pred -EEEEECHHHHHHHHHHHCCCCHHCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCHHHHH Q ss_conf -7998145789899985001100001457765435468999999999999999864344579999988742113511235 Q gi|254780814|r 550 -LQYVKDEESLEDYLINQSLSEEIELFCDSKGVISKNDLRNFIDDALKIDKLIKDFYPNHDKTFIEQAVISGVFNCESDQ 628 (803) Q Consensus 550 -E~YikDD~EL~~~Ll~~gl~~~~l~~~~~~~~l~ge~L~~li~~~~~~~~~l~~l~~~~~~~lle~l~~~~~l~~~~d~ 628 (803) T Consensus 556 ~~~YaW~D~EL~~~~k~~G------------------------------------------------------------- 574 (655) T TIGR01058 556 IVKYAWSDLELEELKKKLG------------------------------------------------------------- 574 (655) T ss_pred EEEEECCCHHHHHHHHHHC------------------------------------------------------------- T ss_conf 8887127212899999737------------------------------------------------------------- Q ss_pred HHHHHHHHHHHHHHHHHHHHCCCCEECCCCCCCEEEEEEECCCCEEEEECHHHHCCCCHHHHHHHHHHHHHHCCCCEEEE Q ss_conf 77899999999887653100001100244567059999951853026646677416427899998888775114550276 Q gi|254780814|r 629 EINVSLASKLANRLNFIAEKSEKSWHGSINNSDILVKRIARGVQEQFVLEGSSIFSFGSKYKRIFSNRIEENYLTILSLI 708 (803) Q Consensus 629 ~~~~~~~~~l~~~l~~~~~~~~~~~~~~~~~~~i~~~~~~~Gv~~~~~l~~~~~~s~~~~~~~~~~~~l~~~~~~~~~l~ 708 (803) T Consensus 575 -------------------------------------------------------------------------------- 574 (655) T TIGR01058 575 -------------------------------------------------------------------------------- 574 (655) T ss_pred -------------------------------------------------------------------------------- T ss_conf -------------------------------------------------------------------------------- Q ss_pred ECCCEEEECCHHHHHHHHHHHHHCCCEEEECCCCCCCCHHHHHHCCCCHHHCEEEEEEHHHHHHHHHHHHHHCCCCCCCH Q ss_conf 55825873998999999998630676286037777889557223038961340212367988988878656418998762 Q gi|254780814|r 709 CNGDKIKITGPCSLLDTIFSIGRKGISMQRYKGLGEMNASQLWETTLNPDTRSLLRVKITDASQADDLFSRLMGDEVEPR 788 (803) Q Consensus 709 ~~~~~~~i~s~~el~~~i~~~gkKG~sIQRYKGLGEMNPeQLWETTMDP~tRtLLqV~IeDa~~Ad~iF~~LMGD~VEPR 788 (803) T Consensus 575 -----------------------kn~tlQRYKGLGEMNADQLweTTMnP~~R~Lv~v~i~D~~~aEr~in~lMG~kv~~R 631 (655) T TIGR01058 575 -----------------------KNYTLQRYKGLGEMNADQLWETTMNPETRTLVRVKIDDLARAERQINTLMGDKVELR 631 (655) T ss_pred -----------------------CCCEEEEECCCCCCCHHHHCCCCCCCCCCEEEEEEHHHHHHHCCEEEEEECCCCCHH T ss_conf -----------------------981677543776434023101468898641888726788621330333217873033 Q ss_pred HHHHHHHH Q ss_conf 89988524 Q gi|254780814|r 789 REFIQENS 796 (803) Q Consensus 789 ReFIe~NA 796 (803) T Consensus 632 k~WIe~Ni 639 (655) T TIGR01058 632 KKWIEANI 639 (655) T ss_pred HHHHHHHC T ss_conf 67465300

HHsearch alignment for GI: 254780814 and conserved domain: TIGR01058