>TIGR01062 parC_Gneg DNA topoisomerase IV, A subunit; InterPro: IPR005742 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 A (parC) of topoisomerase IV from Gram negative 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, 0006268 DNA unwinding during replication, 0005694 chromosome.

Probab=100.00 E-value=0 Score=1661.97 Aligned_cols=733 Identities=41% Similarity=0.737 Sum_probs=703.8 Q ss_pred EEECCHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHCCCCCCCCEEEEEHHHHHHHCCCCCCHHHHHHH Q ss_conf 66531999999888888899985104764112897046899999998689998980354053666542768874789999 Q gi|254780353|r 17 VKAVSLRFALEERYLAYALSTIKERAIPDLRDGFKPVHRRIIHAMSEMGLDFGAAFKKSARIVGEVIGKLHPHGDQSVYD 96 (753) Q Consensus 17 i~~~~i~~~~~~~y~~ya~~vi~~Ralpd~~DGlKpvqRril~~m~~~~~~~~~~~~K~ar~vg~v~gkyhPHGd~s~y~ 96 (753) T Consensus 1 iE~~~l~~~~~~~YL~Y~~~~IM~RaLP~i~DGLKPV~RR~~YAM~~L~L~a~a~yKKsAR~VGDVlGKyHPHGD~A~Y~ 80 (747) T TIGR01062 1 IENLDLRNFTEEAYLNYSLYVIMDRALPFIGDGLKPVQRRIVYAMSELGLNANAKYKKSARTVGDVLGKYHPHGDSAVYE 80 (747) T ss_pred CCCCCHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHHHHCCCCCCCCCEECCEECCCCCCCCCCCCHHHHH T ss_conf 97651578988888888888887423772025775146899888887164767775200102102124605896248999 Q ss_pred HHHHHCCHHHCCCCCCCCCCCCCCCCC-CCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCEEEEEEECCCCCHH Q ss_conf 999610013216613267887088677-9710024689985599999984218786175216799632422312345267 Q gi|254780353|r 97 SLVRLAQPFVQRYPLISGQGNFGNIDG-DSAAAYRYTEARMTQVAELILQGVDEDAVDFRDTYNEEDSEPVVFPSKFPNL 175 (753) Q Consensus 97 a~v~maq~~~~~~pli~g~GnfGs~~~-d~~Aa~RYte~rl~~~~~~ll~di~~~~v~~~~n~D~~~~EP~~lp~~~P~l 175 (753) T Consensus 81 ~~V~~AQ~FS~RYPLvDGQGN~Ga~DdP~~~AAMRYTESRl~~~s~lLl~~l~~~TvD~~~~fD~~~~EP~~lPA~lP~~ 160 (747) T TIGR01062 81 ALVLLAQPFSYRYPLVDGQGNWGAPDDPKSFAAMRYTESRLSKISELLLEELGQGTVDFRPNFDGTLLEPKILPARLPNI 160 (747) T ss_pred HHHHHHCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCHHH T ss_conf 99986211123476201677868898742123433246678999999998618872133457887424644253112055 Q ss_pred HHCCCCCHHHHHHHHCCCCCHHHHHHHHHHHHHCCCCCCHHHHHHCCCCCCCCCCCCCCCHHHHHHHHHCCCCEEEEEEE Q ss_conf 64266504677775167778899999999987286532013443203677887760106988999898503341599999 Q gi|254780353|r 176 LANGTSGIAVGMATSIPSHNVQEICEAALALIDNPEISIEKLLEYIIGPDFPTGGIIVESRESIVESYRLGRGGFRVRAR 255 (753) Q Consensus 176 L~Ng~~GIavG~at~ipphnl~ev~~a~~~~i~~~~~~~~~l~~~i~gPDFPTGG~i~~~~~~i~~~y~tG~G~i~~r~k 255 (753) T Consensus 161 L~NG~~GIAVGMAT~IPPHNl~E~adA~~~LiD~P~agl~d~l~~v~GPDfPT~a~II~~~~~I~~~Y~~GRGS~r~Ra~ 240 (747) T TIGR01062 161 LLNGTTGIAVGMATDIPPHNLRELADAALYLIDNPKAGLDDILNIVQGPDFPTEAEIIDKKEEIRKIYETGRGSVRMRAR 240 (747) T ss_pred HCCCCCCEEEECCCCCCCCCHHHHHHHHHHHHCCCCCCHHHHHHHHCCCCCCCCCEEECCHHHHHHHHHCCCCEEEEEEE T ss_conf 60688724752217888623799999999985288321689999734857898765747189999998569833897226 Q ss_pred EEEEECCCCCEEEEEECCCCCCCHHHHHHHHHHHHHHCCCHHHHHHHHCCCCC--EEEEEEEECCCCCHHHHHHHHHHHC Q ss_conf 99864378840799952420021689999999986402221345776406766--0588985045458899999875420 Q gi|254780353|r 256 WCVEEVGRGSWCIVVTEIPYQVQKSRLIEKIAELIIAKRIPLLEDIRDESAED--VRIVLFPKNRSLDPDLLMESIFMLS 333 (753) Q Consensus 256 ~~~e~~~~~~~~ivIteiPy~v~k~~~ie~I~~lv~~~ki~gi~dirDeSd~~--~~~vi~~~~r~~~~~~vl~~Lyk~T 333 (753) T Consensus 241 W~KE~~syGty~ivi~~lP~Q~~~sk~i~QIA~~~~~KKlP~~~~iRDEsDH~~~iR~Vi~PR~~~~D~~~vM~~LF~~T 320 (747) T TIGR01062 241 WKKEDGSYGTYQIVISALPHQISKSKVIEQIAIQLKDKKLPLISDIRDESDHENPIRVVIVPRSNRVDPDIVMEHLFATT 320 (747) T ss_pred EEECCCCCCCEEEEEECCCCCCCCHHHHHHHHHHHHHCCCCCHHHCCCCCCCCCCEEEEEECCCCCCCHHHHHHHHHHHH T ss_conf 53014666502676522775354015889999999717887024203423677856899843887768799999986542 Q ss_pred CCCCCCCCCEEEEECCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCC Q ss_conf 00012233113331268972204999999899998999999999999999999999999998641078999975200001 Q gi|254780353|r 334 DMETRFPLNMNVLSMGRVPQVMPLDGILKEWLAHRREVLFRRSSFRMQAIDRRVEILKGLLIAYLNIDEIIAIIRNEDKP 413 (753) Q Consensus 334 ~Lq~sf~~N~~~l~~~~~P~~~~l~eil~~f~~~R~~vi~rr~~~~L~k~~~RlhIleGl~~a~~~ID~vI~iIR~s~~~ 413 (753) T Consensus 321 ~LE~~~~~N~N~IG~~~~P~V~nlLEIL~E~L~fR~~~v~RR~~Y~L~Kv~~RL~IL~~L~i~fLN~DEvIEIIR~EDeP 400 (747) T TIGR01062 321 DLEKSYRLNMNMIGLDNKPAVKNLLEILQEWLVFRRNTVIRRLTYRLNKVLKRLHILEGLLIAFLNIDEVIEIIREEDEP 400 (747) T ss_pred CHHHHEEEEEEEECCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCEEEEECCCCCC T ss_conf 20011233224640698960454899999999855888787888779999989988764755202100101222379984 Q ss_pred CCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHCCCCCCCC Q ss_conf 10000002577577889988789999889999766678999988776544203978878999999999987417743345 Q gi|254780353|r 414 KPVMVSRFSLTENQVDAILNLRLRSLRKLEEYQIKSELDNLLAEKEKIDSLLNSGKQQWNQIACEIREVKEIFSKSTDLG 493 (753) Q Consensus 414 k~~L~~~f~lse~QA~aIL~mrL~rLt~le~~kl~~E~~eL~~~i~~L~~IL~s~~~l~~iI~~EL~eikkkfgd~~~~~ 493 (753) T Consensus 401 K~~lM~RF~ls~~Q~e~IL~~rLR~L~KLEE~~i~~E~~~L~K~~~~L~~IL~~~~~l~~l~KKEi~~~~~~yg~ntiiG 480 (747) T TIGR01062 401 KTILMERFKLSEIQAEAILNLRLRHLAKLEEHKIKDEQSELEKERAILEKILKSERKLNQLVKKEIQADAKKYGLNTIIG 480 (747) T ss_pred HHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCEEC T ss_conf 28998550635899999986555565457788887656677899999999987568999999899999998740242203 Q ss_pred CCCCCEEECCCHHHHHHHHCCCCCCCCEEEEECCCEEECCCCCCCCCCCCCCCCCCCCEEEEEECCCCCEEEEECCCEEE Q ss_conf 55420000110000001100245667059987101020256554455322345555540121111478178980688278 Q gi|254780353|r 494 RRRTTFCEVSRADKATLQQAMIEKEPITVVISNRGWIRSLKSHSVDLSALHFKEGDSLKIALHAHTTDRILLLSTDGKAY 573 (753) Q Consensus 494 ~RRT~iie~~~~~~~~~~EdlI~~E~v~V~LS~~GyIKr~k~~~~~~~~~~~KegD~l~~~~~~~t~d~LLffTs~GkvY 573 (753) T Consensus 481 ~R~~~l~E~~~~~~~~~~t~~~~~EPvTii~S~MGWVRs~KGH~~D~~~l~YK~GD~~~~~~~~~~~~~v~~i~S~GR~y 560 (747) T TIGR01062 481 ARRSSLEEREEAKQVSEITDMIPKEPVTIILSKMGWVRSAKGHDIDLSTLKYKAGDSEKAIIEGKSNQKVVFIDSTGRSY 560 (747) T ss_pred CCCCCHHHHHHHHHHHHHHHHCCCCCEEEEECCCCCEEECCCCCCCCCCCCCCCCCCEEEEEEECCCCEEEEEECCCCEE T ss_conf 55451356788888876653036788179982777355046656671435413686123345512775179997288526 Q ss_pred EEEHHHCCCCCCCCCCCCCCCCCCCC-CEEEEEEEECCCCEEEEEECCCCEEEEEHHHHHCCCCCCEEEEEECCCCCEEE Q ss_conf 75511212123444422223576765-30789998579985999974897899638874023335627885368980568 Q gi|254780353|r 574 TLPAGNLLSGRGHGEAIQLLIDLNHN-QDIVTAFVYDSTCKLLVVSSKGNAFIVEESEIIANTRKGKTFLKVSSEEKMKL 652 (753) Q Consensus 574 ~l~a~~Ips~~~kG~pI~~ll~l~~~-EkIv~~~~~~~~~~lll~Tk~G~ikr~~l~~~~~~~k~Gk~~ikLk~~D~li~ 652 (753) T Consensus 561 ~l~~~~l~~a~g~G~Pl~~KL~l~~Gn~~i~~~l~~~~~Q~LL~AS~~G~GF~~~~~~liA~~k~GK~l~~lPE~~~~~~ 640 (747) T TIGR01062 561 ALDPLNLPSARGQGEPLTGKLLLPIGNATIENILMESENQKLLLASDAGYGFLVKFNDLIARNKAGKALINLPENASVLA 640 (747) T ss_pred EECCCCCCCCCCCCCCEEEEEECCCCCCCEEEEEEECCCCCEEEECCCCCCEEEECHHHHHHCHHCHHHCCCCCCCEEEC T ss_conf 63112043456778722688732688623107776358853210001686247400433331100402001788861104 Q ss_pred EEECCCCE--EEEEECCCCEEEEEHHHCCCCCHHHCCEEEECCC-------CCEEEEEEEECCCCCEEEEECCCCCCCCC Q ss_conf 89618980--9999569938995578778336121413342187-------87568999733888369994177566451 Q gi|254780353|r 653 VVKVTGDH--VAVVGENRKLLIFSIDQIPEMSRGKGVRLQSYKD-------GGISDVICFKICEGLTWIDSAGRSYNRSE 723 (753) Q Consensus 653 v~~~~~d~--iiliT~~Gk~LrF~~~eIr~~gRgkGVk~i~Lkd-------~~~~~~~~~~~~e~~~il~~t~~g~~k~~ 723 (753) T Consensus 641 p~~~~~~s~~~~aI~~a~R~L~F~~~~lP~l~KG~G~~~~~~~~a~A~~~~~~L~~l~~~~~Q~~L~~~-~Gk~KI~L~~ 719 (747) T TIGR01062 641 PLVVNDDSDLIVAITEAGRLLVFPIDDLPELSKGKGNKLIRIPAANAKDREELLLDLKILNKQDGLSFN-DGKRKIKLKP 719 (747) T ss_pred CEEECCCCCEEEEECCCCEEEEECHHHCCCCCCCCCCEEEEECCHHHCCCCCCCEEEEEECCCCCEEEC-CCCEEEEECH T ss_conf 434237610244411367068742111776347873057750541001200010123453577732420-4822452357 Q ss_pred HHHHCCCCCCCCCCCCCCCCCCCCCCE Q ss_conf 143225444136660275526776861 Q gi|254780353|r 724 NDLLGWLGKRGGVGSLVPKGFPRSGKF 750 (753) Q Consensus 724 ~~~~~~~~~RggkG~~~~k~~~K~gkl 750 (753) T Consensus 720 ~~l~~~~g~RG~~G~~~~~Gl~~~~~~ 746 (747) T TIGR01062 720 EELQKFLGERGRKGTTLPRGLPKNNRV 746 (747) T ss_pred HHHHHHHHCCCCCCCCCCCCCCHHHCC T ss_conf 767755304688788675454411015

HHsearch alignment for GI: 254780353 and conserved domain: TIGR01062