>TIGR02225 recomb_XerD tyrosine recombinase XerD; InterPro: IPR011932 Proteins in this entry are part of the wider so-called "phage" integrase fmaily which describes a number of recombinases with tyrosine active sites that transiently bind covalently to DNA. Many are associated with mobile DNA elements, including phage, transposons, and phase variation loci. This entry represents the chromosomally-encoded polypeptide XerD, which is closely related to, and interacts with, another chromosomally-encoded polypeptide, XerC (IPR011931 from INTERPRO). These proteins are site-specific tyrosine recombinases, which act by catalyzing the cutting and rejoining of the recombining DNA molecules . They form a cyclic heterotetrameric complex composed of two molecules of XerC and two molecules of XerD. The XerC-XerD complex is essential to convert dimers of the bacterial chromosome into monomers to permit their segregation at cell division. It also contributes to the segregational stability of plasmids. XerD is composed of two domains, an N-terminal alpha-helical domain, and a C-terminal domain composed mostly of alpha helices, with a three-stranded antiprallel beta sheet along one edge . The active site is found at the extreme C-terminal end of the polypeptide. Most of the C-terminal domain is structurally homologous to that of other "phage" integrases, but the active site regions of these enzymes are stucturally distinct.; GO: 0003677 DNA binding, 0006310 DNA recombination, 0007049 cell cycle, 0007059 chromosome segregation, 0015074 DNA integration, 0051301 cell division.

Probab=100.00 E-value=0 Score=544.28 Aligned_cols=288 Identities=43% Similarity=0.650 Sum_probs=267.4 Q ss_pred CCHHHHHCCHHHHHHHHHHHHHHHHHHH--HCCCCHHHCCHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHCCCCC Q ss_conf 9646641389999999999999999975--44998688999999999999997799843532210112334321000122 Q gi|255764498|r 1 MMSSERASSINTLSAYKRDLKEMQNFLN--NKEISLSAASTNHLISYLNHLSQRKLVTSSQRRKISVIRQFYNFLCYEGL 78 (300) Q Consensus 1 ~l~~~R~~S~~T~~~Y~~~l~~f~~~~~--~~~~~~~~i~~~~i~~~~~~l~~~~~s~~T~~~~~~~l~~~~~~~~~~~~ 78 (300) T Consensus 6 ~L~~E~GLs~NT~~aYrrDL~~f~~~L~~~~~g-~~~~~~~~~i~~fl~~l~~~g~~~~S~AR~lsalR~Fy~fL~~e~~ 84 (305) T TIGR02225 6 YLWVERGLSQNTLEAYRRDLEKFLEYLEESERG-DLAEVDRGDIEDFLAELKEAGLSARSIARALSALRSFYRFLLREGL 84 (305) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCC-CHHHCCHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHCCC T ss_conf 999986353888999999999999986222478-7641687899999999986687700288999999999999986887 Q ss_pred CCCCCCCC-CCCCCCCCCCCCCCCCHHHHHHHHHH-HHHCCCCCCHHHHHHHHHHCCCHHHHHCCCCCCCCCCCHHHHHH Q ss_conf 22221222-21212221112233202469999864-32001256102776543110001221001343334320000011 Q gi|255764498|r 79 RKDNPSDT-LELPKKNHILPKTLHKDTIANLLEQA-KIEAENPAPGQWKRVRIFLLIELLYATGMRVSELVTLSAHTLNL 156 (300) Q Consensus 79 ~~~np~~~-i~~~k~~~~~~~~ls~~e~~~ll~~~-~~~~~~~~~~~~~~~R~~~il~ll~~tGlR~~Ei~~L~~~di~~ 156 (300) T Consensus 85 ~~~dP~~~~~~~PK~~~~LP~vLt~~EV~~LL~~p~~~~~~~-g~kr~-~lRDrAmLElLYATGlRVSELv~L~~~d~~l 162 (305) T TIGR02225 85 REDDPSALRIETPKVARKLPKVLTVEEVEALLAAPIDVDTPL-GGKRP-ALRDRAMLELLYATGLRVSELVGLRLEDVNL 162 (305) T ss_pred CCCCCHHHHHHCCCCCCCCCCCCCHHHHHHHHHHHCCCCCCC-CCCCH-HHHHHHHHHHHHHCCCCEEEEECCCHHHHHC T ss_conf 455733664203422457888379899999985002467767-67640-1654799999986488355330561665200 Q ss_pred HHHC-CC-CCCCCCCCCCCHHHHHHHHHHHHHHHHHCCCCCC---CCCCC---CCCCCCCCCCCCCCCCCCCHHHHHHHC Q ss_conf 1100-01-1122211111000012478875323210012467---77520---012333222221111111012344201 Q gi|255764498|r 157 TERT-MI-IQGKGNKERLVILSPSALHALQMYKKTCSSMKMT---GNDLW---LFPSSTKTGHLSRQVFARDLKALAARA 228 (300) Q Consensus 157 ~~~~-i~-v~~K~~k~R~ipi~~~~~~~l~~y~~~~~~~~~~---~~~~~---lf~~~~~~~~~s~~~~~~~~~~~~~~~ 228 (300) T Consensus 163 ~~g~~~~~v~GKG~KERlVP~G~~A~~~l~~Yl~~~R~~~~~~~~~~~d~~~~LFln~~~G~~lsRQ~~W~~~K~~A~~a 242 (305) T TIGR02225 163 DEGVKVRKVRGKGSKERLVPLGEEAIEALERYLKEARPLLLKKKKKSSDAKSALFLNRREGGPLSRQGFWKILKEYAKRA 242 (305) T ss_pred CCCEEEEEEEECCCCEEECCCHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHC T ss_conf 27737999861688412022028999999999987406764177888755431124688888878899999999999981 Q ss_pred CCCCCCCCHHHHHHHHHHHHHHCCCCHHHHHHHHCCCCHHHHHHHHHCCHHHHHHHHHHHCCHH Q ss_conf 4667642598858899999998588888999985589989989996459999999999828011 Q gi|255764498|r 229 GIQKKNISPHIIRHAFASHLLEGGADLRTIQILLGHTDISTTQIYTHLLPDKLQKLVQDYHPLA 292 (300) Q Consensus 229 gi~~~~~t~H~lRht~at~l~~~G~~~~~v~~~lGH~s~~tT~~Y~~~~~~~~~~~~~~~~p~~ 292 (300) T Consensus 243 GI~k~-isPHtLRHSFATHLLenGADLR~VQeLLGHadisTTQIYTHV~~~~L~~~~~~~HPRa 305 (305) T TIGR02225 243 GIEKP-ISPHTLRHSFATHLLENGADLRVVQELLGHADISTTQIYTHVARERLKEVHKKHHPRA 305 (305) T ss_pred CCCCC-CCCCCCHHHHHHHHHHCCCCHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHCCCC T ss_conf 88989-9975104679999873688276887774322147889999987999999999628899

HHsearch alignment for GI: 255764498 and conserved domain: TIGR02225