>cd00797 HP1_INT_C Phage HP1 integrase, C-terminal catalytic domain. Bacteriophage HP1 and related integrases are found in eubacteria, plasmids and temperate bacteriophages of the P2 family. They belong to the DNA breaking-rejoining enzyme superfamily, which includes tyrosine recombinases and type IB topoisomerases. These enzymes share the same fold in their C-terminal catalytic domain containing six conserved active site residues and the overall reaction mechanism. The HP1 recombinase controls phage replication by site-specific recombination between the HP1 genome and the chromosomal DNA. It is a heterobifunctional DNA-binding protein, which recognizes two different DNA sequence motifs (type I and type II binding sites). The C-terminal catalytic domain of the HP1 integrase binds to the type I site, while the less conserved N-terminal domain is largely responsible for binding to the type II site.

Probab=99.97 E-value=4.1e-32 Score=219.94 Aligned_cols=154 Identities=27% Similarity=0.398 Sum_probs=120.4 Q ss_pred CHHHHHHHHHHHCCCCCCCHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCEEE-CCCCCCCCCCCCCCCCHHHH Q ss_conf 01567877653101356775775320122210011233222221122222332322033-23785310001122100234 Q gi|254780882|r 132 KQALTLVDNVLLHTSHETKWIDARNSAILYLLYGCGLRISEALSLTPQNIMDDQSTLRI-QGKGDKIRIVPLLPSVRKAI 210 (328) Q Consensus 132 ~e~~~ll~~~~~~~~~~~~~~~~Rd~~i~~ll~~TGlR~~El~~L~~~did~~~~~i~v-~gKg~K~R~Vpi~~~~~~~l 210 (328) T Consensus 1 eE~~rLl~~~~~~~-----~~~~r~~~~--l~~~TGlR~sEi~~L~~~di~--~~~i~~~~~K~~~~r~ipl~~~~~~~l 71 (158) T cd00797 1 DEEERLLAALDALG-----SGDLKDVAI--LCLDTGARWGEALGLKAEDIQ--EGRVTFWKTKSGKSRTVPISERVAAML 71 (158) T ss_pred CHHHHHHHHHHHCC-----CHHHHHHHH--HHHHHCCCHHHHHHHHHHHCC--CCEEEEEECCCCCEEEECCCHHHHHHH T ss_conf 98999998730557-----863999999--999948888886262797726--885898875799754733419999999 Q ss_pred HHHHHHHCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHCCCCCCCCCCCCHHHHHHHHHHCCCCHHHHHHHHCCC Q ss_conf 32211100123446655432111122111000123567899976869998805417999999998489988999983788 Q gi|254780882|r 211 LEYYDLCPFDLNLNIQLPLFRGIRGKPLNPGVFQRYIRQLRRYLGLPLSTTAHTLRHSFATHLLSNGGDLRSIQSILGHF 290 (328) Q Consensus 211 ~~yl~~~~~~~~~~~~~~lF~~~~g~~ls~~~i~~~~~~~~~~~gi~~~~spH~lRHtfAt~ll~~G~~~~~v~~~lGH~ 290 (328) T Consensus 72 ~~~~----------~~~~~f~~~~-----~~~~~~~~~~~~~~--~~~~~~~H~lRHt~At~l~~~G~~i~~v~~~lGH~ 134 (158) T cd00797 72 KRRR----------MRGGLFPDLY-----YESFRHIWKRAKIE--LPKGQATHILRHTFASHFMMNGGNIATLQHILGHA 134 (158) T ss_pred HHHH----------HCCCCCCCCC-----HHHHHHHHHHHHHC--CCCCCCCCHHHHHHHHHHHHCCCCHHHHHHHHCCC T ss_conf 9615----------4178888854-----78999999999824--79886622788999999998499899999984899 Q ss_pred CHHHHHHHHHHCHHHHHHHHH Q ss_conf 878979999619899999999 Q gi|254780882|r 291 RLSTTQIYTNVNSKNGGDWMM 311 (328) Q Consensus 291 s~~tT~~Y~h~~~~~~~~~l~ 311 (328) T Consensus 135 s~~~T~~Y~hl~~~~l~~av~ 155 (158) T cd00797 135 TIEMTMRYAHLAPDHLDDAVS 155 (158) T ss_pred CHHHHHHCCCCCHHHHHHHHH T ss_conf 999997774869999999998

HHsearch alignment for GI: 254780882 and conserved domain: cd00797