>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=99.95 E-value=6e-28 Score=200.23 Aligned_cols=145 Identities=14% Similarity=0.159 Sum_probs=121.5 Q ss_pred HHHHHHHHHHCCC--CHHHHHHHHHHHCCCCCCCCCCCCCCEEEEECCCCCCCCCHHHHHHCCHHHHHHHHHHHCCCCCC Q ss_conf 3445666640378--08999989898618873100256640144302332113310243311216899999642013322 Q gi|254780134|r 177 EDMQQFKSFWSEG--SQPRLAFEFLLYSGLRCSDSCRAGVQHLQNNIFSIKTQKTGTIITVELPDGFMKLLAMTPIGKET 254 (348) Q Consensus 177 ~ei~~~~~~~~~~--~~~~~~~~l~~~TG~R~~Ei~~L~~~did~~~i~~~~~Kt~~~~~vpl~~~l~~~l~~~~~~~~~ 254 (348) T Consensus 1 eE~~rLl~~~~~~~~~~~r~~~~l~~~TGlR~sEi~~L~~~di~~~~i~~~~~K~~~~r~ipl~~~~~~~l~~~~~~~~- 79 (158) T cd00797 1 DEEERLLAALDALGSGDLKDVAILCLDTGARWGEALGLKAEDIQEGRVTFWKTKSGKSRTVPISERVAAMLKRRRMRGG- 79 (158) T ss_pred CHHHHHHHHHHHCCCHHHHHHHHHHHHHCCCHHHHHHHHHHHCCCCEEEEEECCCCCEEEECCCHHHHHHHHHHHHCCC- T ss_conf 9899999873055786399999999994888888626279772688589887579975473341999999996154178- Q ss_pred CCCCCCCCCCCHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHCCCCHHHHHHHHCCCCHHHHHHHHHHHH Q ss_conf 1122245775877899999999998388998140269999999984899889999964999899999999998 Q gi|254780134|r 255 FFINNDKQKMNATQFSIWFKAKATKAGVNKSAHGVRKFSATISADAGATAHELMATYGWKTVDQAETYTKGAD 327 (348) Q Consensus 255 ~~~~~~g~~~~~~~~~~~~~~~~~~agi~~~~H~lRht~at~l~~~G~~~~~i~~~lGHss~~~t~~Y~~~~~ 327 (348) T Consensus 80 ~f~-----~~~~~~~~~~~~~~~~~~~~~~~~H~lRHt~At~l~~~G~~i~~v~~~lGH~s~~~T~~Y~hl~~ 147 (158) T cd00797 80 LFP-----DLYYESFRHIWKRAKIELPKGQATHILRHTFASHFMMNGGNIATLQHILGHATIEMTMRYAHLAP 147 (158) T ss_pred CCC-----CCCHHHHHHHHHHHHHCCCCCCCCCHHHHHHHHHHHHCCCCHHHHHHHHCCCCHHHHHHCCCCCH T ss_conf 888-----85478999999999824798866227889999999984998999999848999999977748699

HHsearch alignment for GI: 254780134 and conserved domain: cd00797