>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=99.75  E-value=1.4e-18  Score=116.39  Aligned_cols=54  Identities=31%  Similarity=0.660  Sum_probs=52.1

Q ss_pred             CCCCCCHHHHHHHHHHHHCCCHHHHHHHHCCCCHHHHHHHHHCCHHHHHHHHHH
Q ss_conf             216036389999999980899999999848888899999986399999999999
Q gi|254780490|r    2 STTAHTLRHSFATHLLSNGGDLRSIQSILGHSRLSTTQIYTNVNSKRMMEIYDQ   55 (67)
Q Consensus         2 ~~tpH~lRHt~at~l~~~G~~~~~vq~lLGH~~i~tT~~Y~~~~~~~~~~~~~~   55 (67)
T Consensus       103 ~~~~H~lRHt~At~l~~~G~~i~~v~~~lGH~s~~~T~~Y~hl~~~~l~~av~~  156 (158)
T cd00797         103 GQATHILRHTFASHFMMNGGNIATLQHILGHATIEMTMRYAHLAPDHLDDAVSL  156 (158)
T ss_pred             CCCCCHHHHHHHHHHHHCCCCHHHHHHHHCCCCHHHHHHCCCCCHHHHHHHHHH
T ss_conf             866227889999999984998999999848999999977748699999999985