The N-terminal domain of the resolvase family (this family) contains the active site and the dimer interface. The extended arm at the C-terminus of this domain connects to the C-terminal helix-turn-helix domain of resolvase - see Pfam:PF02796.
This domain is usually found associated with Pfam:PF00239 in putative integrases/recombinases of mobile genetic elements of diverse bacteria and phages.
This short bacterial protein contains a zinc ribbon domain that is likely to be DNA-binding. This domain is found in site specific recombinase proteins. This family appears most closely related to Pfam:PF04606.