locus-tag	class	description
PBI_CONSTANCE_34	IPR011010	DNA breaking-rejoining enzyme, catalytic core
PBI_CONSTANCE_34	IPR013762	Integrase-like, catalytic domain superfamily
PBI_CONSTANCE_34	IPR002104	Integrase, catalytic domain
PBI_CONSTANCE_34	IPR010998	Integrase/recombinase, N-terminal
PBI_CONSTANCE_34	IPR004107	Integrase, SAM-like, N-terminal
PBI_CONSTANCE_34	IPR023009	Tyrosine recombinase XerC/XerD