Table 1. A to-date overview of recombinant genes in pathogenic treponemes.

Gene #	Gene name	Definition	Recombination type	Reference
TP0117	tprC	Tpr protein C	Intra-strain	[7]
TP0131	tprD	Tpr protein D	Intra-strain	[7]
TP0133		hypothetical protein	Inter-strain	[16]
rDNA loci		tRNA spacer	Intra-strain	[12]
TP0316	tprG	Tpr protein G	Intra-strain	[7]
TP0326	tp92	BamA ortologue and rare outer membrane protein	Inter-strain	[9, 16, 36]
TP0488	mcp2	methyl-accepting chemotaxis protein	Inter-strain	[16, 36, This study]
TP0548		putative membrane protein	Inter-strain	This study
TP0577		putative membrane protein	Inter-strain	[16]
TP0620	tprI	Tpr protein I	Intra-strain	[7]
TP0621	tprJ	Tpr protein J	Intra-strain	[7]
TP0858		putative lipoprotein	Inter-strain	[16]
TP0897	tprK	Tpr protein K	Intra-strain	[10, 41, 42]
TP0968		hypothetical protein	Inter-strain	[16]
TP1031	tprL	Tpr protein L	Inter-strain	[16]