This family aligns the C-terminal region from several bacterial proteins of unknown function that may be involved in a theta-type replication mechanism [1,2,3].

1: Identification and characterization of a mobilization gene in the streptococcal plasmid, pVA380-1. LeBlanc DJ, Chen YY, Lee LN; Plasmid 1993;30:296-302. PMID:8302939

2: Sequencing and analysis of three plasmids from Lactobacillus casei TISTR1341 and development of plasmid-derived Escherichia coli-L. casei shuttle vectors. Panya M, Lulitanond V, Tangphatsornruang S, Namwat W, Wannasutta R, Suebwongsa N, Mayo B; Appl Microbiol Biotechnol. 2012;93:261-272. PMID:21822904

3: Nucleotide sequence and analysis of pRC12 and pRC18, two theta-replicating plasmids harbored by Lactobacillus curvatus CRL 705. Teran LC, Cuozzo SA, Aristimuno Ficoseco MC, Fadda S, Chaillou S, Champomier-Verges MC, Zagorec M, Hebert EM, Raya RR; PLoS One. 2020;15:e0230857. PMID:32240216