This family consists of several prokaryotic TelA like proteins. TelA and KlA are associated with tellurite resistance [1] and plasmid fertility inhibition [2].

1: Identification and molecular genetic analysis of multiple loci contributing to high-level tellurite resistance in Rhodobacter sphaeroides 2.4.1. O'Gara JP, Gomelsky M, Kaplan S; Appl Environ Microbiol 1997;63:4713-4720. PMID:9406390

2: Phage inhibition, colicin resistance, and tellurite resistance are encoded by a single cluster of genes on the IncHI2 plasmid R478. Whelan KF, Colleran E, Taylor DE; J Bacteriol 1995;177:5016-5027. PMID:7665479