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TolA C-terminal This family consists of several bacterial TolA proteins as well as two eukaryotic proteins of unknown function. Tol proteins are involved in the translocation of group A colicins. Colicins are bacterial protein toxins, which are active against Escherichia coli and other related species (See pfam01024). TolA is anchored to the cytoplasmic membrane by a single membrane spanning segment near the N-terminus, leaving most of the protein exposed to the periplasm.
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Lu S et al.(2020). "CDD/SPARCLE: the conserved domain database in 2020.",