Condenses choline with CDP-diglyceride to produce phosphatidylcholine and CMP. Affects virulence of this bacterium when there is a complete loss of phosphatidylcholine formation due to absence of both the synthase (pcs) and the methylation (pmtA) pathways. Reduced virulence results from lowered yields of bacteria within host macrophages and because of loss of high multiplicity cytotoxicity. a CDP-1,2-diacyl-sn-glycerol + choline = a 1,2-diacyl-sn-glycero-3-phosphocholine + CMP + H(+) Belongs to the CDP-alcohol phosphatidyltransferase class-I family.