O-acyltransferase that catalyzes D-alanylation of both teichoic acid and lipoteichoic acid (LTA) (PubMed:30283133). D-alanylation of LTA plays an important role in modulating the properties of the cell wall in Gram-positive bacteria, influencing the net charge of the cell wall (PubMed:7797557). Catalyzes D-alanylation from DltC carrier protein (PubMed:30283133). Cell wall biogenesis; lipoteichoic acid biosynthesis. Consists of a ring of transmembrane domains, which shield a highly conserved extracellular structural funnel extending into the middle of the lipid bilayer. The conserved catalytic His residue is located at the bottom of this funnel and is connected to the intracellular DltC through a narrow tunnel. Belongs to the membrane-bound acyltransferase family.