ADP-heptose-lipopolysaccharide heptosyltransferase activity
adp-heptose-lipopolysaccharide heptosyltransferase activity
Catalysis of the reaction: heptosyl-KDO2-lipid A + ADP-L-glycero-beta-D-manno-heptose = heptosyl2-KDO2-lipid A + ADP + H+.