PmrAB-regulated genes include pmrHFIJKL , whose product results in the addition of aminoarabinose to the 1 and 4 = phosphates of lipid-A ( D ) ; pmrC , whose product results in the addition of phosphoethanolamine to the 1 and 4 = phosphates of lipid-A ( E ) ; cptA , whose product results in the addition of phosphoethanolamine to the LPS core ( F ) ; pmrG , whose product results in the addition of phosphate to heptose present in the LPS core ( G ) ; and cld , whose product results in an O-antigen chain length determinant ( H ) .