Many microbes produce the highly active compound hydroxy-DMAPP (HMB-PP) and corresponding mononucleotide conjugates, in addition to IPP and DMAPP.
Mnogi mikrobi proizvode veoma aktivno jedinjeje hidroksi-DMAPP (HMB-PP) i odgovarajuće mononukleotidne konjugate, pored IPP i DMAPP.