Construction of high-copy-number yeast-E. coli shuttle plasmids pLNH31, pLNH32, pLNH33, and pLNH34. containing the XYL three-gene cassette KK-AR (or A*R)-KD. The XhoI DNA fragment containing KK-AR (or A*R)-KD was inserted into pUCKm10 at its SalI site.