Gh. Dunstan et al., The Vancomycin biosynthetic pathway is induced in oxygen-limited Amycolatopsis orientalis (ATCC 19795) cultures that do not produce antibiotic, ENZYME MICR, 27(7), 2000, pp. 502-510
Vancomycin biosynthetic capacity was stimulated in oxygen-limited bioreacto
r culture (6.4% DOT) of Amycolatopsis orientalis, coinciding with a down-re
gulation of the culture growth and protein synthesis rates. However no Vanc
omycin was detected. ATP production was similar in oxygen-limited and oxyge
n-sufficient cultures (400-150 mu mole(ATP). g(biomass)(-1)). Our findings
suggest a critical requirement for oxygen flux through the Vancomycin biosy
nthetic pathway, which is only met under nutrient-limited conditions in whi
ch oxygen is in excess. (C) 2000 Elsevier Science Inc. All rights reserved.