Proof that the ACTVI genetic region of Streptomyces coelicolor A3(2) is involved in stereospecific pyran ring formation in the biosynthesis of actinorhodin.
Pyran ring formation in the biosynthesis of actinorhodin in Streptomyces coelicolor A3(2) was studied using the act cluster deficient strain, CH999, carrying pRM5-based plasmids harbouring combinations of the actVI genes. The strain, CH999/pIJ5660 (pRM5 + actVI-ORF1), produced a chiral intermediate, (S)-DNPA, suggesting that the actVI-ORF1 product is a reductase determining the C-3 stereochemical centre.
Ichinose
K
K
Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan.
Surti
C
C
Taguchi
T
T
Malpartida
F
F
Booker-Milburn
K I
KI
Stephenson
G R
GR
Ebizuka
Y
Y
Hopwood
D A
DA
D000880:Anthraquinones / Q000737:chemistry / Q000378:metabolism; D005798:Genes, Bacterial; D005810:Multigene Family; D016366:Open Reading Frames; D011714:Pyrans / Q000737:chemistry*; D015183:Restriction Mapping; D013302:Streptomyces / Q000235:genetics*; D000095622:Benzoisochromanequinones
D000880:Anthraquinones; D011714:Pyrans; C013390:actinorhodin; D000095622:Benzoisochromanequinones