Download presentation
Presentation is loading. Please wait.
1
Volume 16, Issue 10, Pages 1109-1121 (October 2009)
Biosynthesis of Macrolactam BE Involves Two Distinct PKS Systems and Amino Acid Processing Enzymes for Generation of the Aminoacyl Starter Unit Hanne Jørgensen, Kristin F. Degnes, Håvard Sletta, Espen Fjærvik, Alexander Dikiy, Lars Herfindal, Per Bruheim, Geir Klinkenberg, Harald Bredholt, Gyrid Nygård, Stein O. Døskeland, Trond E. Ellingsen, Sergey B. Zotchev Chemistry & Biology Volume 16, Issue 10, Pages (October 2009) DOI: /j.chembiol Copyright © 2009 Elsevier Ltd Terms and Conditions
2
Figure 1 Structures of BE-14106 and Similar Small-Ring Macrolactams
Chemistry & Biology , DOI: ( /j.chembiol ) Copyright © 2009 Elsevier Ltd Terms and Conditions
3
Figure 2 Organization of the BE Biosynthetic Gene Cluster in Streptomyces sp. DSM 21069 PKS, green; genes presumed to be involved in modification of aminoacyl starter, red; regulators/efflux pump, blue; post-PKS modification, yellow; not involved in biosynthesis of BE-14106, gray. Coverage of the four sequenced cosmids is shown. Chemistry & Biology , DOI: ( /j.chembiol ) Copyright © 2009 Elsevier Ltd Terms and Conditions
4
Figure 3 Incorporation of Nitrogen and Carbon Atoms from Unlabeled Glycine into the BE Molecule in the Feeding Experiments Experiments were performed using the Silantes growth media supplemented with ammonium sulfate (A) or sodium nitrate (B). Chemistry & Biology , DOI: ( /j.chembiol ) Copyright © 2009 Elsevier Ltd Terms and Conditions
5
Figure 4 Proposed Model for the Biosynthesis of BE-14106
(A) Synthesis and activation of the acyl amino acid starter. (B) Extension of the aminoacyl starter, cyclization, and C-8 hydroxylation. Malonyl-CoA-specific AT domains are shown in orange and methylmalonyl-CoA-specific AT domains are shown in blue. Chemistry & Biology , DOI: ( /j.chembiol ) Copyright © 2009 Elsevier Ltd Terms and Conditions
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.