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Updated: Sep 24, 2025

Functional Complementation Analysis FCA: A Laboratory Exercise Designed and Implemented to Supplement the Teaching of Biochemical Pathways
Published on: June 24, 2016
Function of pathway specific regulators in the ACE1 and pyrichalasin H biosynthetic gene clusters
Verena Hantke1, Chongqing Wang1, Elizabeth J Skellam1
1Institute for Organic Chemistry and BMWZ, Leibniz Universität Hannover Schneiderberg 38 30167 Hannover Germany russell.cox@oci.uni-hannover.de.
Abstract:
Ectopic expression of BC1 which encodes a putative pathway specific transcription factor from the ACE1 biosynthetic gene cluster of the rice pathogen Pyricularia oryzae Guy11 did not lead to the production of ACE1-related compounds. However the known compound hinnulin A was formed. A putative partial gene cluster potentially involved in the biosynthesis of hinnulin A and DHN melanin was validated by RT-PCR and a possible biosynthetic pathway is proposed. Ectopic expression of pyiR which encodes a pathway specific transcription factor from the pyrichalasin H biosynthetic gene cluster in Magnaporthe grisea NI980 led to the apparent up-regulation of the pyi cluster and a 3-fold increase in pyrichalasin production under standard fermentation conditions, but did not lead to the formation of new compounds.
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