Main Reaction: Acetyl-CoA + oxaloacetic acid >> Citric acid

Reference: PubMed ID: 25229866
Authors: Kobayashi K, Hattori T, Hayashi R, Kirimura K
Title: Overexpression of the NADP+-specific isocitrate dehydrogenase gene (icdA) in citric acid-producing Aspergillus niger WU-2223L.
Published: 2014

Acetyl-CoA + oxaloacetic acid --> Citric acid