Immunolabeling of MecgoR, the Enzyme Catalyzing the Penultimate Step of Cocaine Biosynthesis (image) Max Planck Institute for Chemical Ecology Share Print E-Mail Caption This image shows immunolabeling (green areas) of MecgoR, the enzyme catalyzing the penultimate step of cocaine biosynthesis. The picture shows the strong accumulation of the enzyme in a cross section of a very young E. coca leaf, which is still curled around the growing stem tip. Bar: 0,1 mm. Credit Max Planck Institute for Chemical Ecology/ D'Auria, Jirschitzka Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.