Sw. Elson et al., THE IDENTIFICATION OF 3 NEW BIOSYNTHETIC INTERMEDIATES AND ONE FURTHER BIOSYNTHETIC ENZYME IN THE CLAVULANIC ACID PATHWAY, Journal of the Chemical Society, Chemical Communications, (15), 1993, pp. 1212-1214
Labelling experiments are described that identify three new compounds,
N2-(2-carboxyethyl)arginine, 5-guanidino-(2-oxoazetidin-1-yl)pentanoi
c acid, and ydroxy-5-guanidino-2-(2-oxoazetidin-1-yl)pentanoic acid as
biosynthetic precursors of proclavaminic acid and hence clavulanic ac
id in Streptomyces clavuligerus ATCC 27064 and a new amidino hydrolase
, which hydrolyses ydroxy-5-guanidino-2-(2-oxoazetidin-1-yl)pentanoic
acid to proclavaminic acid has been characterised.