Substrate	Reference(s)	Comment(s)
protocatechuic acid	MacLean, A. M., MacPherson, G., Aneja, P., & Finan, T. M. (2006). Characterization of the β-Ketoadipate Pathway inSinorhizobium meliloti. Applied and Environmental Microbiology, 72(8), 5403–5413. https://doi.org/10.1128/aem.00580-06	-