Transporter	Reference
Pp_pcaKp	Nichols, N. N., & Harwood, C. S. (1997). PcaK, a high-affinity permease for the aromatic compounds 4-hydroxybenzoate and protocatechuate from Pseudomonas putida. Journal of Bacteriology, 179(16), 5056–5061. https://doi.org/10.1128/jb.179.16.5056-5061.1997