Unkles, S. E., Rouch, D. A., Wang, Y., Siddiqi, M. Y., Glass, A. D. M., & Kinghorn, J. R. (2004). Two perfectly conserved arginine residues are required for substrate binding in a high-affinity nitrate transporter. National Academy of Sciences.

Unkles, Shiela E., Duncan A. Rouch, Ye Wang, M. Yaeesh Siddiqi, Anthony D. M. Glass, và James R. Kinghorn. Two Perfectly Conserved Arginine Residues Are Required for Substrate Binding in a High-affinity Nitrate Transporter. National Academy of Sciences, 2004.

Unkles, Shiela E., et al. Two Perfectly Conserved Arginine Residues Are Required for Substrate Binding in a High-affinity Nitrate Transporter. National Academy of Sciences, 2004.