Yildiz, O., Kalthoff, C., Raunser, S., Kuhlbrandt, W., (2007) Structure of GlnK1 with bound effectors indicates regulatory mechanism for ammonia uptake. The EMBO Journal. 26, 589-599. [Abstract]

Saparov, S.M., Liu, K., Agre, P., Pohl, P., (2007) Fast and Selective Ammonia Transport by Aquaporin-8*. The Journal of Biological Chemistry. Vol. 282, NO. 8, pp.5296-5301. [Abstract]

Khademi, S., O’Connell, III. J., Robles-Colmenares, Y., Miercke, L.J., Stroud, R.M., (2004) Mechanism of ammonia transport by Amt/MEP/Rh: structure of AmtB at 1.35 A. Science. 305: 1587-1594. [Abstract]

Kamberov, E.S., Atkinson, M.R., Ninfa, A.J., (1995) The Escherichia coli PII signal transuction protein is activated upon binding 2-ketoglutarate and ATP.  The Journal of Biological Chemistry. 270: 17797-17807. [Abstract]

Van Heeswijk, W.C., Hoving, S., Molenaar, D., Stegeman, B., Kahn, D., Westerhoff, H.V., (1996)  An alternative PII protein in the regulation of glutamine synthetase in Escherichia coli.  Molecular Microbiology 21: 133-146.  [Abstract]

Nelson D., Cox M. Lehninger The Principles of Biochemistry W. H. Freeman Publishing, 4th Edition (2004)

Ingram, Wendy, (2007) Plant PII Protein Structure: Insights into Eukaryotic Nitrogen Metabolism.  Biochemistry 462b Honors. http://www.biochem.arizona.edu/classes/bioc462/462bh2008/462bhonorsprojects/462bhonors2007/wingram/