1. Dali server: conservation mapping in 3D. Holm, Liisa, Rosenström, Päivi. Nucleic Acids Research. 38(suppl 2): W545-W549. 2010.
2. Dictionary of protein secondary structure: pattern recognition of hydrogen-bonded and geometrical features. Kabsch, W., Sander, C. Biopolymers. 22(12): 2577-2637. 1983.
3. Moco Mojo: Crystal Structure Reveals Essential Features of Eukaryotic Assimilatory Nitrate Reduction. Eckardt, N. A. The Plant Cell. 17(4): 1029-1031. 2005.
4. Molybdenum-cofactor-containing enzymes: structure and mechanism. Kisker, C., Schindelin, H., Rees, D. C. Annual Review of Biochemistry. 66: 233-267. 1997.
5. NITRATE REDUCTASE STRUCTURE, FUNCTION AND REGULATION: Bridging the Gap between Biochemistry and Physiology. Campbell, W. H. Annual Review of Plant Physiology and Plant Molecular Biology. 50: 277-303. 1999.
6. Purification and biochemical characterization of simplified eukaryotic nitrate reductase expressed in Pichia pastoris. Barbier, G. G., Joshi, R. C., Campbell, E. R., Campbell, W. H. Protein Expression and Purification. 37(1): 61-71. 2004.
7. Structural basis of eukaryotic nitrate reduction: crystal structures of the nitrate reductase active site. Fischer, K., Barbier, G. G., Hecht, H. J., Mendel, R. R., Campbell, W. H., Schwarz, G. The Plant Cell. 17(4): 1167-1179. 2005.
8. Structural insights into sulfite oxidase deficiency. Karakas, E., Wilson, H. L., Graf, T. N., Xiang, S., Jaramillo-Busquets, S., Rajagopalan, K. V., Kisker, C. The Journal of Biological Chemistry. 280(39): 33506-33515. 2005.
9. Structure and function of eukaryotic NAD(P)H:nitrate reductase. Campbell, W. H. Cellular and Molecular Life Sciences: CMLS. 58(2): 194-204. 2001.
10. The crystal structure of plant sulfite oxidase provides insights into sulfite oxidation in plants and animals. Schrader, N., Fischer, K., Theis, K., Mendel, R. R., Schwarz, G., Kisker, C. Structure (London, England: 1993). 11(10): 1251-1263. 2003.