PDB: 1GU6; Bamford VA, Angove HC, Seward HE, Thomson AJ, Cole JA, Butt JN, Hemmings AM, Richardson DJ (March 2002). "Structure and spectroscopy of the periplasmic cytochrome c nitrite reductase from Escherichia coli". Biochemistry. 41 (9): 2921–31. doi:10.1021/bi015765d. PMID11863430.
Clarke TA, Mills PC, Poock SR, Butt JN, Cheesman MR, Cole JA, Hinton JC, Hemmings AM, Kemp G, Söderberg CA, Spiro S, Van Wonderen J, Richardson DJ (2008). "Escherichia coli Cytochrome c Nitrite Reductase NrfA". Globins and Other Nitric Oxide-Reactive Proteins, Part B. Methods in Enzymology. Vol. 437. pp. 63–77. doi:10.1016/S0076-6879(07)37004-3. ISBN9780123742780. PMID18433623.
PDB: 1GU6; Bamford VA, Angove HC, Seward HE, Thomson AJ, Cole JA, Butt JN, Hemmings AM, Richardson DJ (March 2002). "Structure and spectroscopy of the periplasmic cytochrome c nitrite reductase from Escherichia coli". Biochemistry. 41 (9): 2921–31. doi:10.1021/bi015765d. PMID11863430.
Clarke TA, Mills PC, Poock SR, Butt JN, Cheesman MR, Cole JA, Hinton JC, Hemmings AM, Kemp G, Söderberg CA, Spiro S, Van Wonderen J, Richardson DJ (2008). "Escherichia coli Cytochrome c Nitrite Reductase NrfA". Globins and Other Nitric Oxide-Reactive Proteins, Part B. Methods in Enzymology. Vol. 437. pp. 63–77. doi:10.1016/S0076-6879(07)37004-3. ISBN9780123742780. PMID18433623.