Cytochrome cd₁ structure [1]

PDB	scop	BSM	RELI Base	Header	¹
-	-	-	-	Cytochrome cd1 nitrite reductase (oxidised) (complex with glycerol and SO2); Thiosphaera pantotropha	-

a	b

c	e
d

f

¹ Macromolecular Structures abstract. Full text is available to BioMedNet Members

1. Ribbon representation of the Thiosphaera pantotropha cytochrome cd₁ dimer structure (atom coordinates courtesy Dr. Vilmos Fülöp, University of Oxford). Colour­codes: chain A = orange; chain B = violet.
2. Ribbon representation of the Thiosphaera pantotropha cytochrome cd₁ monomer (chain B) structure (orientation as a). Domain colour­codes: c domain (residues 9-135) = light blue; d₁ domain (residues 135-624) = light purple.
3. As b, c domain (residues 9-135) (orientation as b rotated -90° around x axis).
4. As b, d₁ domain (residues 135-624) (orientation as c).
5. Haem groups c (top) and d₁ (bottom) and haem iron axial ligand residues (orientation as c).
6. Haem d₁, its environment residues and one water molecule. The phenolate oxygen of Tyr­25, one of the haem iron axial ligands, is hydrogen bonded to a water which itself is hydrogen bonded to the 2 nitrogens of His­345 and His­388. (Orientation as e rotated 25° around y axis).

1. Baker, S.C., Saunders, N.F.W., Willis, A.C., Ferguson, S.J., Hajdu, J. and Fülöp, V. (1997) Cytochrome cd₁ structure: Unusual haem environments in a nitrite reductase and analysis of factors contributing to ß­propeller folds. J. Mol. Biol. 269, 440-455.
2. Kraulis, P.J. (1991) MOLSCRIPT: a program to produce both detailed and schematic plots of protein structure. J. Appl. Crystallogr. 24, 946-950.

Bibliography on structural studies of cytochrome cd1