Crystal Structure of the FAD-Containing Ferredoxin-NADP+ Reductase from the Plant Pathogen Xanthomonas axonopodis pv. citri
Figure 1
(a) Cartoon representation of XacFPR structure. The N-domain is shown in yellow and the C-domain in green. The unbiased (before inclusion of FAD) electron density map is shown at 2.2 σ. FAD is in sticks with carbons in grey. Chloride ion is a red sphere. (b) Stereo representation of the FAD environment. Carbon atoms of amino acid residues and FAD are shown in white and orange, respectively. H-bonds involved in FAD stabilization are represented as dotted lines. (c) Cartoon superimposition of the active site of XacFPR (in grey), PaFPR:NADP+ complex (pdb 3crz, in orange), and RcFPR:NADP+ complex (pdb 2vnj, in green). FAD, in sticks and with carbons in grey, belongs to XacFPR structure and occupies similar position to FADs of Pa and RcFPRs complexes. NADP+s from complexes are in sticks. C-terminuses of the three structures are pointed to by arrows.
