
(a) Pyramidal classification of 23 proteins that belong to the 4Fe-4S bacterial-type ferredoxin family (cluster 119). The classification enables a clear partitioning into three coherent families. (b) Schematic representation of the various domains found in cluster 130 as displayed by XDOM. Two subfamilies are clearly recognizable. (Top) Ferredoxin-NADP reductase subfamily; (bottom) NADPH-cytochrome P450 reductase subfamily. Sequence O04434 was a fragment and not labeled as such in TrEMBL.











