>gnl|CDD|99812 cd06216, FNR_iron_sulfur_binding_2, Iron-sulfur binding ferredoxin reductase (FNR) proteins combine the FAD and NAD(P) binding regions of FNR with an iron-sulfur binding cluster domain. Ferredoxin-NADP+ (oxido)reductase is an FAD-containing enzyme that catalyzes the reversible electron transfer between NADP(H) and electron carrier proteins such as ferredoxin and flavodoxin. Isoforms of these flavoproteins (i.e. having a non-covalently bound FAD as a prosthetic group) are present in chloroplasts, mitochondria, and bacteria in which they participate in a wide variety of redox metabolic pathways. The C-terminal domain contains most of the NADP(H) binding residues and the N-terminal domain interacts non-covalently with the isoalloxazine rings of the flavin molecule which lies largely in a large gap betweed the two domains. Ferredoxin-NADP+ reductase first accepts one electron from reduced ferredoxin to form a flavin semiquinone intermediate. The enzyme then accepts a second electron to form FADH2 which then transfers two electrons and a proton to NADP+ to form NADPH.. Length = 243

 Score = 59.5 bits (145), Expect = 6e-10
 Identities = 35/108 (32%), Positives = 59/108 (54%), Gaps = 7/108 (6%)

Query: 34  RP--KSFRFRSGEFVMLGLIVNGRPIFRAYSIAS-PCRDDKLEFCSIK-VDKGFFTTYL- 88
           RP       R+G+ V LG+ ++G   +R+YS++S P ++D     ++K    G  + +L 
Sbjct: 38  RPNRGWPGHRAGQHVRLGVEIDGVRHWRSYSLSSSPTQEDGTITLTVKAQPDGLVSNWLV 97

Query: 89  QNIQPGDTILLHKKSTGDLILDSLIPGNRLYLFSMGTGIAPFASMIRD 136
            ++ PGD + L  +  GD +L   +P  RL L + G+GI P  SM+R 
Sbjct: 98  NHLAPGDVVEL-SQPQGDFVLPDPLPP-RLLLIAAGSGITPVMSMLRT 143