>cd06217 FNR_iron_sulfur_binding_3 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 between 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

Probab=100.00 E-value=0 Score=327.25 Aligned_cols=228 Identities=20% Similarity=0.294 Sum_probs=185.5 Q ss_pred CCEEEEEEEECCCCEEEEEEECC--CCCCCCCCCEEEEEEEC-CCEEEEEEEEECCCCCC-CCEEEEEEEECCCCCCCCC Q ss_conf 10689888847998699998077--89983997179999843-98588766542285768-8605899994388856610 Q gi|254780363|r 13 YCESVISIKHYTDRLFRFCITRP--KSFRFRSGEFVMLGLMV-NGRRISRAYSMASPCWD-DKLEFFSIKVEQGPLTTHL 88 (264) Q Consensus 13 ~~~~V~~v~~~t~~~~~~~l~~~--~~~~f~~GQ~v~i~~~~-~g~~~~R~YSiaS~p~~-~~le~~i~~v~~G~~S~~L 88 (264) T Consensus 2 r~~~V~~v~~~t~~i~~~~l~~~~~~~~~f~pGQ~v~l~~~~~~g~~~~R~ySi~s~p~~~~~~~~~vk~~~~G~~s~~l 81 (235) T cd06217 2 RVLRVTEIIQETPTVKTFRLAVPDGVPPPFLAGQHVDLRLTAIDGYTAQRSYSIASSPTQRGRVELTVKRVPGGEVSPYL 81 (235) T ss_pred EEEEEEEEEEECCCCEEEEEECCCCCCCCCCCCEEEEEEEECCCCCEEEEEEECCCCCCCCCEEEEEEEECCCCCHHHHH T ss_conf 13799999993899599999868999898089801999997579918677773066899998899999989999278899 Q ss_pred C-CCCCCCEEECCCCCCCCCCCCCCCCCCEEEEEECCCCHHHHHHHHHHHHHHCCCCCEEEEEECCCHHHHHHHHHHHHH Q ss_conf 0-123885100257887321643223586699997586727789988763410357857999951998898733566898 Q gi|254780363|r 89 Q-NIQPGDTILLHKKSTGTLVLDALIPGNRLYLFSTGTGIAPFVSVIRDPGTYEKFDEVIVTQTCRQVVELQYGIDVMHE 167 (264) Q Consensus 89 ~-~l~~Gd~i~i~~~p~G~f~~d~~~~~~~lilIAgGtGItP~~sii~~~~~~~~~~~i~L~~g~R~~~dl~y~~~l~~~ 167 (264) T Consensus 82 ~~~l~~Gd~v~v~g-P~G~f~~~~~-~~~~~llIAgG~GItP~~s~l~~~~~~~~~~~i~l~~g~r~~~d~~~~~el~~l 159 (235) T cd06217 82 HDEVKVGDLLEVRG-PIGTFTWNPL-HGDPVVLLAGGSGIVPLMSMIRYRRDLGWPVPFRLLYSARTAEDVIFRDELEQL 159 (235) T ss_pred HHHCCCCCEEEEEC-CCCCCCCCCC-CCCCEEEEECCCCCCHHHHHHHHHHHHCCCCCEEEEEECCCHHHHHHHHHHHHH T ss_conf 86265997499972-5116422777-898589994587757699999999970999738999725997996669999999 Q ss_pred HHHHHHHHHHHCCCCEEEEECCCCC-CCCCCCCCCCCCCCHHHHHCCCCCCCHHCCEEEEECCHHHHHHHHHHHHHCCCC Q ss_conf 9864457774058843898204544-444656775431104788528998873137899968989999999999986985 Q gi|254780363|r 168 ISQDEILKDLIGQKLKFYRTVTQED-YLYKGRITNHILSGEFYRNMDLSPLNPDTDRIMICGSPTMIVDMKDLLIAKKFR 246 (264) Q Consensus 168 ~~~~~~~~~~~~~~~~~~~~~s~e~-~~~~grit~~i~~g~l~~~~~~~~~~~~~~~vyiCGpp~Mi~~v~~~L~~~G~~ 246 (264) T Consensus 160 ~~~~--------~~~~~~~~~s~~~~~~~~g~~-g~i~~~~l~~~~----~~~~~~~vyiCGP~~m~~~v~~~L~~~Gv~ 226 (235) T cd06217 160 ARRH--------PNLHVTEALTRAAPADWLGPA-GRITADLIAELV----PPLAGRRVYVCGPPAFVEAATRLLLELGVP 226 (235) T ss_pred HHHC--------CCEEEEEEECCCCCCCCCCCC-CCCCHHHHHHHC----CCCCCCEEEEECCHHHHHHHHHHHHHCCCC T ss_conf 9768--------997999997567756656876-762899998537----888897999929999999999999986997 Q ss_pred CCCCCCCCEEEEEEE Q ss_conf 315679950999987 Q gi|254780363|r 247 EGSNSRPGTFVVERA 261 (264) Q Consensus 247 ~~~~~~~g~~~~E~~ 261 (264) T Consensus 227 ~~------~I~~E~F 235 (235) T cd06217 227 RD------RIRTEAF 235 (235) T ss_pred HH------HEEEEEC T ss_conf 89------9797269

HHsearch alignment for GI: 254780363 and conserved domain: cd06217