***iron transport/storage 1bfr bacterioferritin (complete) 1nf4 reduced BACTERIOFERRITIN 1R03bu human H-chain apoferritin 1bp5 N-lobe human apotransferrin 1n84 N-lobe human serum Tf 1jnf rabbit serum transferrin 1B0L Fe(III) lactoferrin, human 1H76 Fe(III) serumTf, pig, ACTA CRYSTALLOGR.,SECT.D 2002 ***electron transfer 1a70 [2Fe2s] ferrodoxin (spinach) 1aso ascorbate oxidase, reduced (zucchini), mod=1subunit 1fhh rubredoxin, oxidized (clostridium pasteurianum) 1iqz [4Fe4S] ferrodixin, (bacillus thermoproteolyticus) 1jer stellacyanin, cucumber 5cyt cytochrome c, reduced (tuna heart) 5pcy plastocyanin, reduced (poplar) 1plc plastocyanin, reduced (poplar) 1joi azurin, PSEUDOMONAS FLUORESCENS 2cbp cucumber "basic blue" plantacyanin J.Mol.Biol. 1996 8paz pseudoazurin ALCALIGENES FAECALIS, Biochem. 1997 2aza azurin (oxidized) ALCALIGENES DENITRIFICANS, J.Mol.Biol.1988 1BEX azurin, Ru-modified, PSEUDOMONAS AERUGINOSA ***mitoet 2fug Complex I, hydrophilic domain 1kyo cytochrome bc1 w/ bound cyto c (yeast) PNAS2002 1ntz cytochrome bc1 w/ bound UQ2 (bovine heart) Biochem2003 1be3 cytochrome bc1 Rieske at c1 (bovine heart) Science1998 1nek succinate dehydrogenase (complex II) (e coli) (with FAD and UQ2) Science2003 1nen succinate dehydrogenase (complex II) (e coli) (with FAD and dinitrophenol) Science2003 1occ cytochrome c oxidase, ox'd (bovine heart) Science1996 2occ cytochrome c oxidase, ox'd with O2 (bovine heart) Science1998 1ocr cytochrome c oxidase, red'd (bovine heart) Science1998, mod=1/2 homodimer ***photosynthesis 1C6R cytc6, reduced, green algae, J.MOL.BIOL.1999 1FMR FERREDOXIN:NADP+ OXIDOREDUCTASE (FNR) WITH 3-ADENOSINE-2',5'-DIPHOSPHATE, spinach, Science1991 1JB0 PSI, cyanobacterial, Nature 2001 (mod=replace cl1->cla, cl2->clb, fs4->fes) 1S5L PSII, cyanobacterial, Science 2004 (mod=replace ch1 with cha) 2AXT PSII, cyanobacterial, Nature 2005 1VF5 cytb6f complex, cyanobacterial M.LAMINOSUS, Science 2003 ***sulfur cycle 1SOX sufite oxidase, both MO+b5 2A99 sulfite oxidase, chicken 2A9A sulfite oxidase with sulfate 2A9B sulfite oxidase R138Q 2A9C sulfite oxidase R138Q with sulfate 2A9D sulfite oxidase ?161R ? ***O2 transport 1a3n deoxyHb (human) 1a6m oxyMb (sperm whale) 1a6n deoxyMb (sperm whale) 1faw oxyHb (goose) 1hho oxyHb (human) 1hmd deoxyHr (sipunculid worm), mod=1subunit 1hmo oxyHr (sipunculid worm), mod=1subunit 1I4Y metHr octamer 1lla deoxyHc (horseshoe crab) 1oxy oxyHc (horseshoe crab) ***N2cycle 1m1n N2ase MoFe (azotobacter vinelandii) -- with core N atom!?, mod=1subunit 1cp2 N2ase Fe protein (CLOSTRIDIUM PASTEURIANUM) 1n2c N2ase Fe-MoFe complex with ADPAlF4 (az vinelandii) 1snr CuNiR NO bound 1sjm CuNir [NO2]- bound 1OGY nitrate reductase (periplasmic) NapAB NatStructBiol 2003 1OGYmod just one 1Q16 nitrate reductase (membrane) NarGHI 1KQF formate dehydrogenase N FdhN-GHI 1BL9 reduced cd1 NiR, Ps.aeug. 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