The presence of iron in photosynthetic pyridine nucleotide reductase.
D007501:Iron / Q000737:chemistry*; D009711:Nucleotides; D010088:Oxidoreductases / Q000737:chemistry*; D010788:Photosynthesis; D011725:Pyridines
D009711:Nucleotides; D011725:Pyridines; D007501:Iron; D010088:Oxidoreductases
DEHYDROGENASES/chemistry; IRON/chemistry