Iron-Sulfur Proteins Journal Article Research Support, Non-U.S. Gov't Arabidopsis Proteins Nfu2 protein, Arabidopsis chloroplast 70FD1KFU70 AT4G01940 protein, Arabidopsis Amino Acids, Branched-Chain Apoproteins Arabidopsis Arabidopsis thaliana Biogenesis Chloroplast Proteins E1UOL152H7 Iron NFU2 NFU3 protein, Arabidopsis Plant Proteins Review Sulfur branched-chain amino acids development electron transfer enzyme catalysis iron–sulfur cluster iron–sulfur protein iron–sulfur proteins mitochondria photosynthesis