“Although exposure of Synechococcus sp. PCC 7942 to iron stress induced the accumulation of …‐stressed controls, immunodetection of the N‐terminus of cytochrome (Cyt) f indicated that iron stress not only reduced …, Cyt f polypeptide by 32% but it also specifically induced …, non‐heme‐binding, putative Cyt f polypeptide.”