“…In many biological systems, nitrosylation participates in signaling (reviewed in Astier et al, 2011Astier et al, , 2012 or induces protein degradation (Souza et al, 2000, Kim et al, 2004Lee et al, 2008;Wei et al, 2011;Tang et al, 2012;Jaba et al, 2013). Here, we reasoned that most of the cytochrome b 6 f subunits and biogenesis factors belong to heme binding complexes or participate in the biogenesis of heme binding proteins, which are particularly prone to nitrosylation (Thomas et al, 2003;Angelo et al, 2008).…”