1.14.13.81 1,10-phenanthroline chelation of Fe2+ 62 1.14.13.81 2,2'-bipyridyl chelation of Fe2+ 1706 1.14.13.81 2-mercaptoethanol 24% inhibition at 1 mM 63 1.14.13.81 4-chloromercuribenzene sulfonate partial inhibition of intact chloroplasts at 2.5 mM 33064 1.14.13.81 4-chloromercuribenzene sulfonate 50% inhibition at 0.6 mM, 75% inhibition at 1.5 mM 33064 1.14.13.81 4-chloromercuribenzoate complete inhibition at 0.4 mM 388 1.14.13.81 amitrole 0.1 and 1 mM 22086 1.14.13.81 benzoquinone - 1674 1.14.13.81 CN- inhibition of reconstituted system 159 1.14.13.81 CN- iron chelator strongly inhibits enzyme in reconstituted in vitro assay but not or only slightly in intact chloroplast systems with membrane-bound haemoprotein 159