... with a phenolate ligand. Hence, we identify the fifth position ligand as a tyrosine residue. In our tests, we found that excess strong anionic ligands (we used cyanide) had no spectral effects, meaning that the iron in NEAT-A is, unusually for a haem protein, inaccessible to these small ligands. Reduction yields...

...D. Lavalette; C. Tétreau; L. Mouawad Biophysical techniques developed during the last three decades have provided an increasingly detailed description of the internal processes associated with ligand capture and release by haem proteins. Myoglobin has long been the paradigm for these studies. More...