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Absorption by Isolated Ferric Heme Nitrosyl Cations In Vacuo
Author(s) -
Wyer Jean Ann,
Brøndsted Nielsen Steen
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201206213
Subject(s) - porphyrin , heme , ferric , chemistry , absorption (acoustics) , histidine , absorption spectroscopy , photochemistry , ligand (biochemistry) , hemeprotein , crystallography , inorganic chemistry , materials science , organic chemistry , amino acid , biochemistry , physics , receptor , quantum mechanics , composite material , enzyme
Almost innocent : In photobiophysical studies of ferric heme nitrosyl complexes, the absorption spectra of six‐coordinate complexes with NO and Met or Cys are similar to that of the five‐coordinate complex ion Fe(heme)(NO) + . Since the absorption spectra of related proteins with histidine as the proximal ligand are similar to those of the gaseous complexes, the protein microenvironment has little effect on the lowest‐energy transition of the porphyrin macrocycle.