ABSTRACT
Green hemoproteins (GHP's) are type-b cytochromes found in the brain, pancreas, liver, spleen, and red blood cells that demonstrate ferroactivator activity. GHP transfers reducing equivalents to a hypersensitive disulfide, converting it to thiols, in phosphoenolpyruvate carboxykinase (PEPCK). The simple short redox chain composed of GHP and hemoglobin couple was an excellent test case for type-b cytochromes' being sensors. Even though green hemoproteins have also been reported in spleen, pancreas, and brain, there may be other hemoproteins with similar visible light-absorption spectra. The red blood cell GHP has other properties that are very similar to liver GHP. The simple short redox chain composed of GHP and hemoglobin couple was an excellent test case for type-b cytochromes' being sensors. Monoclinic and triclinic crystals of precursors of the fibrous diazoluminomelanin (DALM) release gas in sodium carbonate and hydrogen peroxide solution. The thermally sensitive luminescence of DALM can be explained by Type E slow fluorescence.
