CATALYTIC CYCLE OF HUMAN GLUTATHIONE REDUCTASE NEAR 1 A RESOLUTION OXIDOREDUCTASE, FLAVOENZYME, GLUTATHIONE, NICOTINAMIDE, ACETYLATION, ALTERNATIVE INITIATION, CYTOPLASM, FAD, FLAVOPROTEIN, MITOCHONDRION, NADP, PHOSPHOPROTEIN, POLYMORPHISM, REDOX-ACTIVE CENTER, TRANSIT PEPTIDE 3DK4