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Updated: Aug 11, 2026

Imaging Approaches to Assessments of Toxicological Oxidative Stress Using Genetically-encoded Fluorogenic Sensors
Published on: February 7, 2018
Photo-oxidative damage to lenticular GAPDH and its relationship to aldehyde metabolism
1Harvard Medical School, Massachusetts Eye and Ear Infirmary, Howe Laboratory of Ophthalmology, Boston 02114.
Abstract:
These studies show that GAPDH from the calf lens and human lens epithelium undergoes size and charge modifications in the presence of active oxygen species generated from methylene blue and light. The histidine content of the enzyme was reduced by one third. No evidence of increased proteolysis was observed suggesting a nonenzymatic cleavage of enzyme by the photo-oxidants.
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