KROK 1 2009 – Question 20 · KROK (Medicine) · Biological Chemistry
A 62-year-old female patient has developed a cataract (lenticular opacity) secondary to the diabetes mellitus. What type of protein modification is observed in case of diabetic cataract?
- A. ADP-ribosylation
- B. Glycosylation
- C. Phosphorylation
- D. Limited proteolysis
- E. Methylation
Hint
Consider what sustained high blood sugar does chemically to the free amino groups of long-lived lens proteins.
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