Task: Class Definition Understanding (ontology: Sciences/Biology)

Which of the following definitions best describes 'negative regulation of protein glutathionylation'?

A. Any process that stops, prevents or reduces the frequency, rate or extent of tubulin deacetylation.
B. Any process that increases the rate, frequency, or extent of protein glutathionylation. Protein glutathionylation is the protein modification process in which a glutathione molecule is added to a protein amino acid through a disulfide linkage.
C. Any process that stops, prevents or reduces the frequency, rate or extent of peptidyl-cysteine S-nitrosylation.
D. Any process that decreases the rate, frequency, or extent of protein glutathionylation. Protein glutathionylation is the protein modification process in which a glutathione molecule is added to a protein amino acid through a disulfide linkage.

Answer: Any process that decreases the rate, frequency, or extent of protein glutathionylation. Protein glutathionylation is the protein modification process in which a glutathione molecule is added to a protein amino acid through a disulfide linkage.