negative regulation of peptidyl-lysine crotonylation
Any process that stops or reduces the rate of crotonylation of a lysine residue in a protein.
GO:0031400
negative regulation of protein modification process
is_a
GO:0120093
regulation of peptidyl-lysine crotonylation
is_a
GO:0140066
peptidyl-lysine crotonylation
negatively_regulates