Post-translational modifications of proteins can affect which of the following?

a) Protein function
b) Transcriptional regulation
c) Chromatin modification
d) All of the above

Protein function

Explanation: Post-translational level is the last level in gene expression in which a protein is synthesized. This level greatly impacts the modifications in the stability, degradation and functioning of the protein. this modification is covalent in nature which highly affects the structure and function of a protein.

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a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.