The answer is; The cell will not make functional proteins from that mRNA strand.
The mRNA will not make a functional protein because the folding of the protein will be altered including its interactions with other proteins or substrates. Luckily, proteins and mRNA have a short half-life in the body and the biomolecules will normally be degraded after some time with functional proteins taking their place.
Functional proteins will replace them because the DNA remains the same without mutations hence other mRNA transcribed afterward will translate to functional proteins.
Vinegar could usually be added to pickles because the added acid of the vinegar inhibits any sort of bacteria from entering the substance, and this would help keep them fresh for a longer period of time too.
