What might happen if a protein has a change in one amino acid?

Question

The amino acid chain folds incorrectly.

The protein has a new shape.

The protein can no longer function properly.

All of these happen.

Answer 1

There are several different types of amino acids. Some interact well with water, some do not. Some have a negative charge and some have a positive charge. Because of this variation, a number of protein changes can happen due to one amino acid substitution. The answer is all of the above.