Answer: Answer is below <3
Explanation: A mutant protein is the protein product encoded by a gene with mutation. Mutated protein can have single amino acid change (minor, but still in many cases significant change leading to disease) or wide-range amino acid changes by e.g. truncation of C-terminus after introducing premature stop codon.
A number of mutant proteins, including huntingtin, atrophin1, the androgen receptor, ataxin1, ataxin2, ataxin3, alpha 1A subunit of the Cav2.