Picture list of proteins function of the protein

i need proteins such as milk i can use for this assignment plz me brainstorm some ideas i need 3 proteins to use

here is an example on the bottom

Tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d