response to unfolded protein response to hormone response to cytokine response to misfolded protein obsolete response to protein true This term was made obsolete because more specific terms exist. GO:0051789 OBSOLETE. Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a protein stimulus. biological_process response to protein response to protein stimulus response to growth factor