<prompt> An example of chromoprotein isHemoglobinSturineNucleinGliadin  <response>: Chromoproteins: These are proteins with coloured prosthetic groups. Hemoglobin Heme, red; Flavoproteins Riboflavin, yellow, Visual purple Vitamin A, purple are some examples of chromoproteins.Reference: Vasudevan 7th ed, pg 43 