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A conjugated protein, such as hemoglobin, that contains a pigmented prosthetic group, such as heme.
(Microbiology) any of a group of conjugated proteins, such as haemoglobin, in which the protein is joined to a coloured compound, such as a metal-containing porphyrin
chro•mo•pro•tein(ˌkroʊ məˈproʊ tin, -ti ɪn)
a protein, as hemoglobin or rhodopsin, containing a pigmented nonprotein group, as heme, riboflavin, or retinal.