
1) Biological pigment
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https://www.crosswordclues.com/clue/chromoprotein

A chromoprotein is a conjugated protein that contains a pigmented prosthetic group (or cofactor). A common example is hemoglobin, which contains a heme cofactor, which is the iron-containing molecule that makes oxygenated blood appear red. Other examples of chromoproteins are: myoglobin, cytochromes and flavoproteins. In hemoglobin: chromoprotein ...
Found on
http://en.wikipedia.org/wiki/Chromoprotein

One of a group of conjugated proteins, consisting of a combination of pigment (i.e., a coloured prosthetic group) with a protein; e.g., haemoglobin. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: krō′mō-prō′tēn Definitions: 1. One of a group of conjugated proteins, consisting of a combination of pigment (a colored prosthetic group) with a protein, hemoglobin.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=17470

a protein, as hemoglobin or rhodopsin, containing a pigmented nonprotein group, such as heme, riboflavin, or retinal.
Found on
https://www.infoplease.com/dictionary/chromoprotein
No exact match found.