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chromoprotein

American  
[kroh-muh-proh-teen, -tee-in] / ˌkroʊ məˈproʊ tin, -ti ɪn /

noun

Biochemistry.
  1. a protein, as hemoglobin or rhodopsin, containing a pigmented nonprotein group, such as heme, riboflavin, or retinal.


chromoprotein British  
/ ˌkrəʊməʊˈprəʊtiːn /

noun

  1. 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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of chromoprotein

First recorded in 1920–25; chromo- + protein