Definitions
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- noun biochemistry  any of several natural pigments having a structure of fourpyrrole rings connected by a one-carbon unit
Etymologies
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Examples
- 
								The first reaction catalyzed by PebS is the reduction of the 15,16-methine bridge of the biliverdin tetrapyrrole system. 
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								The reddish purple open chain tetrapyrrole pigment phycoerythrobilin max 550 nm) is an essential chromophore of the light-harvesting phycobiliproteins of most cyanobacteria, red algae, and cryptomonads. 
fbharjo commented on the word tetrapyrrole
a light trap part and a palindrome too?!
What's next? tetrapyrrolean chromophorests? by all appyrrances!
May 16, 2010