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protoporphyrin

/ ˌprəʊtəʊˈpɔːfɪrɪn /

noun

  1. a type of porphyrin that, when combined with an iron atom, forms haem, the oxygen-bearing prosthetic group of the red blood pigment haemoglobin
“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


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Example Sentences

In the new report published Wednesday in Nature, they write that they found a red-brown pigment called protoporphyrin IX and a blue-green one called biliverdin5 in both modern birds and in a group of dinosaurs that were ancestors of modern birds — Eumaniraptorans, including favorites like velociraptor.

Using Raman spectroscopy, a nondestructive analytic tool, Wiemann looked for the molecular signatures of protoporphyrin and biliverdin in the oviraptor eggshells.

Another molecule, protoporphyrin, provides the rusts and browns.

A few years ago, Mark Hauber, an ornithologist at University of Illinois at Urbana-Champaign, and his colleagues designed a protocol to examine biliverdin and protoporphyrin in eggshells, including shells from a giant extinct bird called the moa.

In the eumaniraptorans, the researchers found evidence of a blue-green pigment called biliverdin and a red-brown pigment called protoporphyrin IX structurally integrated into the crystal matrix of the eggshell, as they are with birds.

From Reuters

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