1) Pigment
Found on
https://www.crosswordclues.com/clue/porphyrin
Porphyrins are a group of heterocyclic macrocycle organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges (=CH−). The parent porphyrin is porphine, and substituted porphines are called porphyrins. The porphyrin macrocycle has 26 (delocalized) pi electrons in total, therefore by H
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http://en.wikipedia.org/wiki/Porphyrin
any of a class of water-soluble, nitrogenous biological pigments (biochromes), derivatives of which include the hemoproteins (porphyrins combined ... [13 related articles]
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http://www.britannica.com/eb/a-z/p/95
<protein> Porphyrins are pigments found in both animal and plant life. They are all chelates with metals (Fe, Mg, Co, Zn, Cu, Ni) and constituents of haemoglobin, chlorophyll, cytochromes. ... Increased levels of coproporphyrins can indicate congenital erythropoietic porphyria or sideroblastic anaemia. Increased protoporphyrins may be seen in...
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http://www.encyclo.co.uk/local/20973
(por´fә-rin) any of a group of iron- or magnesium-free cyclic tetrapyrrole derivatives, occurring universally in protoplasm, and forming the basis of the respiratory pigments of animals and plants; in combination with iron they form hemes. Examples include coproporphyrin, hematoporphyrin, protoporphyrin, and uropo...
Found on
http://www.encyclo.co.uk/local/21001
a metabolic byproduct of hemoglobin production.
Found on
http://www.encyclo.co.uk/local/22225
Type: Term Pronunciation: pōr′fi-rin Synonyms: porphin
Found on
http://www.medilexicon.com/medicaldictionary.php?t=71253
[
n] - any of various pigments distributed widely in living tissues
Found on
http://www.webdictionary.co.uk/definition.php?query=porphyrin
noun any of various pigments distributed widely in living tissues
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.
