protoporphyrin
noun Etymology: International Scientific Vocabulary Date: 1925 a purple porphyrin acid C34H34N4O4 obtained from hemin or heme by removal of bound iron

New Collegiate Dictionary. 2001.

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  • Protoporphyrin — Protoporphyrins are tetrapyrroles containing the following side chains:* methyl (4) * propionic acid (2) * vinyl (2)Protoporphyrin IX is a biochemically widely used carrier molecule for divalent cations, e.g. together with iron (Fe 2+) the body… …   Wikipedia

  • Protoporphyrin — Strukturformel des Porphyrin Gerüst mit Nummerierung. Strukturformel von Protoporphyrin IX. Porphyrine (nach griechisch πορφυρά, porphyrá, dem …   Deutsch Wikipedia

  • protoporphyrin — Porphyrin ring structure lacking metal ions. The most abundant is protoporphyrin IX, the immediate precursor of haem …   Dictionary of molecular biology

  • Protoporphyrin — Pro|to|por|phy|rin [↑ proto ] Syn.: Protoporphyrin IX: Trivialname für ein achtfach substituiertes ↑ Porphyrin (C34H34N4O4), von dem sich u. a. Hamätoporphyrin u. Häm sowie Chlorophyll ableiten …   Universal-Lexikon

  • protoporphyrin — pro·to·por·phy·rin .prōt ō pȯr f(ə )rən n a purple porphyrin acid C34H34N4O4 obtained from hemin or heme by removal of bound iron * * * pro·to·por·phy·rin (pro″to porґfə rin) the porphyrin produced by oxidation of the methylene bridge …   Medical dictionary

  • protoporphyrin — pro·to·por·phy·rin (prō tō pôrʹfə rĭn) n. A metal free porphyrin, C32H32N4(COOH)2, that combines with ferrous iron to form the heme group in hemoglobin and myoglobin, and with ferric iron to form the hemin group in catalase and some cytochromes.… …   Universalium

  • protoporphyrin — noun Any porphyrin that lacks a central metal ion …   Wiktionary

  • protoporphyrin — pro·to·porphyrin …   English syllables

  • protoporphyrin — |prōd.(ˌ)ō+ noun Etymology: International Scientific Vocabulary prot + prophyrin : a purple porphyrin acid C32H32N4(COOH)2 that is obtained from hemin or heme by removal of bound iron (as with formic acid and iron filings); tetramethyl divinyl… …   Useful english dictionary

  • Protoporphyrin IX — Strukturformel des Porphyrin Gerüst mit Nummerierung. Strukturformel von Protoporphyrin IX. Porphyrine (nach griechisch πορφυρά, porphyrá, dem …   Deutsch Wikipedia

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