porphyrin
noun Etymology: International Scientific Vocabulary, from Greek porphyra purple Date: 1910 any of various compounds with a macrocyclic structure that consists essentially of four pyrrole rings joined by four =CH– groups; especially one (as chlorophyll or hemoglobin) containing a central metal atom and usually exhibiting biological activity

New Collegiate Dictionary. 2001.

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  • porphyrin — [pôr′fə rin] n. [< Gr porphyra, purple + IN1] any of a group of pyrrole derivatives, found in cytoplasm, that combine with iron and magnesium to form heme and chlorophyll, respectively …   English World dictionary

  • Porphyrin — Structure of porphine, the simplest porphyrin Heme group of hemoglobin. An …   Wikipedia

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

  • porphyrin — SYN: porphin. * * * por·phy·rin pȯr fə rən n any of various compounds with a structure that consists essentially of four pyrrole rings joined by four =CH groups esp one (as chlorophyll or hemoglobin) containing a central metal atom and usu.… …   Medical dictionary

  • porphyrin — porfirinas statusas T sritis chemija apibrėžtis Porfinui artimas junginys. atitikmenys: angl. porphyrin rus. порфирин …   Chemijos terminų aiškinamasis žodynas

  • porphyrin — /pawr feuh rin/, n. Biochem. a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B12. [1905 10; < Gk porphýr(a) PURPLE + IN2] * * * Any of a class of… …   Universalium

  • porphyrin — noun Any of a class of heterocyclic compounds containing four pyrrole rings arranged in a square; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyl …   Wiktionary

  • Porphyrin — Por|phy|rin [↑ Porphyr u. ↑ in (3)], das; s, e; Syn.: 21H,23H Porphin: C20H14N4; dunkelrote krist. Verb., Smp. > 360 °C, mit einem makrocycl. System aus 4 durch Methingruppen verbundenen Pyrrolringen (Tetrapyrrol). Partiell reduzierte,… …   Universal-Lexikon

  • Porphyrin — Por|phy|rin 〈n.; Gen.: s, Pl.: e; Chemie〉 aus vier Pyrrol Ringen bestehende, makromolekulare chem. Verbindung, deren metallorganische Verbindungen mit Eisen oder Magnesium das Grundgerüst des Blutfarbstoffs od. Chlorophylls bilden …   Lexikalische Deutsches Wörterbuch

  • Porphyrin — Por|phyri̱n [zu gr. πορϕυρα = Purpurschnecke; Purpur] s; s, e (meist Mehrz.): biologisch wichtige, durch Synthese von Pyrrolringen entstehende Verbindungen, die z. B. im Blutfarbstoff und im Blattgrün enthalten sind und eine… …   Das Wörterbuch medizinischer Fachausdrücke

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