tetrapyrrole

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tet·ra·pyr·role

(tet'ră-pir'ōl),
A molecule containing four pyrrole nuclei; for example, porphyrin.

tetrapyrrole

/tet·ra·pyr·role/ (-pĭ-rōl″) a compound containing four pyrrole rings, e.g., heme or chlorophyll.
References in periodicals archive ?
Chlorophyll, chlorophyllin and related tetrapyrroles are significant inducers of mammalian phase 2 cytoprotective genes.
The chromophoric proteins are those attached with linear tetrapyrroles and are called phycobiliproteins, while non-chromophoric proteins are called as colorless linker polypeptides.
Also included is an additional chapter on the biosynthesis of major classes of natural products such as eicosanoids, morphine, and tetrapyrroles, among others.