multienzyme complex
Cluster of distinct enzymes catalysing consecutive reactions of a metabolic pathway, that remain physically associated through purification procedures. Multifunctional enzymes, found in eukaryotes, are a somewhat different phenomenon, since the several enzymic activities are associated with different domains of a single polypeptide.

Dictionary of molecular biology. 2004.

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  • multienzyme — Referring to several enzymes; E.G., m. complex. * * * mul·ti·en·zyme .məl tē en .zīm, .tī adj composed of or involving two or more enzymes or subunits similar to enzymes that function in a biosynthetic pathway <a multienzyme complex> …   Medical dictionary

  • multienzyme — adjective Date: 1961 composed of or involving two or more enzymes that function in a biosynthetic pathway < multienzyme complex > …   New Collegiate Dictionary

  • complex — 1. An organized constellation of feelings, thoughts, perceptions, and memories that may be in part unconscious and may strongly influence associations and attitudes. 2. In chemistry, the relatively stable combination of two or more compounds into …   Medical dictionary

  • Pyruvate dehydrogenase complex — (PDC) is a complex of three enzymes that transform pyruvate into acetyl CoA by a process called pyruvate decarboxylation. Acetyl CoA may then be used in the citric acid cycle to carry out cellular respiration, and this complex links the… …   Wikipedia

  • branched-chain α-keto acid dehydrogenase complex — a multienzyme complex composed of 3 methyl 2 oxobutanoate dehydrogenase (2 methylpropanoyl transferring) [EC 1.2.4.4] (more commonly called branched chain α keto acid dehydrogenase), dihydrolipoyllysine residue (2 methylpropanoyl)transferase …   Medical dictionary

  • pyruvate dehydrogenase complex — a multienzyme complex consisting of multimers of the three distinct enzymes: pyruvate dehydrogenase (acetyl transferring) [EC 1.2.4.1], dihydrolipoyllysine residue acetyltransferase [EC 2.3.1.12], and dihydrolipoyl dehydrogenase [EC 1.8.1.4]. The …   Medical dictionary

  • α-ketoglutarate dehydrogenase complex — a multienzyme complex consisting of at least three distinct enzymes: oxoglutarate dehydrogenase (succinyl transferring) [EC 1.2.4.2] (more commonly called α ketoglutarate dehydrogenase), dihydrolipoyllysine residue succinyltransferase [EC… …   Medical dictionary

  • Oxoglutarate dehydrogenase complex — The oxoglutarate dehydrogenase complex (OGDC) or α ketoglutarate dehydrogenase complex is an enzyme complex, most commonly known for its role in the citric acid cycle. Contents 1 Units 2 Properties 2.1 Metabolic pathways 2.2 …   Wikipedia

  • Exosome complex — The exosome complex (or PM/Scl complex, often just called the exosome) is a multi protein complex, capable of degrading various types of RNAs. Exosome complexes can be found in both eukaryotic cells and archaea, while in bacteria a simpler… …   Wikipedia

  • Cytochrome b6f complex — Crystal structure of the cytochrome b6f complex from C. reinhardtii (1q90). Hydrocarbon boundaries of the lipid bilayer are shown by red and blue dots …   Wikipedia

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