Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of a class of iron-containing proteins important in cell respiration as catalysts of oxidation-reduction reactions.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of various related hemoproteins found in the cells of most organisms, which are an important part of cell respiration.

from The Century Dictionary and Cyclopedia

  • In neural., a name given by Nissl to the so-called ‘granules,’ or nerve-cells with scanty cytoplasm incompletely surrounding a small nucleus which does not exceed in size the nucleus of an ordinary leucocyte or neuroglia cell: opposed to *caryochrome cell which has a larger nucleus.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration)

Etymologies

From cyto- + Ancient Greek χρῶμα (khrōma, "colour"). (Wiktionary)

Examples

  • Researchers found differences in 10 genes around an enzyme called cytochrome P450 1b1, which is known to break down estrogen and tobacco smoke.

    Lung Cancer in Women on the Rise

  • Humans have an enzyme called cytochrome P450 3A4 that helps to metabolize calcium channel blockers and clear them from the system.

    The Seattle Times

  • They all belong to a major family of enzymes called cytochrome P450 that act as a catalyst for a broad range of chemical reactions and are implicated in pesticide resistance in other insect species.

    Why Bedbugs Won't Die

  • DavidDP at 7.27: ever come across something called cytochrome C?

    John Terry’s sacking as England captain tells us something interesting...

  • During Phase I detox at least 120 members of the enzyme family known as cytochrome P450s pretreat the hundreds of thousands of toxins that your body encounters every day.

    The Source

  • A relatively new drug, atovaquone, which interfered with a different step in P. falciparum metabolism, can be countered by a single amino acid mutation in a protein called cytochrome b.3 The very latest drug, artemisinin, is derived from the Chinese sweet wormwood plant.

    The Edge of Evolution

  • Statins are denatured in the liver by a system called the cytochrome P450 system.

    All MayoClinic.com Topics

  • Anopheles funestus mosquito and identified a family of genes coding for enzymes known as cytochrome P450s, detecting two genes which were associated with resistance to pyrethroid insecticide.

    EurekAlert! - Breaking News

  • An. funestus that are both susceptible and resistant to pyrethroids, and narrowed down the potential genetic culprits to members of a family of genes coding for enzymes known as cytochrome P450s.

    EurekAlert! - Breaking News

  • The group studied strains of An. funestus that are both susceptible and resistant to pyrethroids, and narrowed down the potential genetic culprits to members of a family of genes coding for enzymes known as cytochrome P450s.

    innovations-report

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