Hemoprotein

Hemoprotein

A hemoprotein (also haemoprotein), or heme protein, is a metalloprotein containing a heme prosthetic group, either covalently or noncovalently bound to the protein itself. The iron in the heme is capable of undergoing oxidation and reduction (usually to +2 and +3, though stabilized ferryl [Fe+4] compounds are well known in the peroxidases).

Roles

Hemoproteins have diverse biological functions including:

* oxygen transport
** hemoglobin
** hemocyanin
** myoglobin
** neuroglobin
** cytoglobin
** leghemoglobin
* catalysis
** peroxidases
** cytochrome c oxidase
** ligninases
* active membrane transport
** cytochromes
* electron transfer
** cytochrome c
** catalase
* Sensory
** FixL (Oxygen sensor)
** sGC (Nitric Oxide sensor)
** CooA (CO sensor)

External links

*


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • hemoprotein — hemoproteinas statusas T sritis chemija apibrėžtis Baltymas, turintis hemą ir pernešantis deguonį. atitikmenys: angl. hemoprotein rus. гемопротеин …   Chemijos terminų aiškinamasis žodynas

  • hemoprotein — noun Date: 1948 a conjugated protein (as hemoglobin or cytochrome) whose prosthetic group is a porphyrin combined with iron …   New Collegiate Dictionary

  • hemoprotein — Protein linked to a metal porphyrin compound ( e.g., cytochromes, myoglobin, catalase). * * * he·mo·pro·tein or chiefly Brit hae·mo·pro·tein prō .tēn, prōt ē ən n a conjugated protein (as hemoglobin or cytochrome) whose prosthetic group is a… …   Medical dictionary

  • hemoprotein — he·mo·protein …   English syllables

  • hemoprotein — noun a conjugated protein linked to a compound of iron and porphyrin • Syn: ↑haemoprotein • Hypernyms: ↑conjugated protein, ↑compound protein • Hyponyms: ↑hemoglobin, ↑haemoglobin, ↑H …   Useful english dictionary

  • NADPH—hemoprotein reductase — Identifiers EC number 1.6.2.4 CAS number 9023 03 4 …   Wikipedia

  • NADPH-hemoprotein reductase — In enzymology, a NADPH hemoprotein reductase (EC number|1.6.2.4) is an enzyme that catalyzes the chemical reaction:NADPH + H+ + n oxidized hemoprotein ightleftharpoons NADP+ + n reduced hemoproteinThe 3 substrates of this enzyme are NADPH, H+,… …   Wikipedia

  • NADPH–hemoprotein reductase — NADPH–he·mo·pro·tein re·duc·tase (heґmo pro″tēn re dukґtās) [EC 1.6.2.4] an enzyme of the oxidoreductase class that catalyzes the transfer of electrons to cytochromes via oxidation of NADPH. It is a flavoprotein (FMN, FAD)… …   Medical dictionary

  • Cytochrome P450 reductase — P450 (cytochrome) oxidoreductase PDB rendering based on 1amo …   Wikipedia

  • cytochrome — A class of hemoprotein whose principal biologic function is electron and/or hydrogen transport by virtue of a reversible valency change of the heme iron. Cytochromes are classified in four groups (a, b, c, and d) according to spectrochemical… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”