Heme c

Heme c

Chembox new
ImageFile = Heme c.svg
ImageSize = 250px
IUPACName =
OtherNames =
Section1 = Chembox Identifiers
CASNo = 26598-29-8
PubChem = 444125
SMILES =
MeSHName = heme+C
Section2 = Chembox Properties
Formula = C34H36O4N4S2Fe
MolarMass = 684.651 g/mol
Appearance =
Density =
MeltingPt =
BoilingPt =
Section3 = Chembox Hazards
Solubility =
MainHazards =
FlashPt =
Autoignition =

Heme C differs from heme B in that the two vinyl side chains are covalently bound to the apoprotein itself through thioether linkages.

In addition to these covalent bonds, the heme iron is also usually coordinated to two side chains of amino acids, making the iron hexacoordinate. For example, cytochrome c contains a single heme C that is coordinated to side chains of both histidine and methionine. [ cite journal | author=Yeh, S.R., Han, S., and Rousseau, D.L.| title=Cytochrome c folding and unfolding| journal=Accounts of Chemical Research| year=1998 | volume=31 | issue=11 | pages= 727–735| doi=10.1021/ar970084p] bc1 complex is another protein that contains a C type heme.

Some hemoproteins, often from single cell organisms, may contain up to four hemes C.

The correct structure of heme C was first published, in mid 20th century, by the Swedish biochemist K.-G. Paul.

ee also

*Heme

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Heme — Hème Hème de type b Un hème est un cofacteur contenant un atome de fer servant à accueillir un gaz diatomique (souvent le dioxygène O2) au centre d’un large anneau organique appelé porphyrine. Toutes les porphyrines ne contiennent pas… …   Wikipédia en Français

  • Hème — de type b Représentation 3D Un hème est un cof …   Wikipédia en Français

  • hème — [ ɛm ] n. m. • 1970; du gr. haima « sang » ♦ Biochim. Pigment contenant du fer ferreux et constituant la partie prosthétique de certaines protéines telles que l hémoglobine. ● hème nom masculin Composé ferreux dérivé de l hématoporphyrine qui… …   Encyclopédie Universelle

  • heme — heme; pro·to·heme; …   English syllables

  • heme — heme. См. гем. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • heme — Síntesis de la partícula demostrativa «he» y el acusativo del pronombre de primera persona. ⇒ He …   Enciclopedia Universal

  • heme —  Heme  Гем   Небелковая часть молекулы гемоглобина. Содержит в молекуле комплекс порфирина с Fe2+. Легко окисляется на воздухе до гематина, имеющего ту же структуру, но содержащего Fe3+. Обусловливает цвет крови, является переносчиком кислорода в …   Толковый англо-русский словарь по нанотехнологии. - М.

  • heme — [hēm] n. [contr. < HEMATIN] the nonprotein, iron containing pigment, C34H32N4O4Fe, that is a component part of hemoglobin, myoglobin, etc …   English World dictionary

  • Heme — A heme (American English) or haem (British English) is a prosthetic group that consists of an iron atom contained in the center of a large heterocyclic organic ring called a porphyrin . Not all porphyrins contain iron, but a substantial fraction… …   Wikipedia

  • Heme b — Chembox new ImageFile = Heme.svg ImageSize = IUPACName = OtherNames = Section1 = Chembox Identifiers CASNo = 14875 96 8 PubChem = 444098 SMILES = MeSHName = Heme+b Section2 = Chembox Properties Formula = C34H32O4N4Fe MolarMass = 616.487… …   Wikipedia

Share the article and excerpts

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