Chlorocruorin

Chlorocruorin.

Chlorocruorin is an oxygen-binding hemeprotein present in the blood plasma of many annelids, particularly certain marine polychaetes.^[1][2][3] Its affinity for oxygen is weaker than that of most hemoglobins. A dichromatic compound, chlorocruorin is noted for appearing green in dilute solutions, though it appears light red when found in concentrated solutions.^[4][5][6]

Its structure is very similar to erythrocruorin (which is likewise very similar to multiple subunits of myoglobin) and it contains many 16-17kDa myoglobin-like subunits arranged in a giant complex of over a hundred subunits with interlinking proteins as well with a total weight exceeding 3600kDa. Because of its giant macromolecule structure, chlorocruorin is free floating in blood. The only significant difference between chlorocruorin and erythrocruorin is that chlorocruorin carries an abnormal heme group structure.^[7] This enormous macromolecule is typically found free floating in the plasma, and not contained within red blood cells.^[7][8]

References

1. ^ H. Munro Fox (1 April 1933). "The Blood Circulation of Animals Possessing Chlorocruorin". Proceedings of the Royal Society of London (Series B, Biological Sciences) 112 (779): 479–495. doi:10.1098/rspb.1938.0042. JSTOR 81599. 
2. ^ R. F. Ewer, H. Munro Fox (9 August 1940). "On the Function of Chlorocruorin". Proceedings of the Royal Society of London (Series B, Biological Sciences) 129 (855): 137–153. doi:10.1098/rspb.1940.0033. JSTOR 82389. 
3. ^ D.W. Ewer (1941). "The blood systems of Sabella and Spirographis". Quarterly Journal of Microscopical Science 82 (s2): 587–619. http://jcs.biologists.org/cgi/reprint/s2-82/328/587. Retrieved 1 May 2010. 
4. ^ H. Munro Fox (1 February 1926). "Chlorocruorin: A Pigment Allied to Haemoglobin". Proceedings of the Royal Society of London (Series B, Biological Sciences) 99 (696): 199–220. doi:10.1098/rspb.1926.0008. JSTOR 81088. 
5. ^ H. Munro Fox (1 September 1932). "The Oxygen Affinity of Chlorocruorin". Proceedings of the Royal Society of London (Series B, Biological Sciences) 111 (772): 356–363. doi:10.1098/rspb.1932.0060. JSTOR 81716. 
6. ^ H. Munro Fox (19 October 1949). "On Chlorocruorin and Haemoglobin". Proceedings of the Royal Society of London (Series B, Biological Sciences) 136 (884): 378–388. doi:10.1098/rspb.1949.0031. JSTOR 82565. 
7. ^ ^{a b} Pallavicini A, Negrisolo E, Barbato R, et al. (July 2001). "The primary structure of globin and linker chains from the chlorocruorin of the polychaete Sabella spallanzanii". J. Biol. Chem. 276 (28): 26384–90. doi:10.1074/jbc.M006939200. PMID 11294828. http://www.jbc.org/cgi/pmidlookup?view=long&pmid=11294828. 
8. ^ Lamy JN, Green BN, Toulmond A, Wall JS, Weber RE, Vinogradov SN (19 December 1996). "Giant Hexagonal Bilayer Hemoglobins". Chem Rev 96 (8): 3113–3124. doi:10.1021/cr9600058. PMID 11848854. 

External links

• MeSH chlorocruorin

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This protein-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Hemoproteins Annelid stubs Protein stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем написать реферат Micheline Bernardini Human68k Look at other dictionaries: Chlorocruorin — Chlo ro*cru o*rin, n. [Gr. chlwro s light green + E. cruorin.] (Physiol.) A green substance, supposed to be the cause of the green color of the blood in some species of worms. Ray Lankester. [1913 Webster] …   The Collaborative International Dictionary of English Chlorocruorin — Strukturformel der Prosthetischen Gruppe des Chlorocruorin. Chlorocruorin ist das Atmungspigment einiger marin lebender Ringelwürmer. Es liegt in gelöster Form in ihrem Blut vor und ist für dessen gelbgrüne Farbe verantwortlich.[1] Wie beim… …   Deutsch Wikipedia chlorocruorin — n. [Gr. chloros, yellow green; L. cruor, blood] (ANNELIDA: Polychaeta) A green respiratory pigment found in the blood; an iron porphyrin, differing from hemoglobin in one of the side chains, hence green pigment …   Dictionary of invertebrate zoology chlorocruorin — noun a green respiratory pigment found in many annelids …   Wiktionary chlorocruorin — A greenish hemoglobin like pigment found in certain worms; contains a porphyrin differing from protoporphyrin by a formyl group in place of the 2 vinyl group. * * * chlo·ro·cru·o·rin krü ə rən n a green iron containing respiratory pigment related …   Medical dictionary Chlorocruorin — Chloro|cruorin   [k ] das, s, Chloro|kruorin, grünes Atmungspigment, das im Blut einiger Ringelwurmarten vorkommt. Es ist im chemischen Aufbau und in der physiologischen Wirkung dem Hämoglobin sehr ähnlich …   Universal-Lexikon chlorocruorin — chlo·ro·cru·o·rin …   English syllables chlorocruorin — ˌ ̷ ̷ ̷ ̷ˈkrüərə̇n noun ( s) Etymology: chlor + cruorin (old name for hemoglobin), from Latin cruor blood) + English in more at raw : a green iron containing respiratory pigment related chemically to hemoglobin and found in the blood of certain… …   Useful english dictionary annelid — /an l id/, n. 1. any segmented worm of the phylum Annelida, including the earthworms, leeches, and various marine forms. adj. 2. belonging or pertaining to the Annelida. Also, annelidan /euh nel i dn/. [1825 35; see ANNELIDA] * * * Any member of… …   Universalium circulation — circulable /serr kyeuh leuh beuhl/, adj. /serr kyeuh lay sheuhn/, n. 1. an act or instance of circulating, moving in a circle or circuit, or flowing. 2. the continuous movement of blood through the heart and blood vessels, which is maintained… …   Universalium 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”