Chlorocruorin: Definition from Answers.com

Chlorocruorin is an oxygen carrying blood protein of many annelids, it is noted for appearing green when deoxygenated (as opposed to dark red like hemoglobin), though it is light red when oxygenated. 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.^[1]

References

^ 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.

External links

MeSH chlorocruorin

Proteins: hemeproteins

Globins

Hemoglobin

Subunits	Alpha locus on 16: α (HBA1, HBA2) · ζ (HBZ) · θ (HBQ1) · μ (HBM) Beta locus on 11: β (HBB) · δ (HBD) · γ (HBG1, HBG2) · ε (HBE1)

Tetramers	stages of development: HbA (α₂β₂) · HbA2 (α₂δ₂) · HbF/Fetal (α₂γ₂) · HbE Gower 1 (ζ₂ε₂) · HbE Gower 2 (α₂ε₂) pathology: HbH (β₄) · HbS (α₂β^S₂) · HbC (α₂β^C₂)

Compounds	Carboxyhemoglobin · Carbaminohemoglobin · Oxyhemoglobin/Deoxyhemoglobin · Sulfhemoglobin

Other human	Glycosylated hemoglobin · Methemoglobin

Nonhuman	Chlorocruorin · Erythrocruorin

Other

human: Myoglobin (Metmyoglobin) · Neuroglobin · Cytoglobin
plant: Leghemoglobin

Other

Cytochrome (Cytochrome b, Cytochrome P450) · Hemocyanin · Methemalbumin

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