chlorocruorin

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chlorocruorin

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From chloro- +‎ cruor +‎ -in (see also cruorin). Named by British zoologist Ray Lankester in 1868.

chlorocruorin (uncountable)

1. (biochemistry, organic chemistry) A green respiratory pigment found in many annelids.
   • 1966, David Keilin, edited by Joan Keilin, The History of Cell Respiration and Cytochrome, University of Cambridge, page 174:

     Later it was shown that the α-bands of the pyridine haemochromogens of both cytochrome a and chlorocruorin resemble each other closely (Keilin, 1933 a).

   • 2003, Ashok Kumar, Animal Physiology, Discovery Publishing House, page 192:

     The affinity of chlorocruorin for oxygen is equivalent to the haemoglobin. It is interesting that within the same family of worms like [S]abellidae, [S]erpulidae and [A]mphotritidae same species have chlorocruorin while others have haemoglobin.

   • 1992, N. B. Terwilliger, Chapter 8: Molecular Structure of the Extracellular Heme Proteins, Ch. P. Mangum (editor), Advances in Comparative & Environmental Physiology 13: Blood and Tissue Oxygen Carriers, Springer-Verlag, 1992 softcover reprint, page 203,

     It was earlier thought that chlorocruorin was very different from hemoglobin based on a subunit structure with a mass of 34-35 kDa (Antonini et al. 1962; Guerratore and Zito 1977). Some writers have questioned the value of drawing a distinction between the chlorocruorins and hemoglobins, especially from an evolutionary point of view (Mangum 1985; see also Toulson, Chap. 9, this Vol.). The visual phenomenon of green blood has perhaps led to a stronger distinction between chlorocruorin and hemoglobin than warranted.

• haemoprotein

• chlorocruorohaem, chlorocruoroheme
• cruorin

• haemocyanin
• haemerythrin
• haemoglobin

• Hemeprotein on Wikipedia.Wikipedia