The insect attractant 1-Octen-3-o1 is the natural ligand of bovine odorant-binding protein - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Biological Chemistry Année : 2001

The insect attractant 1-Octen-3-o1 is the natural ligand of bovine odorant-binding protein

Résumé

Bovine odorant-binding protein (bOBP) is a dimeric lipocalin present in large amounts in the respiratory and olfactory nasal mucosa. The structure of bOBP refined at 2.0-Å resolution revealed an elongated volume of electron density inside each buried cavity, indicating the presence of one (or several) naturally occurring copurified ligand(s) (Tegoni et al. (1996)Nat. Struct. Biol. 3, 863–867; Bianchet et al.(1996) Nat. Struct. Biol. 3, 934–939). In the present work, by combining mass spectrometry, x-ray crystallography (1.8-Å resolution), and fluorescence, it has been unambiguously established that natural bOBP contains the racemic form of 1-octen-3-ol. This volatile substance is a typical component of bovine breath and in general of odorous body emanations of humans and animals. The compound 1-octen-3-ol is also an extremely potent olfactory attractant for many insect species, including some parasite vectors likeAnopheles (Plasmodium) or Glossina(Trypanosoma). For the first time, a function can be assigned to an OBP, with a possible role of bOBP in the ecological relationships between bovine and insect species.
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Dates et versions

hal-02677183 , version 1 (31-05-2020)

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Roberto Ramoni, Florence Vincent, Stefano Grolli, Virna Conti, Christian Malosse, et al.. The insect attractant 1-Octen-3-o1 is the natural ligand of bovine odorant-binding protein. Journal of Biological Chemistry, 2001, 276 (10), pp.7150-7155. ⟨10.1074/jbc.M010368200⟩. ⟨hal-02677183⟩
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