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The insect attractant 1-Octen-3-o1 is the natural ligand of bovine odorant-binding protein Inra
Ramoni, R.; Vincent, F.; Grolli, S.; Conti, V.; Malosse, C.; Boyer, F.D.; Nagnan-Le Meillour, P.; Spinelli, S.; Cambillau, C.; Tegoni, M..
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...
Tipo: Journal Article Palavras-chave: TECHNIQUE ANALYTIQUE; SPECTROMÉTRIE DE MASSE; CHROMATOGRAPHIE EN PHASE GAZEUSE; STRUCTURE TRIDIMENSIONNELLE; LIGAND FLUORESCENCE SPECTROSCOPY; URINARY PROTEINS; NASAL-MUCOSA; AFFINITIES; MECHANISM; LIPOCALIN; MOSQUITOS; RECEPTOR.
Ano: 2001 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PUB0200012319094103&uri=/notices/prodinra1/2010/10/
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Structure and stability of a rat odorant-binding protein: another brick in the wall Inra
Scire, A.; Marabotti, A.; Staiano, M.; Briand, L.; Varriale, A.; Bertoli, E.; Tanfani, F.; D’Auria, S..
The effect of temperature on the structure of the rat odorant-binding protein was investigated by spectroscopic and in silico methodologies. In particular, in this work, we examined the structural features of the rat OBP-1F by Fourier-transform infrared spectroscopy and molecular dynamics investigations. The obtained spectroscopic results were analyzed using the following three different methods based on the unexchanged amide hydrogens of the protein sample: (1) the analysis of difference spectra; (2) the generalized 2D-IR correlation spectroscopy; (3) the phase diagram method. The three methods indicated that at high temperatures the rOBP-1F structure undergoes a relaxation process involving the protein tertiary organization before undergoing the...
Tipo: Journal Article Palavras-chave: ODORANT-BINDING PROTEIN; FOURIER TRANSFORM INFRARED SPECTROSCOPIE; LIPOCALIN.
Ano: 2009 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD2010bef21c07&uri=/notices/prodinra1/2010/07/
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