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Odour-binding protein oV Receptor proteins Ca2+ ion channel [Pg.221]

Another possible mechanism is the transport of odorant molecules across the mucus by odour-binding proteins (OBPs). These proteins are known to be present in the mucus and are known to bind odorants. It is possible that the OBPs could deliver the odorants to the receptor proteins or that the receptor proteins actually bind to an OBP-odorant complex. The former is the more generally accepted hypothesis. In either case, it is possible that the OBPs are involved in recognition since there are distinct classes of OBP and their affinities for odorants and for different receptor proteins are expected to be different. [Pg.222]

The gene family that encodes the receptor proteins is the largest in the genome. Potentially, there are thousands of different receptor proteins. However, not all are expressed in any one species and those [Pg.222]

Further information on the biochemistry of olfaction can be found in the excellent review by Heinz Breer et al. (1994) of Hohenheim University, Stuttgart. [Pg.223]

Odour has three properties, viz. character, intensity and persistence. All three are subjective and can only be measured in sensory terms. Most correlation work has been done on character since it is, superficially, the easiest to measure. However, the description of an odour is associative, since we have no hard reference points. Difficulties in finding correlations can arise from the use of odour classification systems. For instance, in our fragrance work, we found that the use of the term fruity to describe an odour family led to confusion, since the criteria for a molecule to possess an apple odour are not the same as those for pear. We classify the two together because of the similarity of the botanical sources, but this is not necessarily related to the odour properties. To study structure-odour correlations, we must therefore ensure that we are using meaningful parameters. [Pg.223]


Another example of deahng with molecular structure input/output can be found in the early 1980s in Boehiinger Ingelheim. Their CBF (Chemical and Biology Facts) system [44] contained a special microprocessormolecular structures. Moreover, their IBM-type printer chain unit had been equipped with special chemical characters and it was able to print chemical formulas. [Pg.44]

Only someone who denied the thesis of physicalism - that the physical facts fix all the biological facts - could deny the causal relevance of this vast motley of disparate macromolecular processes to the existence of (PS) and the truth of (G). [Pg.133]

Nativists contend that genetically determined traits are characteristic of specific racial groups and that cultures themselves can be reduced to biological characteristics. Extremists have opposed immigration with arguments that the inferiority of some races is a biological fact based on evolutionary... [Pg.309]

However, the split between monistic and dualistic systems of belief often borders along the concept of supervenience (characterization of a relation that emergent properties bear to their base properties), see also Ref. [6] for a modern appraisal. To use philosophical relationship terminology if one states that biology (naturally) supervenes on physics, i.e., when physical (spatiotemporal) facts about the world determine biological facts, it is nevertheless called into question whether biology logically supervenes... [Pg.35]

Why do babies have so much REM sleep What shuts the system down as development proceeds These important questions have not yet been answered definitively because the study of sleep development is still (please pardon the expression) in its infancy But, it is very likely that the following biological facts hold true ... [Pg.69]

Lichtlen, P. and W. Schaffner. The metal transcription factor MTF-1 biological facts and medical implications. Swiss Med. Wkly 131 647- 652, 2001. [Pg.37]

Kohrl J, Brigelius-Fole R, Bock A, Gartner R,Meyer O, Flohe L (2000) Selenium in biology facts and medical perspectives. Biol Chem 381 849-864... [Pg.232]

This at first sounds quite odd. If a drug performs as expected, why shouldn t the trial always show a statistically significant benefit if the trial was designed correctly The answer lies in the concept of a sample, and in a biological fact of life called unexplained variability. [Pg.274]

J. Wakefield, The concept of mental disorder On the boundary between biological facts and social values, American Psychologist, 47 373—388, 1992. [Pg.178]

Pure biological facts can be understood in the context of dynamic behavior. [Pg.1047]

Philosophers of science can stop wonying about how to reduce the higher-level sciences to some lower level. Each branch of science can retain its status as a legitimate branch of study with its own domain of inquiry. Biologists can study biological facts... [Pg.163]

Antioxidants in Food and Biology Facts and Fiction (2007) Lipids Structure, Physical Properties and Functionality (2006) Lipid Oxidation - Second Edition (2005)... [Pg.246]


See other pages where Biological Facts is mentioned: [Pg.125]    [Pg.159]    [Pg.40]    [Pg.44]    [Pg.140]    [Pg.142]    [Pg.248]    [Pg.249]    [Pg.292]    [Pg.274]    [Pg.246]    [Pg.72]    [Pg.113]    [Pg.138]    [Pg.15]    [Pg.220]    [Pg.614]    [Pg.121]    [Pg.109]    [Pg.416]    [Pg.211]    [Pg.271]    [Pg.11]    [Pg.26]    [Pg.106]    [Pg.346]    [Pg.19]    [Pg.313]    [Pg.260]    [Pg.510]    [Pg.515]   


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