rotamern.

Brit.

/ˈrəʊtəmə/, U.S.

/ˈroʊdəmər/

Origin: Formed within English, by compounding. Etymons: rotational adj., -mer comb. form².

Etymology: < rota- (in rotational adj.) + -mer comb. form².S. Newman (in the same source as quot. 1952) attributes the coinage to P. Hay (1952 in a doctoral thesis).

Chemistry.

Any of a number of distinct conformations of a molecule which can be interconverted by rotation of part of the molecule about a particular bond; a rotational isomer.

ΘΚΠ

the world > matter > chemistry > isomerism > [noun] > stereo-isomerism > optical isomerism > optical rotation > rotamer

rotamer1952

1952 M. S. Newman in Rec. Chem. Progr. 13 112/1 For convenience these forms will be called ‘rotamers’.

1963 Chem. & Industry 29 June 1086/1 The single sharp N-methyl signal indicates magnetic averaging of signals and hence very rapid rotamer interconversion even at low temperatures.

1992 New Scientist 9 May 16/1 An amino acid at any point on the backbone can take up about five different orientations, known as rotamers.

2006 J. Xiong Essent. Bioinformatics xv. 218 A collection of preferred side chain conformations is a rotamer library in which the rotamers are ranked by their frequency of occurrence.

This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022).

单词	rotamer
释义	rotamern. Brit. /ˈrəʊtəmə/, U.S. /ˈroʊdəmər/ Origin: Formed within English, by compounding. Etymons: rotational adj., -mer comb. form². Etymology: < rota- (in rotational adj.) + -mer comb. form².S. Newman (in the same source as quot. 1952) attributes the coinage to P. Hay (1952 in a doctoral thesis). Chemistry. Any of a number of distinct conformations of a molecule which can be interconverted by rotation of part of the molecule about a particular bond; a rotational isomer. ΘΚΠ the world > matter > chemistry > isomerism > [noun] > stereo-isomerism > optical isomerism > optical rotation > rotamer rotamer1952 1952 M. S. Newman in Rec. Chem. Progr. 13 112/1 For convenience these forms will be called ‘rotamers’. 1963 Chem. & Industry 29 June 1086/1 The single sharp N-methyl signal indicates magnetic averaging of signals and hence very rapid rotamer interconversion even at low temperatures. 1992 New Scientist 9 May 16/1 An amino acid at any point on the backbone can take up about five different orientations, known as rotamers. 2006 J. Xiong Essent. Bioinformatics xv. 218 A collection of preferred side chain conformations is a rotamer library in which the rotamers are ranked by their frequency of occurrence. This entry has been updated (OED Third Edition, November 2010; most recently modified version published online March 2022). < n.1952
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