Beevers molecular models

Beevers molecular model (with permission to be reproduced here), (c) As (b) but edge on view. 

Figure 3.8 The structure of the protein concanavalin-A, a saccharide binding protein, is predominantly p sheet, (a) Beevers molecular model (with permission to be reproduced here). (b) Ribbon diagram (kindly prepared by Dr J. Raftery). Based originally on the coordinates of Reeke, Becker and Edelman (1975). The ribbon representation was introduced by Richardson (1985). The computer program RIBBON was authored by Priestle (1988).

Figure 3.10 (a) A stereo drawing of the Hb tetramer, extracted from the Protein Data Bank based on the work of Perutz and coworkers (Fermi et al 1984). The dots are ordered water molecules. Drawing prepared by Dr J. Rafteiy. (b) A Beevers molecular model of the tetramer (with permission to be reproduced here). 

Figure 3.18 The Watson-Crick double helical structure of DNA illustrated by the crystal structure of an oligonucleotide. (a) Skeletal model representation, in stereo (note the tilting of the base pairs in certain cases this is responsible for causing the DNA double helix to coil up, for example, into the nucleosome, a key component of the chromosome). (b) Space filling representation, in stereo, (c) Beevers molecular model. Figures kindly provided by Dr W. N. Hunter with permission.

Fig. 4. —A Single Chain of i-Carrageenan in the Confonnation Proposed for the Double Helix. [Beevers, miniature, molecular models were assembled to correspond to computed coordinates by Dr. J. W. Campbell. The black balls are carbon atoms, the white are hydrogen atoms, the gray are oxygen atoms, and the speckled are sulfur atoms.]...

Thus this simple model requires all angular time-conelation functions to be equal to X (0- This model accomodates the dielectric and Kerr-effect data for certain viscous molecular liquids, e.g. fluorenone in o-terphenyl (Beevers and co-woricers, 1977b) and tritolyl phosphate (Beevers and co-wotkers, 1977 a). In view of the ami-larities between the o-relaxations of such small-molecule systems and of amorphous polymers it seems possible... 

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