Figure 23.4.5.1

Mattos, C.; Ringe, D.

doi:10.1107/97809553602060000717

International
Tables for
Crystallography
Volume F
Crystallography of biological macromolecules
Edited by M. G. Rossmann and E. Arnold

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International Tables for Crystallography (2006). Vol. F. ch. 23.4, p. 637 | 1 | 2 |

Figure 23.4.5.1

C. Mattos^a ^* and D. Ringe^b

^aDepartment of Molecular and Structural Biochemistry, North Carolina State University, 128 Polk Hall, Raleigh, NC 02795, USA, and ^bRosenstiel Basic Medical Sciences Research Center, Brandeis University, 415 South St, Waltham, MA 02254, USA
Correspondence e-mail: mattos@bchserver.bch.ncsu.edu

Figure 23.4.5.1

van der Waals surface diagram of the water pentagons A, C, D and E in crambin viewed in the negative a direction. Rings A, C and E form a cap around leucine 18. Hydrophobic atoms are shown as dark circles, and water oxygens are shown as light circles. The methyl group of leucine 18 can be seen through the C ring. Adjacent translationally related molecules are shaded. The van der Waals radii used for the protein C, N and O atoms are 1.7, 1.4 and 1.4 Å, respectively, and for water oxygen, 1.8 Å. The larger radius is used for the water oxygens because hydrogen atoms have been omitted. Reprinted with the permission of the author from Teeter (1984).