Figure 13.4.2.2

Rossmann, M. G.; Arnold, E.

doi:10.1107/97809553602060000684

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. 13.4, p. 280 | 1 | 2 |

Figure 13.4.2.2

M. G. Rossmann^a ^* and E. Arnold^b

^aDepartment of Biological Sciences, Purdue University, West Lafayette, IN 47907-1392, USA, and ^bBiomolecular Crystallography Laboratory, CABM & Rutgers University, 679 Hoes Lane, Piscataway, NJ 08854-5638, USA
Correspondence e-mail: mgr@indiana.bio.purdue.edu

Figure 13.4.2.2

(a) NCS in a triclinic cell. (b) Superposition of the pattern in (a) on itself after operation with the noncrystallographic fivefold axis. (c) Superposition of the pattern in (a) on itself after a rotation of one-fifth, two-fifths, three-fifths and four-fifths. Note that the sum or product of periodic patterns is aperiodic and in (c) has the point symmetry of the noncrystallographic operation. [Reprinted with permission from Rossmann (1990).]