Tables for
Volume B
Reciprocal space
Edited by U. Shmueli

International Tables for Crystallography (2006). Vol. B. ch. 2.3, p. 251   | 1 | 2 |


M. G. Rossmanna* and E. Arnoldb

aDepartment of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA, and  bCABM & Rutgers University, 679 Hoes Lane, Piscataway, New Jersey 08854-5638, USA
Correspondence e-mail:

Table| top | pdf |
Different types of uses for the rotation function

Type of rotation functionPattersons to be comparedPurpose
[P_{1}] [P_{2}]
Self Unknown structure Unknown structure, same cell Finds orientation of noncrystallographic axes
Cross Unknown structure Unknown structure in different cell Finds relative orientation of unknown molecules
Cross Unknown structure Known structure in large cell to avoid overlap of self-Patterson vectors Determines orientation of unknown structure as preliminary to positioning and subsequent phasing with known molecule