X-ray intensity statistics of a pair of related crystals

Ramachandran, G. N. ; Srinivasan, R. (1963) X-ray intensity statistics of a pair of related crystals Nature, 200 (4911). pp. 1090-1091. ISSN 0028-0836

Full text not available from this repository.

Official URL: http://www.nature.com/nature/journal/v200/n4911/ab...

Related URL: http://dx.doi.org/10.1038/2001090a0


We have been investigating the problem of the probability distributions connected with the X-ray intensities of two crystals. Two ideal situations may be considered: (a) when the two crystals are fully related, that is, when the atoms in one form a part of the atoms in the other; (b) when they are unrelated, that is, when the atoms in the two structures are in entirely different positions. It is of course assumed that the two unit cells are exactly the same or very nearly so. When a protein crystal and its heavy atom derivative form an isomorphous pair, they are related in the foregoing sense, and the present investigation has resulted in the formulæ which could be used to test the isomorphism of such a pair of crystals. The term 'relatedness' is used in preference to 'isomorphism' for the more general concept, following the suggestion of some senior crystallographers.

Item Type:Article
Source:Copyright of this article belongs to Nature Publishing Group.
ID Code:34828
Deposited On:01 Apr 2011 13:21
Last Modified:21 Apr 2011 12:13

Repository Staff Only: item control page