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

International Tables for Crystallography (2006). Vol. F. ch. 12.1, p. 252   | 1 | 2 |

Figure 12.1.5.2 

D. Carvin,a S. A. Islam,b M. J. E. Sternbergb and T. L. Blundellc*

aBiomolecular Modelling Laboratory, Imperial Cancer Research Fund, 44 Lincoln's Inn Field, London WC2A 3PX, England,bInstitute of Cancer Research, 44 Lincoln's Inn Fields, London WC2A 3PX, England, and cDepartment of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, England
Correspondence e-mail:  tom@cryst.bioc.cam.ac.uk

[Figure 12.1.5.2]
Figure 12.1.5.2

Mercuric ions replace zinc in thermolysin (3TLN). The mercuric ion is shown superposed on the parent crystal structure; notice that the mercuric ion is slightly displaced from the zinc position due to its larger ionic radius.