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. 23.4, p. 633   | 1 | 2 |

Figure 23.4.4.4 

C. Mattosa* and D. Ringeb

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 23.4.4.4]
Figure 23.4.4.4

Crystal structure of porcine pancreatic elastase represented as a ribbon diagram using MOLSCRIPT (Kraulis, 1991[link]). The two α-helices are shown in green, the β-sheets are in purple and the coils are in grey. Elastase contains 240 amino-acid residues, and is composed of two β-barrel domains. The catalytic triad (Asp108, His60 and Ser203) is shown explicitly. The buried crystallographic water molecules found in 11 superimposed elastase structures solved in a variety of solvents are shown in red.