Related Experiment Videos
Crystal structure of human cathepsin V
J R Somoza1, H Zhan, K K Bowman
1Axys Pharmaceuticals, Inc., 385 Oyster Point Boulevard, Suite 1, South San Francisco, California 94080, USA. john_somoza@axyspharm.com
Biochemistry
|October 12, 2000
Summary
We determined the crystal structure of human Cathepsin V, a cysteine protease, bound to a vinyl sulfone inhibitor. This reveals structural details to aid in designing specific Cathepsin V inhibitors.
Area of Science:
- Biochemistry
- Structural Biology
- Enzymology
Background:
- Cathepsin V is a lysosomal cysteine protease found in thymus, testis, and corneal epithelium.
- Cysteine proteases are crucial enzymes involved in various biological processes.
Purpose of the Study:
- To determine the high-resolution crystal structure of human Cathepsin V.
- To understand the structural basis of Cathepsin V activity.
- To provide a framework for designing specific Cathepsin V inhibitors.
Main Methods:
- X-ray crystallography at 1.6 A resolution.
- Complex formation with an irreversible vinyl sulfone inhibitor.
Main Results:
- The crystal structure of human Cathepsin V with a vinyl sulfone inhibitor was determined.
- The enzyme's fold is similar to other papain superfamily cysteine proteases.
- Differences in the S2 and S3 subsites compared to related proteases were identified.
Conclusions:
- The determined structure provides insights into Cathepsin V's activity.
- Structural differences can be exploited for developing selective Cathepsin V inhibitors.
- This work aids in the rational design of enzyme inhibitors.