A small disturbance, but a serious disease: The possible mechanism of D52H-mutant of human PRS1 that causes gout
Article first published online: 18 MAR 2013
Copyright © 2013 International Union of Biochemistry and Molecular Biology, Inc.
Volume 65, Issue 6, pages 518–525, June 2013
How to Cite
Chen, P., Li, J., Ma, J., Teng, M. and Li, X. (2013), A small disturbance, but a serious disease: The possible mechanism of D52H-mutant of human PRS1 that causes gout. IUBMB Life, 65: 518–525. doi: 10.1002/iub.1154
- Issue published online: 23 MAY 2013
- Article first published online: 18 MAR 2013
- Manuscript Accepted: 31 JAN 2013
- Manuscript Received: 14 JAN 2013
- Chinese Ministry of Science and Technology. Grant Numbers: 2012CB917200, 2009CB825500
- Chinese National Natural Science Foundation. Grant Numbers: 31270014, 31130018, 30900224, 10979039
- Science and Technological Fund of Anhui Province for Outstanding Youth. Grant Number: 10040606Y11
- crystal structure;
Phosphoribosyl pyrophosphate synthetase isoform 1 (PRS1) has an essential role in the de novo and salvage synthesis of human purine and pyrimidine nucleotides. The dysfunction of PRS1 will dramatically influence nucleotides' concentration in patient's body and lead to different kinds of disorders (such as hyperuricemia, gout and deafness). The D52H missense mutation of PRS1 will lead to a conspicuous phosphoribosyl pyrophosphate content elevation in the erythrocyte of patients and finally induce hyperuricemia and serious gout. In this study, the enzyme activity analysis indicated that D52H-mutant possessed similar catalytic activity to the wild-type PRS1, and the 2.27 Å resolution D52H-mutant crystal structure revealed that the stable interaction network surrounding the 52 position of PRS1 would be completely destroyed by the substitution of histidine. These interaction variations would further influence the conformation of ADP-binding pocket of D52H-mutant and reduced the inhibitor sensitivity of PRS1 in patient's body. © 2013 IUBMB Life, 65(6):518–525, 2013.