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Kinetic analysis of Pseudomonas aeruginosa arginine deiminase mutants and alternate substrates provides insight into structural determinants of function

Authors :
Xuefeng Lu
Ling Li
Rui Wu
Xiaohua Feng
Zhimin Li
Heyi Yang
Canhui Wang
Hua Guo
Galkin, Andrey
Herzberg, Osnat
Mariano, Patrick S.
Martin, Brian M.
Dunaway-Mariano, Debra
Source :
Biochemistry. Jan 31, 2006, Vol. 45 Issue 4, p1162, 11 p.
Publication Year :
2006

Abstract

Contributions made by Pseudomonas aeruginosa (PaADI) core residues Cys406, His278, and Asp166 and the contribution from Asp280 to catalysis of the formation and hydrolysis of the Cys406-alkyluronium intermediate were assessed by kinetic analysis of site-directed mutants. The results suggest that electrostatic interactions play a dominant role in PaADI catalysis.

Details

Language :
English
ISSN :
00062960
Volume :
45
Issue :
4
Database :
Gale General OneFile
Journal :
Biochemistry
Publication Type :
Academic Journal
Accession number :
edsgcl.145038579