Crystallization and preliminary X-ray crystallographic analysis of a highly stable mutant V107A of glutathione transferase from Anopheles dirus in complex with glutathione
- Institute of Molecular Biology and Genetics, Mahidol University, Salaya Campus, Nakorn Pathom 73170 (Thailand)
- Department of Biochemistry and Center for Excellence in Protein Structure and Function, Faculty of Science, Mahidol University, Rama 6 Road, Phayathai, Bangkok 10400 (Thailand)
A crystal of an engineered glutathione transferase adgstD4-4 (V107A) from A. dirus, which possesses an enzyme stability that is 32 times greater than the wild type, diffracted to 2.47 Å resolution in space group P3{sub 2}21. An engineered mutant V107A of the dimeric glutathione transferase enzyme from Anopheles dirus (adgstD4-4) was cocrystallized with glutathione substrate using the hanging-drop vapour-diffusion method. The crystal diffracted to 2.47 Å resolution in space group P3{sub 2}21 (unit-cell parameters a = b = 49.4, c = 272.4 Å). Although the crystal morphology differed from that previously obtained for the wild-type enzyme, the crystal packing was the same. At 318 K, the engineered mutant showed an enzyme stability that was increased by about 32-fold, while possessing a similar catalytic function to the wild type. Structural determination will provide valuable understanding of the role of Val107. This residue is in the dimeric interface and appears to contribute towards enhancing the physical properties of the entire protein.
- OSTI ID:
- 22356288
- Journal Information:
- Acta Crystallographica. Section F, Vol. 62, Issue Pt 3; Other Information: PMCID: PMC2197175; PMID: 16511331; PUBLISHER-ID: en5162; OAI: oai:pubmedcentral.nih.gov:2197175; Copyright (c) International Union of Crystallography 2006; Country of input: International Atomic Energy Agency (IAEA); ISSN 1744-3091
- Country of Publication:
- United Kingdom
- Language:
- English
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