Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies
Structural and dynamic factors responsible for the themostability of β-glucuronidase (GUS) are analyzed by performing molecular dynamics simulations of human, E. coli, T. maritima and mutated E. coli GUS at 300 K and 353 K. 3D structures of mesophilic and thermophilic GUS enzymes have been construc...
| Main Authors: | , |
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| Format: | Proceeding Paper |
| Language: | English |
| Published: |
2012
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/25988/ http://irep.iium.edu.my/25988/1/IBS2012_GUS_poster.pdf |
| _version_ | 1848779564432490496 |
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| author | Ibrahim Ali , Noorbatcha Hamzah, Mohd. Salleh |
| author_facet | Ibrahim Ali , Noorbatcha Hamzah, Mohd. Salleh |
| author_sort | Ibrahim Ali , Noorbatcha |
| building | IIUM Repository |
| collection | Online Access |
| description | Structural and dynamic factors responsible for the themostability of β-glucuronidase (GUS) are analyzed by performing molecular dynamics simulations of human, E. coli, T. maritima and mutated E. coli GUS at 300 K and 353 K. 3D structures of mesophilic and thermophilic GUS enzymes have been constructed using homology modeling, based on the known crystal structure of human GUS enzyme. The flexibility of backbone atoms and amino acid residues, structural compactness, hydrogen bonds and salt bridges are analyzed during the simulation. The ability of the GUS enzymes to maintain their structural compactness and, similar backbone and residue fluctuations at a range of temperatures is found to be crucial in determining the thermostability. The presence of a large number of Glu-Arg salt bridge pairs stabilizes the structures of T. maritima GUS and mutant E. coli GUS at higher temperatures. The thermolabile residues 150-155 were found to have smaller fluctuations in mutated E. coli GUS.
Keywords: human, E. coli, T. maritima and mutated E. coli β-glucuronidases (GUS); thermostability; molecular dynamics.
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| first_indexed | 2025-11-14T15:19:47Z |
| format | Proceeding Paper |
| id | iium-25988 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:19:47Z |
| publishDate | 2012 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-259882021-06-29T02:46:23Z http://irep.iium.edu.my/25988/ Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies Ibrahim Ali , Noorbatcha Hamzah, Mohd. Salleh TP248.13 Biotechnology Structural and dynamic factors responsible for the themostability of β-glucuronidase (GUS) are analyzed by performing molecular dynamics simulations of human, E. coli, T. maritima and mutated E. coli GUS at 300 K and 353 K. 3D structures of mesophilic and thermophilic GUS enzymes have been constructed using homology modeling, based on the known crystal structure of human GUS enzyme. The flexibility of backbone atoms and amino acid residues, structural compactness, hydrogen bonds and salt bridges are analyzed during the simulation. The ability of the GUS enzymes to maintain their structural compactness and, similar backbone and residue fluctuations at a range of temperatures is found to be crucial in determining the thermostability. The presence of a large number of Glu-Arg salt bridge pairs stabilizes the structures of T. maritima GUS and mutant E. coli GUS at higher temperatures. The thermolabile residues 150-155 were found to have smaller fluctuations in mutated E. coli GUS. Keywords: human, E. coli, T. maritima and mutated E. coli β-glucuronidases (GUS); thermostability; molecular dynamics. 2012 Proceeding Paper NonPeerReviewed application/pdf en http://irep.iium.edu.my/25988/1/IBS2012_GUS_poster.pdf Ibrahim Ali , Noorbatcha and Hamzah, Mohd. Salleh (2012) Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies. In: International Biotechnology Symposium and Exhibition (IBS 2012), 16-21 September 2012, Daegu, Korea. (Unpublished) |
| spellingShingle | TP248.13 Biotechnology Ibrahim Ali , Noorbatcha Hamzah, Mohd. Salleh Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies |
| title | Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies |
| title_full | Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies |
| title_fullStr | Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies |
| title_full_unstemmed | Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies |
| title_short | Insights into Thermostability of β-glucuronidase (GUS) through molecular dynamics studies |
| title_sort | insights into thermostability of β-glucuronidase (gus) through molecular dynamics studies |
| topic | TP248.13 Biotechnology |
| url | http://irep.iium.edu.my/25988/ http://irep.iium.edu.my/25988/1/IBS2012_GUS_poster.pdf |