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Engineering Enzyme Stability and Resistance to an Organic Cosolvent by Modification of Residues in the Access Tunnel
Autoři | |
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Rok publikování | 2013 |
Druh | Článek v odborném periodiku |
Časopis / Zdroj | Angewandte Chemie International Edition |
Fakulta / Pracoviště MU | |
Citace | |
Doi | http://dx.doi.org/10.1002/anie.201206708 |
Obor | Biochemie |
Klíčová slova | haloalkan dehalogenases |
Popis | Mutations targeting as few as four residues lining the access tunnel extended enzyme’s half-life in 40% dimethyl sulfoxide from minutes to weeks (4,000-fold) and increased its melting temperature by 19 Grades C. Protein crystallography and molecular dynamics revealed that the tunnel residue packing is a key determinant of protein stability and the active-site accessibility for co-solvent molecules (red dots). The broad applicability of this concept was verified by analyzing twenty six proteins with buried active sites from all six enzyme classes. |
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