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Crystallization behaviour of glyceraldehyde dehydrogenase from Thermoplasma acidophilum
I. Iermak, O. Degtjarik, F. Steffler, V. Sieber, I. Kuta Smatanova,
Language English Country United States
Document type Journal Article, Research Support, Non-U.S. Gov't
NLK
Free Medical Journals
from 2014 to 2 years ago
PubMed Central
from 2014 to 1 year ago
Europe PubMed Central
from 2014 to 2 years ago
- MeSH
- Sugar Alcohol Dehydrogenases chemistry MeSH
- X-Ray Diffraction MeSH
- Crystallization MeSH
- Molecular Sequence Data MeSH
- Amino Acid Sequence MeSH
- Thermoplasma enzymology MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
The glyceraldehyde dehydrogenase from Thermoplasma acidophilum (TaAlDH) is a microbial enzyme that catalyzes the oxidation of D-glyceraldehyde to D-glycerate in the artificial enzyme cascade designed for the conversion of glucose to the organic solvents isobutanol and ethanol. Various mutants of TaAlDH were constructed by a random approach followed by site-directed and saturation mutagenesis in order to improve the properties of the enzyme that are essential for its functioning within the cascade. Two enzyme variants, wild-type TaAlDH (TaAlDHwt) and an F34M+S405N variant (TaAlDH F34M+S405N), were successfully crystallized. Crystals of TaAlDHwt belonged to the monoclinic space group P1211 with eight molecules per asymmetric unit and diffracted to a resolution of 1.95 Å. TaAlDH F34M+S405N crystallized in two different space groups: triclinic P1 with 16 molecules per asymmetric unit and monoclinic C121 with four molecules per asymmetric unit. These crystals diffracted to resolutions of 2.14 and 2.10 Å for the P1 and C121 crystals, respectively.
References provided by Crossref.org
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- $a The glyceraldehyde dehydrogenase from Thermoplasma acidophilum (TaAlDH) is a microbial enzyme that catalyzes the oxidation of D-glyceraldehyde to D-glycerate in the artificial enzyme cascade designed for the conversion of glucose to the organic solvents isobutanol and ethanol. Various mutants of TaAlDH were constructed by a random approach followed by site-directed and saturation mutagenesis in order to improve the properties of the enzyme that are essential for its functioning within the cascade. Two enzyme variants, wild-type TaAlDH (TaAlDHwt) and an F34M+S405N variant (TaAlDH F34M+S405N), were successfully crystallized. Crystals of TaAlDHwt belonged to the monoclinic space group P1211 with eight molecules per asymmetric unit and diffracted to a resolution of 1.95 Å. TaAlDH F34M+S405N crystallized in two different space groups: triclinic P1 with 16 molecules per asymmetric unit and monoclinic C121 with four molecules per asymmetric unit. These crystals diffracted to resolutions of 2.14 and 2.10 Å for the P1 and C121 crystals, respectively.
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