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Isolation and purification of Thermus thermophilus HpaB by a crystallization approach.

ABSTRACT: The oxygenase HpaB is a component of the 4-hydroxyphenylacetate 3-monooxygenase enzyme that is responsible for the hydroxylation of 4-hydroxyphenylacetate. It utilizes molecular oxygen and a reduced flavin, which is provided by HpaC, the second component of the enzyme. While isolating integral membrane respiratory complexes from Thermus thermophilus, microcrystals of HpaB were formed. Further purification of the enzyme was achieved by repetitive crystallization. Subsequently, well shaped single crystals of the native enzyme that diffract to 1.82 A resolution were grown in sitting drops. They belong to the orthorhombic space group I222, with unit-cell parameters a = 91.3, b = 99.8, c = 131.7 A.

SUBMITTER: Soulimane T

PROVIDER: S-EPMC2833055 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature

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Isolation and purification of Thermus thermophilus HpaB by a crystallization approach.

Soulimane Tewfik T O'Kane Sarah R SR Kolaj Olga O

Acta crystallographica. Section F, Structural biology and crystallization communications 20100227 Pt 3

The oxygenase HpaB is a component of the 4-hydroxyphenylacetate 3-monooxygenase enzyme that is responsible for the hydroxylation of 4-hydroxyphenylacetate. It utilizes molecular oxygen and a reduced flavin, which is provided by HpaC, the second component of the enzyme. While isolating integral membrane respiratory complexes from Thermus thermophilus, microcrystals of HpaB were formed. Further purification of the enzyme was achieved by repetitive crystallization. Subsequently, well shaped single ...[more]

PMID: 20208179

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Cloning, overexpression, purification and crystallization of malate dehydrogenase from Thermus thermophilus.

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Crystallization and preliminary X-ray analysis of the oxygenase component (HpaB) of 4-hydroxyphenylacetate 3-monooxygenase from Thermus thermophilus HB8.

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| S-EPMC2330224 | biostudies-literature

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