Abstract
The priA gene encoding the enzyme phosphoribosyl isomerase from Streptomyces coelicolor, a novel bifunctional enzyme involved in both histidine and tryptophan biosynthesis, was heterologously expressed and purified in Escherichia coli as an N-terminal His-tag fusion. The purified recombinant enzyme was crystallized using the hanging-drop method in 1.50 M ammonium sulfate and 100 mM sodium citrate pH 4.8. Crystals were obtained of up to 0.05 x 0.05 x 0.3 mm in size. A full data set to 2 A resolution was collected at the ESRF beamline ID14-1 and space group P3(1,2)21 was assigned, with unit-cell parameters a = 65.1, c = 104.7 A.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Aldose-Ketose Isomerases* / chemistry*
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Aldose-Ketose Isomerases* / genetics
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Aldose-Ketose Isomerases* / isolation & purification*
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Aldose-Ketose Isomerases* / metabolism
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Bacterial Proteins / chemistry*
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Bacterial Proteins / genetics
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Bacterial Proteins / isolation & purification*
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Bacterial Proteins / metabolism
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Crystallization
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Crystallography, X-Ray
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Gene Expression
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Histidine / biosynthesis
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Histidine / chemistry
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Recombinant Fusion Proteins / chemistry
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Recombinant Fusion Proteins / genetics
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Recombinant Fusion Proteins / isolation & purification
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Recombinant Fusion Proteins / metabolism
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Streptomyces / enzymology*
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Streptomyces / genetics
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Tryptophan / biosynthesis
Substances
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Bacterial Proteins
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Recombinant Fusion Proteins
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Histidine
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Tryptophan
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Aldose-Ketose Isomerases
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ribosephosphate isomerase