Cloning, overproduction, purification and crystallization of the DNA binding protein HU from the hyperthermophilic eubacterium Thermotoga maritima.
The humar gene encoding for the histone-like DNA-binding protein HU from the hyperthermophilic eubacterium Thermotoga maritima was efficiently overexpressed in Escherichia coli under the T7 promoter. The HU protein was purified using SP-Sepharose ion-exchange and heparin-affinity chromatography and was successfully crystallized in ammonium sulfate. The crystals were grown in the tetragonal form in space group P43 or P41 and have unit-cell dimensions a = b = 46.12, c = 77.56 A, alpha = beta = gamma = 90 degrees. The crystals diffract X-rays to 1.6 A resolution using synchrotron radiation and are suitable for determination of the HU structure at high resolution.
Christodoulou
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European Molecular Biology Laboratory, c/o DESY, Notkestrasse 85, 22603 Hamburg, Germany.
Vorgias
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CE
D001419:Bacteria / Q000737:chemistry*; D001426:Bacterial Proteins / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D003001:Cloning, Molecular; D003460:Crystallization; D018360:Crystallography, X-Ray; D004268:DNA-Binding Proteins / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D011487:Protein Conformation; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000302:isolation & purification
D001426:Bacterial Proteins; D004268:DNA-Binding Proteins; D011993:Recombinant Fusion Proteins; C040330:histone-like protein HU, bacteria