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Overexpression, purification, crystallization and preliminary X-ray diffraction analysis of the receiver domain of PhoB.

PhoB is the response regulator of the E. coli two-component signal transduction system for phosphate regulation. It is a transcription factor that activates more than 30 genes of the pho regulon. Crystals of the receiver domain of PhoB were obtained by applying the hanging-drop vapour-diffusion method. X-ray diffraction data have been collected using synchrotron radiation to 1.88 A resolution. The crystals belong to the orthorhombic space group P212121 with unit-cell constants a = 34.11, b = 60.42, c = 119.97 A. The Matthews parameter suggests that PhoB crystallizes with two molecules per asymmetric unit, suggesting that activating dimerization occurs in the crystal.[1]

References

  1. Overexpression, purification, crystallization and preliminary X-ray diffraction analysis of the receiver domain of PhoB. Sol, M., Gomis-Rüth, F., Guasch, A., Serrano, L., Coll, M. Acta Crystallogr. D Biol. Crystallogr. (1998) [Pubmed]
 
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