Abstract
The uracil-DNA glycosylase inhibitory protein (UGI) from the bacteriophage PBS-1 has been cloned and overexpressed. The nucleotide sequence is identical to that for the previously described PBS-2 inhibitor. The recombinant PBS-1 UGI inhibits the uracil-DNA glycosylase from herpes simplex virus type-1 (HSV-1 UDGase), and a complex between the HSV-1 UDGase and PBS-1 UGI has been crystallized. The crystals have unit cell dimensions a = 143.21 A, c = 40.78 A and are in a polar hexagonal space group. There is a single complex in the asymmetric unit with a solvent content of 62% by volume and the crystals diffract to 2.5A on a synchrotron radiation source.
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