Abstract
The monofunctional enzyme 10-formyltetrahydrofolate synthetase (THFS), which is responsible for the recruitment of single carbon units from the formate pool into a variety of folate-dependent biosynthetic pathways, has been subcloned, purified, and crystallized. The crystals belong to space group P21, with unit cell dimensions a= 102.4 Å b= 116.5 Å c= 115.8 Å and β = 103.5 Å. The crystal unit cell and diffraction is consistent with an asymmetric unit consisting of the enzyme tetramer, and a specific volume of the unit cell of 2.7 Å3/Da. The crystals diffract to at least 2.3 Å resolution after flash-cooling, when using a rotating anode x-ray source and an RAXIS image plate detector. © 1997 Wiley-Liss, Inc.
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