Download MendeleyThe structure and function of the 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase from Haemophilus influenzae.
Hennig, M., Dale, G.E., D'arcy, A., Danel, F., Fischer, S., Gray, C.P., Jolidon, S., Muller, F., Page, M.G., Pattison, P., Oefner, C.(1999) J Mol Biol 287: 211-219
- PubMed: 10080886
- DOI: https://doi.org/10.1006/jmbi.1999.2623
- Primary Citation of Related Structures:
1CBK - PubMed Abstract:
The gene encoding the 6-hydroxymethyl-7,8-dihydropterin pyrophosphokinase of Haemophilus influenzae has been cloned and expressed in Escherichia coli. A complex of the purified protein with a substrate analog has been crystallized and its structure solved by multiple anomalous dispersion using phase information obtained from a single crystal of selenomethione-labeled protein. The enzyme folds into a four-stranded antiparallel beta-sheet flanked on one side by two alpha-helices and on the other by three consecutive alpha-helices, giving a novel beta1alpha1beta2beta3alpha2beta4alpha3alpha4alpha5 polypeptide topology. The three-dimensional structure of a binary complex has been refined at 2.1 A resolution. The location of the substrate analog and a sulfate ion gives important insight into the molecular mechanism of the enzyme.
Organizational Affiliation:
F. Hoffmann-La Roche Ltd, Pharma Preclinical Research, Basel, CH-4070, Switzerland.
