- Structural studies of Streptococcus pneumoniae EPSP synthase in unliganded state, tetrahedral intermediate-bound state and S3P-GLP-bound state. Park, H., Hilsenbeck, J.L., Kim, H.J., Shuttleworth, W.A., Park, Y.H., Evans, J.N., Kang, C. Mol. Microbiol. (2004)