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. 2004 Oct;13(10):2693–2705. doi: 10.1110/ps.04792204

Figure 1.

Figure 1.

Structure of methionine and its analogs optimized using quantum mechanics with the Poisson-Boltzman solvation method. These structures have been used as starting structures for HierDock calculations. MET, L-Methionine; HAG, homoallylglycine; HPG, homopropargylglycine; NLEU, norleucine; TCG, trans-crotglycine; and CCG, cis-crotglycine (ccg). (+) Indicates that these analogs of methionine get incorporated into proteins by in vivo experiments (Kiick et al. 2001).