Crystal Structures of four domain nonribosomal peptide synthetase (only the fourth domain is an alha/beta hydrolase) from Acinetobacter baumannii and Escherichia coli are available (4ZXH, 4ZXI, 5T3D superseed 4ZXJ) and published by Drake et al. Crystal structure of a cloned feruloyl esterase from a soil metagenomic library is available (4ZRS) and published by Cao et al.