L-Rhamnose isomerase (L-RhI) from B. halodurans has been purified and crystallized. The crystals of L-RhI belonged to the monoclinic space group P2₁, with unit-cell parameters a = 83.2, b = 164.9, c = 92.0 Å, β = 116.0°, and diffracted to 2.5 Å resolution.

Bacterial blight, an infectious disease caused by X. oryzae pv. oryzae (Xoo), causes huge rice-production losses in most rice-cultivating countries. The co-chaperonin of Xoo, XoGroES, an important protein for protein folding, was cloned from Xoo, purified and crystallized for atomic resolution structure determination.

Glutamyl-tRNA synthetase (GluRS) is an essential enzyme for protein translation and has been considered as a target for drug development. In this paper, the cloning, expression and purification of the GluRS protein encoded by the gltX gene (Xoo1504) and its preliminarily crystallographic analysis are reported.

Xoo0352, which encodes D-alanine-D-alanine ligase A (DdlA), from X. oryzae pv. oryzae was cloned, purified and crystallized. Preliminary X-ray crystallographic analysis of DdlA crystals was performed.

β-Ketoacyl-acyl carrier protein synthase I (XoFabB) from X. oryzae pv. oryzae (Xoo) plays a crucial role in fatty-acid synthesis and has been considered as a target for the development of antibacterial agents against Xoo. XoFabB was expressed, purified and crystallized to determine its atomic resolution structure.

The planar pyrazolidine ring occurs in the betaine form with a Z conformation of the exocyclic C=N bond. In the crystal, C—HO and C—Hπ inter­actions result in the formation of ribbons of mol­ecules along [10].