Fig. 8From: Mechanism of microbial production of acetoin and 2,3-butanediol optical isomers and substrate specificity of butanediol dehydrogenaseStructure-related sequence alignment between BDH and DAR. The amino acid sequence was derived from UniProt, GenBank, and KEGG databases. The sequence structure information was derived from the PDB database and visualized using the ESPript 3 network tool. (A) Structure-related sequence alignment between R-BDH. The black pentagram is the binding site of catalytic zinc. The blue pentagram is a coenzyme-binding motif. (B) Structure-related sequence alignment among S-BDH, meso-BDH and DAR. The red triangle is a coenzyme binding motif. The black triangle is the active center motifBack to article page