Updated project metadata. This project reports the characterization of the lactate racemase system in Lactobacillus plantarum. The lactate racemase (LarA) is a nickel-dependent enzyme. The apo-enzyme (apoLarA) is activated by a single nickel-containing maturation protein (LarE) that requires preactivation by two other accessory proteins (LarC which is a fusion between LarC1 and LarcC2 and LarB). Data submitted here identify the purified forms of Lar proteins.