Fig. 2From: RETRACTED ARTICLE: Substrates specificity of tannase from Streptomyces sviceus and Lactobacillus plantaruma The purified tannases were analyzed with 12% SDS-PAGE. M: molecular mass of standards; (1) LP-tan; (2) LP-tan variant; (3) SS-tan; (4) SS-tan variant. b Activities of site-directed mutagenesis of SS-tan relative to wild-type of SS-tan. Tannic acid was used as the substrate and each measurement was performed in quintuplicateBack to article page