SDS-PAGE of purified gallic acid decarboxylase from P. agglomerans T71. Lane 1 contained low-molecular-weight marker proteins (molecular weights, 94,000, 67,000, 43,000, and 30,000); the 20.1- and 14.4 kDa markers at the bottom produced one band. Lane 2 contained 2 μg of purified enzyme.