Keywords: Beta-galactosidase (1tg7).png Beta-galactosidase from Penicillum sp Own edit of image from http //www pdb org/pdb/explore do structureId 1TG7 2006-12-26 www pdb org see http //www pdb org/robohelp_f/ site_navigation/citing_the_pdb htm this site PD-USGov Proteins |