The oligosaccharides of the Fe(Iii)-Zn(Ii) purple acid- phosphatase of the red kidney bean - determination of the structure by a combination of matrix-assisted laser-desorption ionization mass-spectrometry and selective enzymatic degradation. - Stahl,B..; Klabunde,T..; Witzel,H..; Krebs,B..; Steup,M..; Karas,M..; Hillenkamp,F.. (Eur. J. Biochem., 1994)