Proteophosphoglycans of Leishmania mexicana. Identification, purification, structural and ultrastructural characterization of the secreted promastigote proteophosphoglycan pPPG2, a stage-specific glycoisoform of amastigote aPPG. C. Klein, U. Göpfert, N. Goehring, Y. D. Stierhof and T. Ilg. Biochemical Journal 344:775-86(1999). PDF