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Partial characterization of rat hepatoma cell-surface glycopeptides possessing concanavalin A receptor activity.
Authors:J M Robinson  D F Smith  E M Davis  E B Gilliam  S C Capetillo  E F Walborg
Affiliation:1. Biochemistry Department, The University of Texas System Cancer Center M. D. Anderson Hospital and Tumor Institute Houston Texas 77030 USA.;2. The Graduate School of Biomedical Sciences, The University of Texas Health Science Center at Houston, Houston Texas 77030 USA.
Abstract:Papain digestion of Novikoff or AS-30D rat hepatoma cells released glycopeptides from the cell surface. That portion of the glycopeptides accessible to Sephadex G-50 was digested with pronase and the component glycopeptides partially resolved by ion-exchange chromatography. Each tumor type yielded two well resolved sialoglycopeptide fractions which possessed concanavalin A receptor activity. The amino acid and saccharide composition of these low molecular weight (3,100 ± 300 daltons) sialoglycopeptides was determined.
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