The attachment of poly(ribitol phosphate) to lipoteichoic acid carrier |
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Authors: | F Fiedler L Glaser |
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Institution: | Laboratory for Carbohydrate Research, Departments of Biological Chemistry and Medicine, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts 02114 U. S. A. |
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Abstract: | 2-Acetamido-3,4,6-tri-O-acetyl-1-N-N-(benzyloxycarbonyl)-L-aspart-1-oyl-(L-leucyl-L-threonyl-N2-tosyl-L-lysine p-nitrobenzyl ester)-4-oyl]-2-deoxy-β-D-glucopyranosylamine (21) and 2-acetamido-3,4,6-tri-O-acetyl-1-N-N-(benzyloxycarbonyl)-L-aspart-1-oyl-(L-leucyl-L-threonyl-N2-tosyl-L-lysine p-nitrobenzyl ester)-4-oyl]-2-deoxy-β-D-glucopyranosylamine (22), 2-acetamido-3,4,6-tri-O-acetyl-1-N-N-(benzyloxycarbonyl)-L-aspart-1-oyl-(glycine ethyl ester)-4-oyl]-2-deoxy-β-D-glucopyranosylamine, and 2-acetamido-3,4,6-tri-O-acetyl-1-N-N-(benzyloxycarbonyl)-L-aspart-1-oyl-(phenylalanine methyl ester)-4-oyl]-2-deoxy-β-D-glucopyranosylamine were synthesized by condensation of 2-acetamido-3,4,6-tri-O-acetyl-1-N-N-(benzyloxycarbonyl)-L-aspart-4-oyl]-2-deoxy-β-D-glucopyranosylamine with the appropriate protected amino acids and tri- and tetra-peptides. The amino acid sequences of 21 and 22 correspond to the protected amino acid sequences 34–37 and 34–38 of ribonuclease B that are adjacent to the carbohydrate-protein linkage. |
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Keywords: | To whom correspondence should be addressed |
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