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Hoogerhout P, Guis CP, Erkelens C, Bloemhoff W, Kerling KET, van Boom JH. Synthesis of the glycotripeptide alanyl-(O
-β-D-galactopyranosylseryl)-alanine using (9-fluorenylmethoxy)carbonyl and esters of 2-(hydroxymethyl)-9,10-anthraquinone as temporary protecting groups. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19851040205] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Eniade A, Ben RN. Fully convergent solid phase synthesis of antifreeze glycoprotein analogues. Biomacromolecules 2003; 2:557-61. [PMID: 11749220 DOI: 10.1021/bm0155120] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The convergent solid phase synthesis of C-linked analogues of antifreeze glycoprotein (AFGP) has been achieved. In this approach, three to six carbohydrate residues are simultaneously coupled to a resin-bound polypeptide. Glycopeptides ranging from 1.6 to 3.0 kDa are easily prepared in 26-44% yield demonstrating the utility of this approach.
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Affiliation(s)
- A Eniade
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, USA
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4
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Koto S, Asami K, Hirooka M, Nagura K, Takizawa M, Yamamoto S, Okamoto N, Sato M, Tajima H, Yoshida T, Nonaka N, Sato T, Zen S, Yago K, Tomonaga F. Glycosylation Using 2-Azido-3,4,6-tri-O-benzyl-2-deoxy-D-glucose, -galactose, and -mannose with the Aid ofp-Nitrobenzenesulfonyl Chloride–Silver Trifluoromethanesulfonate–Triethylamine System. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1999. [DOI: 10.1246/bcsj.72.765] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Sakai S, Shigemasa Y, Sasaki T. A self-adjusting carbohydrate ligand for GalNAc specific lectins. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10187-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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8
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Piperidine is preferred to morpholine for Fmoc cleavage in solid phase glycopeptide synthesis as exemplified by preparation of glycopeptides related to HIV gp120 and mucins. Tetrahedron 1996. [DOI: 10.1016/0040-4020(96)00369-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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9
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Chapter 4 Chemical Synthesis of Glycopeptides. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/s0167-7306(08)60588-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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10
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Toyokuni T, Hakomori S, Singhal AK. Synthetic carbohydrate vaccines: synthesis and immunogenicity of Tn antigen conjugates. Bioorg Med Chem 1994; 2:1119-32. [PMID: 7757411 DOI: 10.1016/s0968-0896(00)82064-7] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A tumor-associated carbohydrate antigen, Tn antigen (GalNAc alpha 1-->O-Ser), was synthesized with a spacer arm, and assembled to dimeric and trimeric structures using N-tert-butyloxycarbonyl-O-(2-acetamido-3,4,6-tri-O-acetyl-2-deoxy-alpha- D-galactopyranosyl)-L-serine as a key building block. The synthetic antigens were conjugated with OSA and their immunogenicity examined in mice. Mice immunized with dimeric or trimeric Tn antigen showed a stronger antibody (IgM) response to a Tn-glycoprotein (asialo-ovine submaxillary mucin) than mice immunized with monomeric Tn antigen. The dimeric and trimeric Tn antigens also induced measurable IgG responses. The dimeric Tn antigen was further coupled to a Starburst dendrimer (5th generation) and to tripalmitoyl-S-glycerylcysteinyl-serine, a synthetic lipopeptide of the active moiety of a major lipoprotein of Escherichia coli. Unexpectedly, the Starburst dendrimer conjugate did not stimulate any immune response specific to Tn antigen. On the other hand, immunization of mice with the lipopeptide conjugate produced not only a high IgM response but also significant IgG anti-Tn response without any carrier molecules or additional adjuvants. The production of IgG antibody is quite significant since carbohydrate antigens are in general known to produce only IgM antibody response. Being a totally synthetic, low-molecular weight, and carrier-free immunogen, the lipopeptide conjugate could be a prototype of synthetic carbohydrate vaccines.
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Affiliation(s)
- T Toyokuni
- Biomembrane Institute, Seattle, Washington 98119, USA
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11
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Otvos L, Urge L, Xiang ZQ, Krivulka GR, Nagy L, Szendrei GI, Ertl HC. Glycosylation of synthetic T helper cell epitopic peptides influences their antigenic potency and conformation in a sugar location-specific manner. BIOCHIMICA ET BIOPHYSICA ACTA 1994; 1224:68-76. [PMID: 7524686 DOI: 10.1016/0167-4889(94)90114-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The immunodominant T helper cell epitopes 31D and VF13N of rabies virus nucleoprotein and glycoprotein, respectively, correspond to peptide sequences AVYTRIMMNGGRLKR and VVEDEGCTNLSGF, and are expressed between amino acids 404-418 and 29-41, of the appropriate proteins. We investigated how internal or external glycosylation affects the biological activity and conformation of the peptides 31D and VF13N. Mid-chain incorporation of maltobiose or N-acetylglucosamine moieties into the asparagine residues greatly diminished the T-cell stimulatory activity in vitro (due to the diminished ability of the glycopeptides to bind to major histocompatibility complex determinants) and reduced the characteristic alpha-helicity of the peptides in aqueous trifluoroethanol solutions. In contrast, addition of maltobiose- or N-acetylglucosamine-coupled asparagines to the N-termini of peptides 31D and VF13N resulted in unchanged T-cell activity. Furthermore, N-terminal glycosylation of peptide 31D, as indicated by the functional assay, decreased the sensitivity of the peptide to degradation in human serum and did not affect the alpha-helical conformation. These data indicate that glycosylation of T-cell epitopes is not a preferable method for the preparation of antagonists, but incorporation of the sugars to appropriate positions may be advantageous in the design of T-cell agonists and peptide-based vaccines.
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Affiliation(s)
- L Otvos
- Wistar Institute, Philadelphia, PA 19104
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Meldal M, Bielfeldt T, Peters S, Jensen KJ, Paulsen H, Bock K. Susceptibility of glycans to beta-elimination in Fmoc-based O-glycopeptide synthesis. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1994; 43:529-36. [PMID: 7928083 DOI: 10.1111/j.1399-3011.1994.tb00554.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In order to investigate the possible extent of beta-elimination occurring in Fmoc-based continuous-flow solid-phase glycopeptide synthesis, the influence of the pKb of the base used for N alpha-deprotection has been studied. A glycosylated pentapeptide was synthesized using 50% morpholine, 10% piperidine or 2% DBU, respectively, in DMF for deprotection. The dehydropentapeptide N alpha-Ac-Thr-Thr-delta Aba-Val-Thr-NH2, which would be formed in the case of beta-elimination, was prepared independently and used as a control in HPLC analysis; however, this product was not formed under any of the deprotection conditions applied. Furthermore, a 23 amino acid long glycopeptide from human intestinal mucin was prepared using 2% DBU as a base for Fmoc cleavage, and similarly no beta-elimination was observed. The glycopeptide products were subjected to a prolonged treatment with sodium hydroxide in methanol/water without significant formation of byproducts, and the pure glycopeptides were isolated and characterized by 1H-NMR spectroscopy.
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Affiliation(s)
- M Meldal
- Carlsberg Laboratory, Department of Chemistry, Valby, Copenhagen, Denmark
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13
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Paulsen H, Bielfeldt T, Peters S, Meldal M, Bock K. Eine neue Strategie zur Festphasensynthese vonO-Glycopeptiden über 2-Azidoglycopeptide. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/jlac.199419940410] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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14
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Hanessian S, Hori H, Tu Y, Boulanger Y. Conformational analysis of the carbohydrate portion of T and TN haptens by NMR spectroscopy and molecular modeling. Tetrahedron 1994. [DOI: 10.1016/s0040-4020(01)80738-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Affiliation(s)
- T Norberg
- Department of Chemistry, Swedish University of Agricultural Science, Uppsala
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16
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Garg HG, von dem Bruch K, Kunz H. Developments in the synthesis of glycopeptides containing glycosyl L-asparagine, L-serine, and L-threonine. Adv Carbohydr Chem Biochem 1994; 50:277-310. [PMID: 7942256 DOI: 10.1016/s0065-2318(08)60153-5] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- H G Garg
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston 02114
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17
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Matsubara K, Mukaiyama T. Catalytic Stereoselective Synthesis of 2-Amino-2-Deoxy-α-D-Glucopyranosides and Galactopyranosides. CHEM LETT 1993. [DOI: 10.1246/cl.1993.2145] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Piperidine is preferable to morpholine for Fmoc cleavage in solid phase synthesis of O-linked glycopeptides. Tetrahedron Lett 1993. [DOI: 10.1016/s0040-4039(00)61749-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Matsubara K, Mukaiyama T. Stereoselective Synthesis of O-(2-Azido-2-deoxy-α-D-galactopyranosyl)-L-serine and -L-threonine Derivatives by Using the Catalytic Amount of Active Acidic Species. CHEM LETT 1993. [DOI: 10.1246/cl.1993.581] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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20
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Iijima H, Nakahara Y, Ogawa T. Synthesis of the N-terminal glycopentapeptides of human glycophorin am and an carrying trimeric sialosyl Tn epitope. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)74775-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Nakahara Y, Iijima H, Shibayama S, Ogawa T. Stereoselective total synthesis of glycopeptides bearing the dimeric and trimeric sialosyl-Tn epitope. Carbohydr Res 1991; 216:211-25. [PMID: 1724631 DOI: 10.1016/0008-6215(92)84163-m] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The dimeric and trimeric sialosyl-Tn epitopes, [alpha-D-Neup5Ac-(2----6)-alpha-D-GalpNAc-(1----3)-L-Ser]n-L-Val (n = 2 and 3), which represent part of a clustered carbohydrate region of glycophorin A, a human erythrocyte glycoprotein, have been synthesised stereoselectively. 2-Azido-3-O-benzyl-4,6-O-benzylidene-2-deoxy-D-galactopyranosyl fluoride (GalpNAc unit), Fmoc-L-serine phenacyl ester (Ser unit), and benzyl 5-acetamido-4,7,8,9-tetra-O-benzyl-5-deoxy-3-S-phenyl-3-thio-D-erythro-L - gluco-2-nonulopyranosylonate bromide (Neup5Ac unit) were the key intermediates for stereoselective glycosylation. 2-Ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline-promoted elongation of the peptide chain and then hydrogenolysis afforded the title compounds.
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Affiliation(s)
- Y Nakahara
- RIKEN Institute of Physical and Chemical Research, Saitama, Japan
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22
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Fields GB, Noble RL. Solid phase peptide synthesis utilizing 9-fluorenylmethoxycarbonyl amino acids. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1990; 35:161-214. [PMID: 2191922 DOI: 10.1111/j.1399-3011.1990.tb00939.x] [Citation(s) in RCA: 1864] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
9-Fluorenylmethoxycarbonyl (Fmoc) amino acids were first used for solid phase peptide synthesis a little more than a decade ago. Since that time, Fmoc solid phase peptide synthesis methodology has been greatly enhanced by the introduction of a variety of solid supports, linkages, and side chain protecting groups, as well as by increased understanding of solvation conditions. These advances have led to many impressive syntheses, such as those of biologically active and isotopically labeled peptides and small proteins. The great variety of conditions under which Fmoc solid phase peptide synthesis may be carried out represents a truly "orthogonal" scheme, and thus offers many unique opportunities for bioorganic chemistry.
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Affiliation(s)
- G B Fields
- Department of Pharmaceutical Chemistry, University of California, San Francisco
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23
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Filira F, Biondi L, Scolaro B, Foffani MT, Mammi S, Peggion E, Rocchi R. Solid phase synthesis and conformation of sequential glycosylated polytripeptide sequences related to antifreeze glycoproteins. Int J Biol Macromol 1990; 12:41-9. [PMID: 2083240 DOI: 10.1016/0141-8130(90)90080-t] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Sequential glycopeptides [Thr(beta-D-galactose)-Ala-Ala]n, with n ranging from 2 to 7, as models of natural antifreeze glycoproteins were synthesized by the continuous flow, solid phase procedure. The conformational properties of these materials in solution were investigated by c.d. and 1H-n.m.r. spectroscopy. In aqueous solution the c.d. pattern is practically independent of chain length and is very similar to that of natural antifreeze glycoproteins. The results are interpreted in terms of random coil structure. The absence of ordered structures is further confirmed by n.m.r. data. A small amount of ordered conformation can be induced either by increasing the temperature of the aqueous solution or by addition of TFE. The c.d. pattern of all glycopeptides in water at temperatures higher than 50 degrees C are compatible with the presence of a small amount of alpha-helix or 3(10) helix. Since the glyco-hexapeptide is too short to form an alpha-helix, the hypothesis is made that in the glycopeptides in water at high temperature a small amount of 3(10) helix is formed. The same is observed for the 21-residue glycopeptide in presence of 85% (v/v) TFE. In this medium, the c.d. data on the glyco-hexapeptide are more compatible with the presence of a small amount of beta-structure.
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Affiliation(s)
- F Filira
- Department of Organic Chemistry, University of Padua, Italy
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24
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Meldal M, Jensen KJ. Pentafluorophenyl esters for the temporary protection of the α-carboxy group in solid phase glycopeptide synthesis. ACTA ACUST UNITED AC 1990. [DOI: 10.1039/c39900000483] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Toyokuni T, Dean B, Hakomori SI. Synthetic vaccines: I. Synthesis of multivalent Tn antigen cluster-lysyllysine conjugates. Tetrahedron Lett 1990. [DOI: 10.1016/s0040-4039(00)94669-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Rakotomanomana N, Lacombe JM, Pavia EAA. Reaction Des Tert-Butyl Glycosides Avec Les Acides De Lewis: Deprotection Selective Du Carbone Anomere. J Carbohydr Chem 1990. [DOI: 10.1080/07328309008545800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Njara Rakotomanomana
- a Laboratoire de Chimie Bioorganique Faculté des Sciences d'Avignon 33 , rue Louis Pasteur, 84000 , Avignon , France
- b Laboratoire de Chimie Bioorganique Faculté des Sciences d'Avignon 33 , rue Louis Pasteur, 84000 , Avignon , France
| | - Jean-Michel Lacombe
- a Laboratoire de Chimie Bioorganique Faculté des Sciences d'Avignon 33 , rue Louis Pasteur, 84000 , Avignon , France
- b Laboratoire de Chimie Bioorganique Faculté des Sciences d'Avignon 33 , rue Louis Pasteur, 84000 , Avignon , France
| | - et André A. Pavia
- a Laboratoire de Chimie Bioorganique Faculté des Sciences d'Avignon 33 , rue Louis Pasteur, 84000 , Avignon , France
- b Laboratoire de Chimie Bioorganique Faculté des Sciences d'Avignon 33 , rue Louis Pasteur, 84000 , Avignon , France
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27
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Paulsen H, Rauwald W, Weichert U. Bausteine von Oligosacchariden, LXXXVI. Glycosidierung mit Thioglycosiden von Oligosacchariden zu Segmenten von O-Glycoproteinen. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/jlac.198819880114] [Citation(s) in RCA: 60] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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28
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29
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Kolář Č, Knödler U, Seiler FR, Fehlhaber HW, Sinnwell V, Schultz M, Paulsen H. Ungewöhnliche Reaktion zu Glycosylurethanen bei einer Glycopeptidsynthese. ACTA ACUST UNITED AC 1987. [DOI: 10.1002/jlac.198719870703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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30
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31
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Ferrari B, Pavia AA. Blood group antigens: synthesis of Ss antigenic peptides related to human glycophorin B. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1986; 28:456-61. [PMID: 3818169 DOI: 10.1111/j.1399-3011.1986.tb03279.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The human Ss blood group antigens are located on glycophorin B, a minor human erythrocyte membrane glycoprotein. The structural difference in Ss antigens is determined by a Met/Thr polymorphism at position 29. This report describes the first synthesis of the two peptides carrying the Ss specificities, SS: Asn-Gly-Glu-Met-Gly-Gln-Leu-Val and ss: Asn-Gly-Glu-Thr-Gly-Gln-Leu-Val.
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32
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Piller V, Piller F, Cartron JP. Isolation and characterization of an N-acetylgalactosamine specific lectin from Salvia sclarea seeds. J Biol Chem 1986. [DOI: 10.1016/s0021-9258(18)66982-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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33
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Dill K, Carter RD, Lacombe JM, Pavia AA. Possible role of the carbohydrate residues on the structure of the N-terminus of glycophorin AM. Carbohydr Res 1986; 152:217-28. [PMID: 3768909 DOI: 10.1016/s0008-6215(00)90301-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Natural-abundance 13C nuclear magnetic resonance (13C-n.m.r.) was used to study the effect of monoglycosylation on the structure and dynamics of a pentapeptide related to the N-terminus of glycophorin AM. The results of this study indicate that a single point of glycosylation, on the pentapeptide, can significantly affect its structure. Moreover, glycosylation of this pentapeptide also affects its dynamic motion in solution. This study further defines the role that the carbohydrate residue plays in determining the structure about the N-terminus of glycophorin AM.
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Paulsen H, Schultz M. Bausteine von Oligosacchariden, LXXIII. Synthese der Tetrapeptidsequenz 12 bis 15 des Asialoglycophorin A mit vier Disaccharid-Seitenketten. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/jlac.198619860815] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Dill K, Lannom HK, Denarié M, Lacombe JM, Pavia AA. Structural, dynamic, and metal-ion binding studies of the core glycopeptides beta-D-Gal-(1----3)-alpha-D-GalNAc----Ser, Thr by 13C-N.m.r. spectroscopy. Carbohydr Res 1985; 142:11-20. [PMID: 4075324 DOI: 10.1016/s0008-6215(00)90729-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
13C-N.m.r. spectral data as well as spin-lattice relaxation times (T1 values) are presented for the core glycopeptides beta-D-Gal-(1----3)-alpha-D-GalNAc----Ser, Thr. The binding of Gd3+ to these model compounds containing N-terminal blocking groups and esterified carboxyl groups indicates that the disaccharide contains a rather weak, but unique, binding-site in the vicinity of C-2 of alpha-D-GalNAc (possibly involving N-2', the acetamido carbonyl group, O-3' and/or possibly the glycosidic oxygen atom (O-3)).
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36
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Dill K, Berman E, Pavia AA. Natural-abundance, 13C-nuclear magnetic resonance-spectral studies of carbohydrates linked to amino acids and proteins. Adv Carbohydr Chem Biochem 1985; 43:1-49. [PMID: 3913285 DOI: 10.1016/s0065-2318(08)60066-9] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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38
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Carter R, Hardy RE, Lannom HK, Dill K, Ferrari B, Pavia A. 13C n.m.r. study of the pH behaviour of N-methylated peptides related to the N-terminus of glycophorins. Int J Biol Macromol 1984. [DOI: 10.1016/0141-8130(84)90021-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Dill K, Hardy RE, Batstone-Cunningham RL, Daman ME, Ferrari B, Pavia AA. 13C-N.M.R.-spectral study of the pH behavior of reductively [13C]methylated, glycophorin a glyco-octapeptides and a related glycopentapeptide. Carbohydr Res 1984. [DOI: 10.1016/0008-6215(84)85328-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Prigent MJ, Bencomo VV, Sinaÿ P, Cartron JP. Interaction of synthetic glycopeptides carrying clusters ofO-glycosidic disaccharide chains (β-d-Gal(1–3)-α-d-GalNAc) withβ-d-galactose-binding lectins. Glycoconj J 1984. [DOI: 10.1007/bf01875414] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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