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Yang ZG, Wen XF, Li YH, Matsuzaki K, Kitanaka S. Inhibitory effects of the constituents of Hippophae rhamnoides on 3T3-L1 cell differentiation and nitric oxide production in RAW264.7 cells. Chem Pharm Bull (Tokyo) 2013; 61:279-85. [PMID: 23449196 DOI: 10.1248/cpb.c12-00835] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Three new flavonol glycosides, hippophaeosides A-C (1-3), together with 27 known constituents, were isolated from Hippophae rhamnoides L. leaves. Their structures were determined by spectroscopic analyses. Their inhibitory activities on 3T3-L1 preadipocyte differentiation and triglyceride accumulation in maturing adipocytes, and nitric oxide production in RAW264.7 cells were examined.
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Affiliation(s)
- Zhi-Gang Yang
- School of Pharmacy, Nihon University, Funabashi, Chiba, Japan
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Zhang Z, Wang D, Zhao Y, Gao H, Hu YH, Hu JF. Fructose-derived carbohydrates from Alisma orientalis. Nat Prod Res 2009; 23:1013-20. [PMID: 19521916 DOI: 10.1080/14786410802391120] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Nine fructose-derived carbohydrates were obtained from the methanol extract from the rhizome of Alisma orientalis. On the basis of spectroscopic analysis, their structures were determined to be alpha-D-fructofuranose (1), beta-D-fructofuranose (2), ethyl alpha-D-fructofuranoside (3), ethyl beta-D-fructofuranoside (4), 5-hydroxymethyl-furaldehyde (5), sucrose (6), raffinose (7), stachyose (8) and verbascose (9), along with two oligosaccharides of manninotriose (10) and verbascotetraose (11). Compounds 3, 4 and 7-11 were isolated from this plant for the first time. A hypothetical biosynthesis pathway among these isolated carbohydrates (1-11) was briefly introduced.
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Affiliation(s)
- Zhen Zhang
- Department of Natural Products for Chemical Genetic Research, Key Laboratory of Brain Functional Genomics, Ministry of Education & Shanghai Key Laboratory of Brain Functional Genomics (MOE & SBFG), East China Normal University, Shanghai 200062, China
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Nagaoka M, Shibata H, Kimura I, Hashimoto S, Kimura K, Sawada H, Yokokura T. Structural studies on a cell wall polysaccharide from Bifidobacterium longum YIT4028. Carbohydr Res 1995; 274:245-9. [PMID: 7585708 DOI: 10.1016/0008-6215(95)00076-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The major fraction of rhamnogalactan was isolated from the cell wall of Bifidobacterium longum YIT4028 by treatment with N-acetylmuramidase. This polysaccharide was composed of rhamnose and galactose in a molar ratio of about 2:3. The 13C NMR spectrum indicated that it contained a pentasaccharides repeating unit. This observation, and the results of Smith degradation, partial acid hydrolysis and methylation analysis led to the conclusion that its structure is [formula: see text]
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Affiliation(s)
- M Nagaoka
- Yakult Central Institute for Microbiological Research, Tokyo, Japan
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Tvaroska I, Taravel FR. Carbon-proton coupling constants in the conformational analysis of sugar molecules. Adv Carbohydr Chem Biochem 1995; 51:15-61. [PMID: 7484362 DOI: 10.1016/s0065-2318(08)60191-2] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- I Tvaroska
- Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovak Republic
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Gupta DS, Shashkov AS, Jann B, Jann K. Structures of the O1B and O1C lipopolysaccharide antigens of Escherichia coli. J Bacteriol 1992; 174:7963-70. [PMID: 1281148 PMCID: PMC207532 DOI: 10.1128/jb.174.24.7963-7970.1992] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The O-specific moieties of the O1B antigen (lipopolysaccharide) from Escherichia coli O1B:K1 and the O1C antigen from E. coli O1C:K- both consist of L-rhamnose, D-galactose, N-acetyl-D-glucosamine, and N-acetyl-D-mannosamine in a molar ratio of 2:1:1:1. By using fragmentation procedures, methylation analysis, and one- and two-dimensional nuclear magnetic resonance spectroscopy, the structures of these polysaccharides were found to be [formula: see text] In the O1B polysaccharide X is 2, and in the O1C polysaccharide X is 3. With the recently published structure of the O1A polysaccharides (B. Jann, A. S. Shashkov, D. S. Gupta, S. M. Panasenko, and K. Jann, Carbohydr. Polym. 18:51-57 1992), three related O1 antigens are now known. Their common (O1-specific) epitope is suggested to be the side-chain N-acetyl-D-mannosamine residue.
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Affiliation(s)
- D S Gupta
- Max-Planck-Institut für Immunobiologie, Freiburg, Germany
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van Dam JE, Breg J, Komen R, Kamerling JP, Vliegenthart JF. Isolation and structural studies of phosphate-containing oligosaccharides from alkaline and acid hydrolysates of Streptococcus pneumoniae type 6B capsular polysaccharide. Carbohydr Res 1989; 187:267-86. [PMID: 2743350 DOI: 10.1016/0008-6215(89)80008-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The capsular polysaccharide of Streptococcus pneumoniae serotype 6B [----2)-alpha-D-Galp-(1----3)-alpha-D-Glcp-(1----3)-alpha-L-Rhap-( 1----4)- D-RibOH-(5-P----]n was depolymerised under alkaline (NaOH) and acidic (HF) conditions. The former treatment yielded, as the major component, alpha-2-P-Galp-(1----3)-alpha-Glcp-(1----3)-alpha-Rhap-(1----4)-5- P-RibOH. The latter treatment at -16 degrees gave alpha-Galp-(1----3)-alpha-Glcp-(1----3)-alpha-Rhap-(1----4)-Rib OH-(5-P----2)- alpha-Galp-(1----3)-alpha-Glcp-(1----3)-alpha-Rhap-(1----4)-Rib OH and at 4 degrees gave alpha-Galp-(1----3)-alpha-Glcp-(1----3)-alpha-Rhap-(1----4)-Rib OH. These oligosaccharides were characterised by sugar analysis, f.a.b.-m.s., and 1H- and 13C-n.m.r. spectroscopy.
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Affiliation(s)
- J E van Dam
- Department of Bio-Organic Chemistry, Utrecht University, The Netherlands
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Strecker G, Wieruszeski JM, Martel C, Montreuil J. Complete 1H- and 13C-n.m.r. assignments for two sulphated oligosaccharide alditols of hen ovomucin. Carbohydr Res 1989; 185:1-13. [PMID: 2713869 DOI: 10.1016/0008-6215(89)84016-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The complete 1H- and 13C-n.m.r. assignments for beta-D-Galp-(1----4)-beta-D-GlcpNAc-6-SO3H-(1----6)-[beta-D-Galp-(1----3 )]- D-GalNAcol and alpha-NeuAcp-(2----3)-beta-D-Galp-(1----3)-[beta-D-Galp-(1----4)-b eta-D- GlcpNAc-6-SO3H-(1----6)]-D-GalNAcol were made by a combination of 2-D correlation experiments (Relayed-Cosy; and 13C,1H Correlation-shift n.m.r. spectroscopy), and 1-D n.m.r. spectroscopy. The results illustrate the ability of these methods to locate sulphate and NeuAc groups in anionic mucinous glycoproteins.
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Affiliation(s)
- G Strecker
- Laboratoire de Chimie Biologique, Unité Associée au CNRS 217, Université des Sciences et Techniques de Lille Flandres-Artois, Villeneuve d'Ascq, France
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Strecker G, Wieruszeski JM, Michalski JC, Montreuil J. Assignment of the 1H- and 13C-NMR spectra of eight oligosaccharides of the lacto-N-tetraose and neotetraose series. Glycoconj J 1989; 6:67-83. [PMID: 2535479 DOI: 10.1007/bf01047891] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The assignment of the 13C- and 1H-NMR spectra of eight oligosaccharides of the lacto-N-tetraose and neotetraose series was obtained from homonuclear and heteronuclear correlation spectroscopy. These analyses were performed on the following compounds: 1. Gal beta 1-3GlcNAc beta 1-3Gal beta 1-4Glc; 2. NeuAc alpha 2-3Gal beta 1-3GlcNAc beta 1-3Gal beta 1-4Glc; 3. Gal beta 1-3[NeuAc alpha 2-6]GlcNAc beta 1-3Gal beta 1-4Glc; 4. NeuAc alpha 2-3Gal beta 1-3[NeuAc alpha 2-6]GlcNAc beta 1-3Gal beta 1-4Glc; 5. NeuAc alpha 2-3Gal beta 1-3[Fuc alpha 1-4]GlcNAc beta 1-3Gal beta 1-4Glc; 6. Fuc alpha 1-2Gal beta 1-3[NeuAc alpha 2-6]GlcNAc beta 1-3Gal beta 1-4Glc; 7. Gal beta 1-4GlcNAc beta 1-3Gal beta 1-4Glc; 8. NeuAc alpha 2-6Gal beta 1-4GlcNAc beta 1-3Gal beta 1-4Glc.
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Affiliation(s)
- G Strecker
- Laboratoire de Chimie Biologique, Université des Sciences et Techniques de Lille Flandres-Artois, Villeneuve d'Ascq, France
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Breg J, Romijn D, Vliegenthart JF, Strecker G, Montreuil J. Scope and limitations of rotating-frame nuclear Overhauser enhancement spectroscopy applied to oligosaccharides. Carbohydr Res 1988; 183:19-34. [PMID: 3233596 DOI: 10.1016/0008-6215(88)80042-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Two-dimensional rotating-frame nuclear Overhauser enhancement spectroscopy has been applied to milk oligosaccharides containing the blood-group determinants Lea, Led, or Leb. The results indicate a large number of dipolar interactions that are consistent with the preferred conformations described for these blood-group determinants. Despite careful experimental conditions, coherent transfer processes are not suppressed completely, allowing only a qualitative evaluation of the nuclear Overhauser data. The 1H- and 13C-n.m.r. spectra are assigned by comparison with literature data and by application of two-dimensional 13C-1H shift-correlation spectroscopy.
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Affiliation(s)
- J Breg
- Department of Bio-Organic Chemistry, University of Utrecht, The Netherlands
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Rodriguez ML, Jann B, Jann K. Structure and serological characteristics of the capsular K4 antigen of Escherichia coli O5:K4:H4, a fructose-containing polysaccharide with a chondroitin backbone. EUROPEAN JOURNAL OF BIOCHEMISTRY 1988; 177:117-24. [PMID: 2460347 DOI: 10.1111/j.1432-1033.1988.tb14351.x] [Citation(s) in RCA: 92] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The chemical structure of the K4-specific capsular polysaccharide (K4 antigen) of Escherichia coli O5:K4:H4 was elucidated by composition, carboxyl reduction periodate oxidation methylation nuclear-magnetic-resonance spectroscopy and enzymatic cleavage. The polysaccharide consists of a backbone with the structure----3)-beta-D-glucuronyl-(1,4)-beta-D-N-acetylgalactosaminyl(1- to which beta-fructofuranose is linked at C-3 of glucuronic acid. Mild acid hydrolysis liberated fructose and converted the K4 antigen into a polysaccharide which has the same structure as chondroitin. The defructosylated polysaccharide was a substrate for hyaluronidase and chondroitinase. The serological reactivity of the K4 polysaccharide was markedly reduced after defructosylation.
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Affiliation(s)
- M L Rodriguez
- Max-Planck-Institut für Immunobiologie, Freiburg, Federal Republic of Germany
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Dengler T, Himmelspach K, Jann B, Jann K. Structure of the capsular K3 antigen of Escherichia coli 04:K3:H4, a polysaccharide containing a 4-deoxy-2-hexulosonic acid. Carbohydr Res 1988; 178:191-201. [PMID: 3078947 DOI: 10.1016/0008-6215(88)80111-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The K3-antigenic capsular polysaccharide (K3 antigen) of Escherichia coli contains L-rhamnose, a 4-deoxy-2-hexulosonic acid, and an O-acetyl group in the molar ratio of 3:1:1. The backbone consists of a ----2)-O-alpha-L-rhamnopyranosyl-(1----3)-O-alpha-L-rhamnopyranosyl-(1----3)-O-alpha-L-rhamnopyranosyl-(1---- repeating unit. Either one of the 3-linked L-rhamnopyranosyl residues of each repeating unit may be substituted at O-2 with a 4-deoxy-2-hexulosonic acid, an isomer of the furanosyl form of KDO, about 90% of which is acetylated at 0-6. The 4-deoxy-2-hexulosonic acid residue is linked to the L-rhamnan backbone in a very labile linkage which is split by 1% acetic acid (30 min, 100 degrees). The K3 polysaccharide has a molecular weight of approximately 38,000, corresponding to approximately 60 repeating units.
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Affiliation(s)
- T Dengler
- Max-Planck-Institut f:ur Immunbiologie, D-7800 Freiburg (Federal Republic of Germany)
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Breg J, Romijn D, van Halbeek H, Vliegenthart JF, Visser RA, Haasnoot CA. Characterisation of four lactose monophosphates by application of 31P-, 13C-, and 1H-n.m.r. spectroscopy. Carbohydr Res 1988. [DOI: 10.1016/0008-6215(88)85078-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Rodriguez ML, Jann B, Jann K. Comparative structural elucidation of the K18, K22, and K100 antigens of Escherichia coli as related ribosyl-ribitol phosphates. Carbohydr Res 1988; 173:243-53. [PMID: 3282653 DOI: 10.1016/s0008-6215(00)90820-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The structures of the capsular K18, K22, and K100 antigens of E. coli O23:K18:H15, O23:K22:H15, and O75:K100:H5, respectively, were elucidated by determination of composition, 1H-, 13C-, and 31P-n.m.r. spectroscopy, periodate oxidation, alkaline hydrolysis followed by incubation with alkaline phosphatase, and methylation analysis of the polymers and their neutral fragmentation products. The polymers are poly(ribosyl-ribitol phosphates) related to the capsular antigen of H. influenzae (Hib). The K22 antigen has the repeating unit -P-2)-beta-Rib-(1----2)-RibOH-(5-, and the K18 antigen has the same polymer chain with partial 3-O-acetylation of the ribose moiety. The K100 antigen consists of repeating units of -P-3)-beta-Rib-(1----2)-RibOH-(5- and seems to have a secondary structure different from that of the other antigens. Together with the Hib capsular antigens, the structure of which was reported as -P-3)-beta-Rib-(1----1)-RibOH-(5-, these capsular antigens represent a structurally related group of capsular polymers.
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Affiliation(s)
- M L Rodriguez
- Max-Planck-Institut für Immunobiologie, Freiburg-Zähringen, F.R.G
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Strecker G, Wieruszeski JM, Michalski JC, Montreuil J. Structure of a new nonasaccharide isolated from human milk: VI2Fuc,V4Fuc,III3Fuc-p-lacto-N-hexaose. Glycoconj J 1988. [DOI: 10.1007/bf01049914] [Citation(s) in RCA: 9] [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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Tabushi I, Nabeshima T, Yamamura K, Fujita H. 400 MHz Two-Dimensional NMR Studies of Cyclodextrin Derivatives for1H and13C Chemical Shift Determination. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.3705] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hoffman RE, Christofides JC, Davies DB, Lawson CJ. Scope and limitations of the simple 13C-n.m.r. method of structural analysis of carbohydrates: glucodisaccharides. Carbohydr Res 1986. [DOI: 10.1016/s0008-6215(00)90190-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dengler T, Jann B, Jann K. Structure of the serine-containing capsular polysaccharide K40 antigen from Escherichia coli O8:K40:H9. Carbohydr Res 1986; 150:233-40. [PMID: 3093075 DOI: 10.1016/0008-6215(86)80019-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The structure of the K40 antigenic capsular polysaccharide (K40 antigen) of E. coli O8:K40:H9 was elucidated by determination of the composition, 1H- and 13C-n.m.r. spectroscopy, periodate oxidation and Smith degradation, and methylation analysis. The K40 polysaccharide consists of [(O-beta-D-glucopyranosyluronic acid)-(1----4)-O-(2-acetamido-2-deoxy-alpha-D-glucopyranosyl)-(1----6)-O -(2-acetamido-2-deoxy-alpha-D-glucopyranosyl)-(1----4)] repeating units. All of the glucuronic acid residues are substituted amidically with L-serine.
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A 13C-N.M.R. investigation of glycosyl azides and other azido sugars: Stereochemical influences on the one-bond 13C-1H coupling constants. Carbohydr Res 1985. [DOI: 10.1016/s0008-6215(00)90692-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kaplan N, Rosenberg E, Jann B, Jann K. Structural studies of the capsular polysaccharide of Acinetobacter calcoaceticus BD4. EUROPEAN JOURNAL OF BIOCHEMISTRY 1985; 152:453-8. [PMID: 4054115 DOI: 10.1111/j.1432-1033.1985.tb09218.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Compositional analysis of the intact and carboxyl-reduced capsular polysaccharide of Acinetobacter calcoaceticus BD4 (PS-4) showed it to consist of L-rhamnose, D-glucose, D-glucuronic and D-mannose in molar ratios of 4:1:1:1. 13C-nuclear magnetic resonance spectroscopy, methylation analysis, oligosaccharide analysis and base-catalyzed beta-elimination were used to elucidate the primary structure. Oligosaccharides were obtained by enzymatic depolymerization with a specific bacteriophage-induced depolymerase and by partial acid hydrolysis. Form the results it is concluded that PS-4 consists of repeating units of the heptasaccharide (Formula: see text). The bacteriophage-induced depolymerase was found to be an endo-beta-D-glucosidase that hydrolyzed the bond beta-D-Glc-(1----3)-L-Rha to generate a heptasaccharide in 40% yield.
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Hofmann P, Jann B, Jann K. Structure of the amino acid-containing capsular polysaccharide (K54 antigen) from Escherichia coli O6:K54:H10. Carbohydr Res 1985; 139:261-71. [PMID: 3896488 DOI: 10.1016/0008-6215(85)90025-4] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The structure of the K54-antigenic polysaccharide (K54 antigen) of Escherichia coli O6:K54:H10 was elucidated by determination of the composition, 1H- and 13C-n.m.r. spectroscopy, periodate oxidation, and a study of the oligosaccharides obtained by partial hydrolysis with acid. The K54 polysaccharide consists of----3)-beta-D-glucosyluronic acid-(1----3)-alpha-L-rhamnosyl-(1----repeating-units. Of the glucuronic acid residues, approximately 85% are substituted in the ratio 9:1 with L-threonine and L-serine amidically linked to the carboxyl group. The K54 polysaccharide has a molecular weight of approximately 160,000, corresponding to approximately 380 repeating-units.
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Gupta DS, Jann B, Jann K. Escherichia coli O18ac antigen: structure of the O-specific polysaccharide moiety. Infect Immun 1984; 45:203-9. [PMID: 6203837 PMCID: PMC263301 DOI: 10.1128/iai.45.1.203-209.1984] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The O-specific polysaccharide moiety (O18ac polysaccharide) of the O18ac antigen (lipopolysaccharide) from Escherichia coli 2980 (O18ac:K5:Fim+:H-) was isolated in pure form by degradation of the lipopolysaccharide and chromatography on Sephadex G-50. The primary structure of the O18ac polysaccharide was elucidated by composition, fragmentation procedures, methylation analysis, and nuclear magnetic resonance spectroscopy. The polysaccharide consists of repeating units of the pentasaccharide: (formula; see text) which are joined in the polymer by alpha-1,2 linkages.
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Schmidt MA, Jann B, Jann K. Cell-wall lipopolysaccharide of the urinary-tract-infective Escherichia coli 04:K12:H-. Structure of the polysaccharide chain. EUROPEAN JOURNAL OF BIOCHEMISTRY 1983; 137:163-71. [PMID: 6360684 DOI: 10.1111/j.1432-1033.1983.tb07810.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The O-specific polysaccharide moiety (04 polysaccharide) of the 04 antigen (lipopolysaccharide) from Escherichia coli 04:K12:H- was isolated in pure form by degradation of the lipopolysaccharide and chromatography on Sephadex G-50. The primary structure of the 04 polysaccharide was elucidated by composition, Smith degradation, nuclear magnetic resonance spectroscopy, methylation and oligosaccharide analysis. Oligosaccharides were obtained by deaminating fragmentation of partially and completely de-N-acetylated polysaccharides. The polysaccharide consists of repeating units of the pentasaccharide (formula; see text) which are joined in the polymer through alpha-1, 4-linkages. The 04 polysaccharide has a mean molecular mass of 13800 Da and consists of the core oligosaccharide and about 14 pentasaccharide repeating units.
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Wernly J, Lauterwein J. Two-Dimensional NMR Studies of Polyene Systems. I. All-trans-Retinal. Helv Chim Acta 1983. [DOI: 10.1002/hlca.19830660526] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Schmidt MA, Jann K. Structure of the 2-keto-3-deoxy-D-manno-octonic-acid-containing capsular polysaccharide (K12 antigen) of the urinary-tract-infective Escherichia coli O4:K12:H-. EUROPEAN JOURNAL OF BIOCHEMISTRY 1983; 131:509-17. [PMID: 6341054 DOI: 10.1111/j.1432-1033.1983.tb07291.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The primary structure of the K12 antigenic capsular polysaccharide (K12 antigen) of Escherichia coli O4:K12:H- was elucidated by composition, nuclear magnetic resonance spectroscopy, methylation, periodate oxidation and oligosaccharide analysis. The polysaccharide consists of repeating trisaccharide alpha-rhamnosyl-1,2-alpha-rhamnosyl-1,5-dOclA units (dOclA = 2-keto-3-deoxy-D-manno-octonic acid) which are joined through beta-2,3-linkages. About 50% of the dOclA units are O-acetylated at C7 or C8. The sequence of acetylated and non-acetylated dOclA residues is not known. As had been reported before, the polysaccharide is linked to a phosphatidic acid at the reducing end (dOclA) via a phosphodiester bridge. The serologically specific part of the K12 antigen is its polysaccharide moiety.
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Bock K, Pedersen C. Carbon-13 Nuclear Magnetic Resonance Spectroscopy of Monosaccharides. Adv Carbohydr Chem Biochem 1983. [DOI: 10.1016/s0065-2318(08)60055-4] [Citation(s) in RCA: 1194] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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28
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Ponpipom MM, Bugianesi RL, Robbins JC. Synthesis and carbon-13 n.m.r. spectroscopy of Man3 Lys2-raffinose conjugate. Carbohydr Res 1982. [DOI: 10.1016/s0008-6215(00)80783-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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