PubMed:3829038 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PubMed/sourceid/3829038","sourcedb":"PubMed","sourceid":"3829038","source_url":"http://www.ncbi.nlm.nih.gov/pubmed/3829038","text":"Structural analysis of papaya polysaccharide II.\nThe structure of papaya polysaccharide II (PP II) isolated by Chandrasekaran et al. [Carbohydr. Res., 60 (1978) 105-115] has been investigated by methylation analysis of the carboxyl-reduced polymer and by partial hydrolysis of both the intact (arabinose, 31.0; rhamnose, 13.3; galactose, 42.6; glucuronic acid, 10.3; and 4-O-methylglucuronic acid, 2.8%), and carboxyl-reduced polymers. Methylation analysis of carboxyl-reduced PP II indicated a very highly branched structure in which approximately 39% of the galactopyranose units are disubstituted, 24% are monosubstituted, 20% are trisubstituted, and 17% are nonreducing end units. Methylation analysis of products of partial hydrolysis of both intact and carboxyl-reduced polymers indicated that the backbone of the polysaccharide is made up of galactosyl residues substituted at either O-3 or -6, that the principal aldobiouronic acid fragment is 6-O-(glucopyranosyluronic acid)galactose, that the rhamnosyl units are substituted at O-3 with either terminal arabinofuranosyl or galactopyranosyl groups, and that the rhamnosyl residues are themselves linked to glucuronic acid residues through O-4. From this information, a possible statistical fragment with six arabinofuranose and two galactopyranose nonreducing end-groups per 19 sugar units [five units in the main chain of (1----3)-linked galactopyranose units] is proposed.","tracks":[{"project":"sentences","denotations":[{"id":"TextSentencer_T1","span":{"begin":0,"end":48},"obj":"Sentence"},{"id":"TextSentencer_T2","span":{"begin":49,"end":144},"obj":"Sentence"},{"id":"TextSentencer_T3","span":{"begin":145,"end":435},"obj":"Sentence"},{"id":"TextSentencer_T4","span":{"begin":436,"end":684},"obj":"Sentence"},{"id":"TextSentencer_T5","span":{"begin":685,"end":1202},"obj":"Sentence"},{"id":"TextSentencer_T6","span":{"begin":1203,"end":1433},"obj":"Sentence"},{"id":"T1","span":{"begin":0,"end":48},"obj":"Sentence"},{"id":"T2","span":{"begin":49,"end":144},"obj":"Sentence"},{"id":"T3","span":{"begin":145,"end":435},"obj":"Sentence"},{"id":"T4","span":{"begin":436,"end":684},"obj":"Sentence"},{"id":"T5","span":{"begin":685,"end":1202},"obj":"Sentence"},{"id":"T6","span":{"begin":1203,"end":1433},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"TextSentencer_T1","pred":"source","obj":"sentences"},{"subj":"TextSentencer_T2","pred":"source","obj":"sentences"},{"subj":"TextSentencer_T3","pred":"source","obj":"sentences"},{"subj":"TextSentencer_T4","pred":"source","obj":"sentences"},{"subj":"TextSentencer_T5","pred":"source","obj":"sentences"},{"subj":"TextSentencer_T6","pred":"source","obj":"sentences"},{"subj":"T1","pred":"source","obj":"sentences"},{"subj":"T2","pred":"source","obj":"sentences"},{"subj":"T3","pred":"source","obj":"sentences"},{"subj":"T4","pred":"source","obj":"sentences"},{"subj":"T5","pred":"source","obj":"sentences"},{"subj":"T6","pred":"source","obj":"sentences"}]},{"project":"GlyCosmos6-Glycan-Motif-Structure","denotations":[{"id":"T1","span":{"begin":327,"end":336},"obj":"https://glytoucan.org/Structures/Glycans/G65889KE"},{"id":"T2","span":{"begin":327,"end":336},"obj":"https://glytoucan.org/Structures/Glycans/G68158BT"},{"id":"T3","span":{"begin":983,"end":992},"obj":"https://glytoucan.org/Structures/Glycans/G65889KE"},{"id":"T4","span":{"begin":983,"end":992},"obj":"https://glytoucan.org/Structures/Glycans/G68158BT"}],"attributes":[{"subj":"T1","pred":"source","obj":"GlyCosmos6-Glycan-Motif-Structure"},{"subj":"T2","pred":"source","obj":"GlyCosmos6-Glycan-Motif-Structure"},{"subj":"T3","pred":"source","obj":"GlyCosmos6-Glycan-Motif-Structure"},{"subj":"T4","pred":"source","obj":"GlyCosmos6-Glycan-Motif-Structure"}]},{"project":"GlyCosmos6-Glycan-Motif-Image","denotations":[{"id":"T1","span":{"begin":327,"end":336},"obj":"Glycan_Motif"},{"id":"T3","span":{"begin":983,"end":992},"obj":"Glycan_Motif"}],"attributes":[{"id":"A1","pred":"image","subj":"T1","obj":"https://api.glycosmos.org/wurcs2image/0.10.0/png/binary/G68158BT"},{"id":"A2","pred":"image","subj":"T1","obj":"https://api.glycosmos.org/wurcs2image/0.10.0/png/binary/G65889KE"},{"id":"A3","pred":"image","subj":"T3","obj":"https://api.glycosmos.org/wurcs2image/0.10.0/png/binary/G68158BT"},{"id":"A4","pred":"image","subj":"T3","obj":"https://api.glycosmos.org/wurcs2image/0.10.0/png/binary/G65889KE"},{"subj":"T1","pred":"source","obj":"GlyCosmos6-Glycan-Motif-Image"},{"subj":"T3","pred":"source","obj":"GlyCosmos6-Glycan-Motif-Image"}]},{"project":"Anatomy-UBERON","denotations":[{"id":"T1","span":{"begin":804,"end":812},"obj":"Body_part"}],"attributes":[{"id":"A1","pred":"uberon_id","subj":"T1","obj":"http://purl.obolibrary.org/obo/UBERON_0001130"},{"subj":"T1","pred":"source","obj":"Anatomy-UBERON"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"sentences","color":"#a5ec93","default":true},{"id":"GlyCosmos6-Glycan-Motif-Structure","color":"#ec93bf"},{"id":"GlyCosmos6-Glycan-Motif-Image","color":"#93d9ec"},{"id":"Anatomy-UBERON","color":"#ece593"}]}]}}