PubMed:1596918 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PubMed/sourceid/1596918","sourcedb":"PubMed","sourceid":"1596918","source_url":"http://www.ncbi.nlm.nih.gov/pubmed/1596918","text":"1H-N.m.r. study of enzymically generated wheat-endosperm arabinoxylan oligosaccharides: structures of hepta- to tetradeca-saccharides containing two or three branched xylose residues.\nThe structures of hepta- to tetradeca-saccharides, generated by digestion of wheat-endosperm arabinoxylan with endo-(1----4)-beta-D-xylanase, and isolated by gel-permeation chromatography on Bio-Gel P-6 and high-performance anion-exchange chromatography with pulsed amperometric detection (h.p.a.e.-p.a.d.), were elucidated using monosaccharide and methylation analysis, f.a.b.-m.s., and 1H-n.m.r. spectroscopy. The structures identified had two branching elements, ----4)[alpha-L-Araf-(1----3)]-beta-D-Xylp-(1---- and/or ----4) [alpha-L-Araf-(1----2)][alpha-L-Araf-(1----3)]-beta-D-Xyl p-(1----, directly connected to each other in all four possible combinations. The h.p.a.e.-p.a.d. elution pattern showed that these combinations are not present in equal amounts. Also, compounds containing two 2,3-branched beta-D-Xylp residues separated by one or two unbranched beta-D-Xylp residues were found, and the presence of a tetradecasaccharide containing three 2,3-branched beta-D-Xylp residues was established.","tracks":[{"project":"sentences","denotations":[{"id":"TextSentencer_T1","span":{"begin":0,"end":183},"obj":"Sentence"},{"id":"TextSentencer_T2","span":{"begin":184,"end":595},"obj":"Sentence"},{"id":"TextSentencer_T3","span":{"begin":596,"end":848},"obj":"Sentence"},{"id":"TextSentencer_T4","span":{"begin":849,"end":949},"obj":"Sentence"},{"id":"TextSentencer_T5","span":{"begin":950,"end":1192},"obj":"Sentence"},{"id":"T1","span":{"begin":0,"end":183},"obj":"Sentence"},{"id":"T2","span":{"begin":184,"end":595},"obj":"Sentence"},{"id":"T3","span":{"begin":596,"end":848},"obj":"Sentence"},{"id":"T4","span":{"begin":849,"end":949},"obj":"Sentence"},{"id":"T5","span":{"begin":950,"end":1192},"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":"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"}]},{"project":"NCBITAXON","denotations":[{"id":"T1","span":{"begin":41,"end":46},"obj":"OrganismTaxon"},{"id":"T2","span":{"begin":261,"end":266},"obj":"OrganismTaxon"}],"attributes":[{"id":"A1","pred":"db_id","subj":"T1","obj":"4565"},{"id":"A2","pred":"db_id","subj":"T2","obj":"4565"},{"subj":"T1","pred":"source","obj":"NCBITAXON"},{"subj":"T2","pred":"source","obj":"NCBITAXON"}]},{"project":"Glycosmos6-MAT","denotations":[{"id":"T1","span":{"begin":47,"end":56},"obj":"http://purl.obolibrary.org/obo/MAT_0000227"},{"id":"T2","span":{"begin":267,"end":276},"obj":"http://purl.obolibrary.org/obo/MAT_0000227"}],"attributes":[{"subj":"T1","pred":"source","obj":"Glycosmos6-MAT"},{"subj":"T2","pred":"source","obj":"Glycosmos6-MAT"}]},{"project":"Anatomy-MAT","denotations":[{"id":"T1","span":{"begin":47,"end":56},"obj":"Body_part"},{"id":"T2","span":{"begin":267,"end":276},"obj":"Body_part"}],"attributes":[{"id":"A1","pred":"mat_id","subj":"T1","obj":"http://purl.obolibrary.org/obo/MAT_0000227"},{"id":"A2","pred":"mat_id","subj":"T2","obj":"http://purl.obolibrary.org/obo/MAT_0000227"},{"subj":"T1","pred":"source","obj":"Anatomy-MAT"},{"subj":"T2","pred":"source","obj":"Anatomy-MAT"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"sentences","color":"#d793ec","default":true},{"id":"NCBITAXON","color":"#93ecbd"},{"id":"Glycosmos6-MAT","color":"#eca393"},{"id":"Anatomy-MAT","color":"#939cec"}]}]}}