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LitCovid_Glycan-Motif-Structure

{"project":"LitCovid_Glycan-Motif-Structure","denotations":[{"id":"T202","span":{"begin":240,"end":242},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"},{"id":"T203","span":{"begin":287,"end":289},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"},{"id":"T204","span":{"begin":616,"end":618},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"},{"id":"T205","span":{"begin":810,"end":812},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"},{"id":"T206","span":{"begin":845,"end":847},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"},{"id":"T207","span":{"begin":870,"end":872},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"},{"id":"T208","span":{"begin":883,"end":885},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"},{"id":"T209","span":{"begin":1016,"end":1018},"obj":"https://glytoucan.org/Structures/Glycans/G81533KY"}],"text":"SAs are predominant surface determinants for pathogen attachment, adherence and entry to host cells. Eleven representative vertebrate virus families utilize SAs as initial entry receptors or as attachment factors. Interaction of virus with SA-containing glycans is complex because virus SA-binding lectins are inherently of very low affinity. Viruses acquire enzymes to catalyze virion elution by regional depletion of binding receptors [56]. TM S glycoprotein recognizes oligosaccharide receptors. Using cryo-EM technology and observed structures of S glycoprotein trimers of CoV OC43 complexed with 9-O-acetylated SA, S glycoprotein was demonstrated to mediate virus adhesion and entry to host cells. All CoV S proteins show conservation in binding to 9-O-acetyl-SAs. MERS-CoV also recognizes 9-carbon sugar SA species. MERS-CoV S-1A binds to SA species. For example, SAα2,3- over SAα2,6-linkages expressed in human erythrocytes and mucins are preferentially targeted by MERS-CoV S-1A. Binding is hence blocked by SA modification to 5-N-NeuGc and 7, 9-O-NeuAc species [73]. For example, impairment of ACE2 receptor glycosylation does not influence S-glycoprotein-ACE2 interaction, however, SARS-CoV-2 virus entry into respiratory epithelial host cells was downregulated [133]. Changes in ACE2 N-glycans do not apparently influence interaction with the SARS-CoV S glycoprotein, but instead, impair viral S glycoprotein-mediated membrane fusion. The receptor glycan structures decide the entry of some human viruses. Changes in ACE2 receptor sialylation influences interaction affinity between virus ligands and host receptor. Inter-species or individual genetic variations such as drift and mutation may occur in SARS-CoVs. This explains currently emerging differences in CoV responses within the same population such as humans."}

LitCovid-PD-FMA-UBERON

{"project":"LitCovid-PD-FMA-UBERON","denotations":[{"id":"T634","span":{"begin":94,"end":99},"obj":"Body_part"},{"id":"T635","span":{"begin":448,"end":460},"obj":"Body_part"},{"id":"T636","span":{"begin":472,"end":487},"obj":"Body_part"},{"id":"T637","span":{"begin":553,"end":565},"obj":"Body_part"},{"id":"T638","span":{"begin":622,"end":634},"obj":"Body_part"},{"id":"T639","span":{"begin":696,"end":701},"obj":"Body_part"},{"id":"T640","span":{"begin":713,"end":721},"obj":"Body_part"},{"id":"T641","span":{"begin":804,"end":809},"obj":"Body_part"},{"id":"T642","span":{"begin":918,"end":930},"obj":"Body_part"},{"id":"T643","span":{"begin":1152,"end":1164},"obj":"Body_part"},{"id":"T644","span":{"begin":1248,"end":1253},"obj":"Body_part"},{"id":"T645","span":{"begin":1365,"end":1377},"obj":"Body_part"},{"id":"T646","span":{"begin":1407,"end":1419},"obj":"Body_part"}],"attributes":[{"id":"A634","pred":"fma_id","subj":"T634","obj":"http://purl.org/sig/ont/fma/fma68646"},{"id":"A635","pred":"fma_id","subj":"T635","obj":"http://purl.org/sig/ont/fma/fma62925"},{"id":"A636","pred":"fma_id","subj":"T636","obj":"http://purl.org/sig/ont/fma/fma82742"},{"id":"A637","pred":"fma_id","subj":"T637","obj":"http://purl.org/sig/ont/fma/fma62925"},{"id":"A638","pred":"fma_id","subj":"T638","obj":"http://purl.org/sig/ont/fma/fma62925"},{"id":"A639","pred":"fma_id","subj":"T639","obj":"http://purl.org/sig/ont/fma/fma68646"},{"id":"A640","pred":"fma_id","subj":"T640","obj":"http://purl.org/sig/ont/fma/fma67257"},{"id":"A641","pred":"fma_id","subj":"T641","obj":"http://purl.org/sig/ont/fma/fma82737"},{"id":"A642","pred":"fma_id","subj":"T642","obj":"http://purl.org/sig/ont/fma/fma62845"},{"id":"A643","pred":"fma_id","subj":"T643","obj":"http://purl.org/sig/ont/fma/fma62925"},{"id":"A644","pred":"fma_id","subj":"T644","obj":"http://purl.org/sig/ont/fma/fma68646"},{"id":"A645","pred":"fma_id","subj":"T645","obj":"http://purl.org/sig/ont/fma/fma62925"},{"id":"A646","pred":"fma_id","subj":"T646","obj":"http://purl.org/sig/ont/fma/fma62925"}],"text":"SAs are predominant surface determinants for pathogen attachment, adherence and entry to host cells. Eleven representative vertebrate virus families utilize SAs as initial entry receptors or as attachment factors. Interaction of virus with SA-containing glycans is complex because virus SA-binding lectins are inherently of very low affinity. Viruses acquire enzymes to catalyze virion elution by regional depletion of binding receptors [56]. TM S glycoprotein recognizes oligosaccharide receptors. Using cryo-EM technology and observed structures of S glycoprotein trimers of CoV OC43 complexed with 9-O-acetylated SA, S glycoprotein was demonstrated to mediate virus adhesion and entry to host cells. All CoV S proteins show conservation in binding to 9-O-acetyl-SAs. MERS-CoV also recognizes 9-carbon sugar SA species. MERS-CoV S-1A binds to SA species. For example, SAα2,3- over SAα2,6-linkages expressed in human erythrocytes and mucins are preferentially targeted by MERS-CoV S-1A. Binding is hence blocked by SA modification to 5-N-NeuGc and 7, 9-O-NeuAc species [73]. For example, impairment of ACE2 receptor glycosylation does not influence S-glycoprotein-ACE2 interaction, however, SARS-CoV-2 virus entry into respiratory epithelial host cells was downregulated [133]. Changes in ACE2 N-glycans do not apparently influence interaction with the SARS-CoV S glycoprotein, but instead, impair viral S glycoprotein-mediated membrane fusion. The receptor glycan structures decide the entry of some human viruses. Changes in ACE2 receptor sialylation influences interaction affinity between virus ligands and host receptor. Inter-species or individual genetic variations such as drift and mutation may occur in SARS-CoVs. This explains currently emerging differences in CoV responses within the same population such as humans."}

LitCovid-PD-MONDO

{"project":"LitCovid-PD-MONDO","denotations":[{"id":"T255","span":{"begin":1192,"end":1200},"obj":"Disease"},{"id":"T256","span":{"begin":1354,"end":1362},"obj":"Disease"},{"id":"T257","span":{"begin":1714,"end":1718},"obj":"Disease"}],"attributes":[{"id":"A255","pred":"mondo_id","subj":"T255","obj":"http://purl.obolibrary.org/obo/MONDO_0005091"},{"id":"A256","pred":"mondo_id","subj":"T256","obj":"http://purl.obolibrary.org/obo/MONDO_0005091"},{"id":"A257","pred":"mondo_id","subj":"T257","obj":"http://purl.obolibrary.org/obo/MONDO_0005091"}],"text":"SAs are predominant surface determinants for pathogen attachment, adherence and entry to host cells. Eleven representative vertebrate virus families utilize SAs as initial entry receptors or as attachment factors. Interaction of virus with SA-containing glycans is complex because virus SA-binding lectins are inherently of very low affinity. Viruses acquire enzymes to catalyze virion elution by regional depletion of binding receptors [56]. TM S glycoprotein recognizes oligosaccharide receptors. Using cryo-EM technology and observed structures of S glycoprotein trimers of CoV OC43 complexed with 9-O-acetylated SA, S glycoprotein was demonstrated to mediate virus adhesion and entry to host cells. All CoV S proteins show conservation in binding to 9-O-acetyl-SAs. MERS-CoV also recognizes 9-carbon sugar SA species. MERS-CoV S-1A binds to SA species. For example, SAα2,3- over SAα2,6-linkages expressed in human erythrocytes and mucins are preferentially targeted by MERS-CoV S-1A. Binding is hence blocked by SA modification to 5-N-NeuGc and 7, 9-O-NeuAc species [73]. For example, impairment of ACE2 receptor glycosylation does not influence S-glycoprotein-ACE2 interaction, however, SARS-CoV-2 virus entry into respiratory epithelial host cells was downregulated [133]. Changes in ACE2 N-glycans do not apparently influence interaction with the SARS-CoV S glycoprotein, but instead, impair viral S glycoprotein-mediated membrane fusion. The receptor glycan structures decide the entry of some human viruses. Changes in ACE2 receptor sialylation influences interaction affinity between virus ligands and host receptor. Inter-species or individual genetic variations such as drift and mutation may occur in SARS-CoVs. This explains currently emerging differences in CoV responses within the same population such as humans."}

LitCovid-PD-CLO

LitCovid-PD-CHEBI

LitCovid-PD-GO-BP

{"project":"LitCovid-PD-GO-BP","denotations":[{"id":"T117","span":{"begin":80,"end":93},"obj":"http://purl.obolibrary.org/obo/GO_0044409"},{"id":"T118","span":{"begin":682,"end":695},"obj":"http://purl.obolibrary.org/obo/GO_0044409"},{"id":"T119","span":{"begin":1117,"end":1130},"obj":"http://purl.obolibrary.org/obo/GO_0070085"},{"id":"T120","span":{"begin":1429,"end":1444},"obj":"http://purl.obolibrary.org/obo/GO_0061025"},{"id":"T121","span":{"begin":1542,"end":1553},"obj":"http://purl.obolibrary.org/obo/GO_0097503"}],"text":"SAs are predominant surface determinants for pathogen attachment, adherence and entry to host cells. Eleven representative vertebrate virus families utilize SAs as initial entry receptors or as attachment factors. Interaction of virus with SA-containing glycans is complex because virus SA-binding lectins are inherently of very low affinity. Viruses acquire enzymes to catalyze virion elution by regional depletion of binding receptors [56]. TM S glycoprotein recognizes oligosaccharide receptors. Using cryo-EM technology and observed structures of S glycoprotein trimers of CoV OC43 complexed with 9-O-acetylated SA, S glycoprotein was demonstrated to mediate virus adhesion and entry to host cells. All CoV S proteins show conservation in binding to 9-O-acetyl-SAs. MERS-CoV also recognizes 9-carbon sugar SA species. MERS-CoV S-1A binds to SA species. For example, SAα2,3- over SAα2,6-linkages expressed in human erythrocytes and mucins are preferentially targeted by MERS-CoV S-1A. Binding is hence blocked by SA modification to 5-N-NeuGc and 7, 9-O-NeuAc species [73]. For example, impairment of ACE2 receptor glycosylation does not influence S-glycoprotein-ACE2 interaction, however, SARS-CoV-2 virus entry into respiratory epithelial host cells was downregulated [133]. Changes in ACE2 N-glycans do not apparently influence interaction with the SARS-CoV S glycoprotein, but instead, impair viral S glycoprotein-mediated membrane fusion. The receptor glycan structures decide the entry of some human viruses. Changes in ACE2 receptor sialylation influences interaction affinity between virus ligands and host receptor. Inter-species or individual genetic variations such as drift and mutation may occur in SARS-CoVs. This explains currently emerging differences in CoV responses within the same population such as humans."}

LitCovid-sentences

{"project":"LitCovid-sentences","denotations":[{"id":"T637","span":{"begin":0,"end":100},"obj":"Sentence"},{"id":"T638","span":{"begin":101,"end":213},"obj":"Sentence"},{"id":"T639","span":{"begin":214,"end":342},"obj":"Sentence"},{"id":"T640","span":{"begin":343,"end":442},"obj":"Sentence"},{"id":"T641","span":{"begin":443,"end":498},"obj":"Sentence"},{"id":"T642","span":{"begin":499,"end":702},"obj":"Sentence"},{"id":"T643","span":{"begin":703,"end":769},"obj":"Sentence"},{"id":"T644","span":{"begin":770,"end":821},"obj":"Sentence"},{"id":"T645","span":{"begin":822,"end":856},"obj":"Sentence"},{"id":"T646","span":{"begin":857,"end":987},"obj":"Sentence"},{"id":"T647","span":{"begin":988,"end":1075},"obj":"Sentence"},{"id":"T648","span":{"begin":1076,"end":1278},"obj":"Sentence"},{"id":"T649","span":{"begin":1279,"end":1445},"obj":"Sentence"},{"id":"T650","span":{"begin":1446,"end":1516},"obj":"Sentence"},{"id":"T651","span":{"begin":1517,"end":1626},"obj":"Sentence"},{"id":"T652","span":{"begin":1627,"end":1724},"obj":"Sentence"},{"id":"T653","span":{"begin":1725,"end":1829},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"SAs are predominant surface determinants for pathogen attachment, adherence and entry to host cells. Eleven representative vertebrate virus families utilize SAs as initial entry receptors or as attachment factors. Interaction of virus with SA-containing glycans is complex because virus SA-binding lectins are inherently of very low affinity. Viruses acquire enzymes to catalyze virion elution by regional depletion of binding receptors [56]. TM S glycoprotein recognizes oligosaccharide receptors. Using cryo-EM technology and observed structures of S glycoprotein trimers of CoV OC43 complexed with 9-O-acetylated SA, S glycoprotein was demonstrated to mediate virus adhesion and entry to host cells. All CoV S proteins show conservation in binding to 9-O-acetyl-SAs. MERS-CoV also recognizes 9-carbon sugar SA species. MERS-CoV S-1A binds to SA species. For example, SAα2,3- over SAα2,6-linkages expressed in human erythrocytes and mucins are preferentially targeted by MERS-CoV S-1A. Binding is hence blocked by SA modification to 5-N-NeuGc and 7, 9-O-NeuAc species [73]. For example, impairment of ACE2 receptor glycosylation does not influence S-glycoprotein-ACE2 interaction, however, SARS-CoV-2 virus entry into respiratory epithelial host cells was downregulated [133]. Changes in ACE2 N-glycans do not apparently influence interaction with the SARS-CoV S glycoprotein, but instead, impair viral S glycoprotein-mediated membrane fusion. The receptor glycan structures decide the entry of some human viruses. Changes in ACE2 receptor sialylation influences interaction affinity between virus ligands and host receptor. Inter-species or individual genetic variations such as drift and mutation may occur in SARS-CoVs. This explains currently emerging differences in CoV responses within the same population such as humans."}

2_test

{"project":"2_test","denotations":[{"id":"32604730-27185912-51944098","span":{"begin":438,"end":440},"obj":"27185912"},{"id":"32604730-23615615-51944099","span":{"begin":1071,"end":1073},"obj":"23615615"},{"id":"32604730-25348530-51944100","span":{"begin":1273,"end":1276},"obj":"25348530"},{"id":"T24249","span":{"begin":438,"end":440},"obj":"27185912"},{"id":"T62960","span":{"begin":1071,"end":1073},"obj":"23615615"},{"id":"T11948","span":{"begin":1273,"end":1276},"obj":"25348530"}],"text":"SAs are predominant surface determinants for pathogen attachment, adherence and entry to host cells. Eleven representative vertebrate virus families utilize SAs as initial entry receptors or as attachment factors. Interaction of virus with SA-containing glycans is complex because virus SA-binding lectins are inherently of very low affinity. Viruses acquire enzymes to catalyze virion elution by regional depletion of binding receptors [56]. TM S glycoprotein recognizes oligosaccharide receptors. Using cryo-EM technology and observed structures of S glycoprotein trimers of CoV OC43 complexed with 9-O-acetylated SA, S glycoprotein was demonstrated to mediate virus adhesion and entry to host cells. All CoV S proteins show conservation in binding to 9-O-acetyl-SAs. MERS-CoV also recognizes 9-carbon sugar SA species. MERS-CoV S-1A binds to SA species. For example, SAα2,3- over SAα2,6-linkages expressed in human erythrocytes and mucins are preferentially targeted by MERS-CoV S-1A. Binding is hence blocked by SA modification to 5-N-NeuGc and 7, 9-O-NeuAc species [73]. For example, impairment of ACE2 receptor glycosylation does not influence S-glycoprotein-ACE2 interaction, however, SARS-CoV-2 virus entry into respiratory epithelial host cells was downregulated [133]. Changes in ACE2 N-glycans do not apparently influence interaction with the SARS-CoV S glycoprotein, but instead, impair viral S glycoprotein-mediated membrane fusion. The receptor glycan structures decide the entry of some human viruses. Changes in ACE2 receptor sialylation influences interaction affinity between virus ligands and host receptor. Inter-species or individual genetic variations such as drift and mutation may occur in SARS-CoVs. This explains currently emerging differences in CoV responses within the same population such as humans."}

PMC:7352545 / 65825-67654 JSONTXT

Annnotations TAB JSON ListView MergeView

PMC:7352545 / 65825-67654 JSON TXT