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{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7443692","sourcedb":"PMC","sourceid":"7443692","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7443692","text":"We also analyzed our generated mass spectrometry data for the presence of O-linked glycans based on our glycomic findings (Figure S5; Table S4) and a recent manuscript suggesting significant levels of O-glycosylation of S1 and S2 when expressed independently (Shajahan et al., 2020). We were able to confirm sites of O-glycan modification with microheterogeneity observed for the vast majority of these sites (Table S9). However, occupancy at each site, determined by spectral counts, was observed to be very low (below 4%), except for Thr0323, which had a modestly higher but still low 11% occupancy (Figure S6; Table S10).","tracks":[{"project":"LitCovid-sample-CHEBI","denotations":[{"id":"T158","span":{"begin":83,"end":90},"obj":"Chemical"},{"id":"T159","span":{"begin":317,"end":325},"obj":"Chemical"}],"attributes":[{"id":"A158","pred":"chebi_id","subj":"T158","obj":"http://purl.obolibrary.org/obo/CHEBI_18154"},{"id":"A159","pred":"chebi_id","subj":"T159","obj":"http://purl.obolibrary.org/obo/CHEBI_59521"},{"subj":"T158","pred":"source","obj":"LitCovid-sample-CHEBI"},{"subj":"T159","pred":"source","obj":"LitCovid-sample-CHEBI"}]},{"project":"LitCovid-sample-sentences","denotations":[{"id":"T131","span":{"begin":0,"end":283},"obj":"Sentence"},{"id":"T132","span":{"begin":284,"end":420},"obj":"Sentence"},{"id":"T133","span":{"begin":421,"end":624},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"attributes":[{"subj":"T131","pred":"source","obj":"LitCovid-sample-sentences"},{"subj":"T132","pred":"source","obj":"LitCovid-sample-sentences"},{"subj":"T133","pred":"source","obj":"LitCovid-sample-sentences"}]},{"project":"LitCovid-sample-PD-IDO","denotations":[{"id":"T77","span":{"begin":308,"end":313},"obj":"http://purl.obolibrary.org/obo/BFO_0000029"},{"id":"T78","span":{"begin":403,"end":408},"obj":"http://purl.obolibrary.org/obo/BFO_0000029"},{"id":"T79","span":{"begin":448,"end":452},"obj":"http://purl.obolibrary.org/obo/BFO_0000029"}],"attributes":[{"subj":"T77","pred":"source","obj":"LitCovid-sample-PD-IDO"},{"subj":"T78","pred":"source","obj":"LitCovid-sample-PD-IDO"},{"subj":"T79","pred":"source","obj":"LitCovid-sample-PD-IDO"}]},{"project":"LitCovid-sample-PD-GO-BP-0","denotations":[{"id":"T61","span":{"begin":203,"end":216},"obj":"http://purl.obolibrary.org/obo/GO_0070085"}],"attributes":[{"subj":"T61","pred":"source","obj":"LitCovid-sample-PD-GO-BP-0"}]},{"project":"LitCovid-sample-GO-BP","denotations":[{"id":"T57","span":{"begin":203,"end":216},"obj":"http://purl.obolibrary.org/obo/GO_0070085"}],"attributes":[{"subj":"T57","pred":"source","obj":"LitCovid-sample-GO-BP"}]},{"project":"2_test","denotations":[{"id":"32841605-32363391-19659517","span":{"begin":277,"end":281},"obj":"32363391"}],"attributes":[{"subj":"32841605-32363391-19659517","pred":"source","obj":"2_test"}]}],"config":{"attribute types":[{"pred":"source","value type":"selection","values":[{"id":"LitCovid-sample-CHEBI","color":"#93abec","default":true},{"id":"LitCovid-sample-sentences","color":"#c5ec93"},{"id":"LitCovid-sample-PD-IDO","color":"#ec93df"},{"id":"LitCovid-sample-PD-GO-BP-0","color":"#93ecdf"},{"id":"LitCovid-sample-GO-BP","color":"#ecc593"},{"id":"2_test","color":"#ab93ec"}]}]}}