PMC:7784834 / 4469-4680 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T36","span":{"begin":0,"end":211},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"However, the host proteases have been observed to cause cleavage within the fusion domain (S2), which leads to irreversible conformational changes, activating the protein for membrane fusion (Zhou et al., 2020)."}