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Severe acute respiratory syndrome (SARS) coronavirus (SARS-CoV) is a newly identified member of Family Coronaviridae. Coronavirus envelope spike protein S is a class I viral fusion protein which is characterized by the existence of two heptad repeat regions (HR1 and HR2) (forming a complex called fusion core). Here we report that by using in vitro bio-engineering techniques, SARS-CoV HR1 and HR2 bind...
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