根據HKU Med篇文Mapping
Spike只係68%相似bat-SL-ZC45,當中Spike Subunit 1得39%。
Although amino acid sequence of the N-terminal domain of Spike subunit 1 of this novel coronavirus is approximately 66% identical to those of the SARS-related coronaviruses, and the core domain of the receptor binding domain of this novel coronavirus has about 68% amino acid identity with those of the SARS-related coronavirus, the protein sequence of the external subdomain region of receptor binding domain of Spike subunit 1 has only 39% identity, which might affect the choice of human receptor and therefore the biological behaviour of this virus (figure 4).
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