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. 2023 Jan 19;15(2):284. doi: 10.3390/v15020284

Figure 9.

Figure 9

Comparison of the electrostatic surface potential of trimeric spikes of SARS-CoV-2 variants. NTD, N-terminal domain. The three receptor binding domains (RBD) are localized with a yellow dashed circle. The value of the electrostatic surface potential (positive) is indicated for each virus. Note that the NTD of Omicron is less electropositive than that of Delta. However, the surface of Omicron is globally more electropositive than Delta. These structures were retrieved and modeled from pdb file 7BNM.