6M0J:
reference: Structure of the SARS-CoV-2 spike receptor-binding domain bound to the ACE2 receptor., Lan J, Ge J, Yu J, Shan S, Zhou H, Fan S, Zhang Q, Shi X, Wang Q, Zhang L, Wang X, Nature. 2020 Mar 30. pii: 10.1038/s41586-020-2180-5. doi:, 10.1038/s41586-020-2180-5. PMID: 32225176

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).