. . . . . . "A variant of the SARS-CoV-2 Spike receptor-binding domain (RBD, 195 residues) produced by one or more amino-acid substitutions from the wild-type Wuhan isolate (UniProt P0DTC2). This class is the type of the anchor FDO (A_r) of a FAIR Digital Twin; all observation FDOs link to it via `mac:isObservationOf` and collectively constitute the FDT." . "Spike RBD Variant" . "2026-05-22"^^ . . "2026-05-26T12:32:10Z"^^ . . . "Vocabulary term: mac:SpikeRBDVariant" . "RSA" . "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQD3w/IUb755GIzp3ueODYkgELhyq4Clygb5Kspge50xo+n8uC/IvXwi+ukRjEpdfX/JZ09yKUCJ2AMMr/QchrsP1Xhg9Q3fEZ4E12XqFd5jX00Qs0K5XZwjBaV8NdDTJW9I4gpcyh0cry7hSBAWHkXEkqbK+lQvR4UFAKejFq6u/wIDAQAB" . "6CYCA+IIvs+xj8bwypwYvT+z5I4ZdfHjtsCLlefejskXhJg31KZxzD77S1wu0FXU3yvGcBygBTjw6QqIBAR76JEX++Ar7TMzRgCWfxf1l8NBQUihIhy0rKqH8aBYeSOtWnxT2895w1LKq0Xar0tM6GvzkxkMUFQpH+y9OsxgP6Q=" . . .