Spike glycoprotein trimer of SARS-CoV-2 with one receptor-binding domain raised into the open, receptor-accessible position. Surface glycans are included as separate objects.

Scientifically accurate model built directly from the experimental atomic coordinates of Protein Data Bank entry 6VYB (cryo-electron microscopy, 3.20 angstrom resolution), biological assembly 1. Source organism: Severe acute respiratory syndrome coronavirus 2. Only atoms that were resolved in the experiment are represented; nothing has been added or invented.

MODEL
- Molecular surface of every chain as a separate, named object (3 chains, 1 distinct component)
- Surface glycans (sugar chains) as separate objects
- 106,856 polygons, 106,946 vertices; all quads
- Every surface mesh is closed and manifold (no holes, no loose or overlapping vertices)
- One material per component (Principled BSDF); colours are easy to change. No textures needed
- Scale: 1 unit = 1 nanometer. Model centred at the origin, transforms clean, objects grouped under one parent

FORMATS
- Blender 4.0 (.blend), native, with the studio lighting and camera used for the previews (Cycles)
- FBX (.fbx)
- OBJ (.obj + .mtl)
- glTF 2.0 binary (.glb)
- USD (.usdc)
- STL (.stl), geometry only

Preview images were rendered in Blender Cycles. The wireframe image shows the actual mesh.

Structure reference: PDB 6VYB; Walls et al., Cell, 2020 (doi:10.1016/j.cell.2020.02.058). PDB structure data are in the public domain (CC0 1.0).