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3D Molecular Structure & Binding Viewer
Search by protein or gene name, PDB ID, UniProt accession, drug or chemical name, PubChem CID, or SMILES. Open the selected result directly in the same interactive 3D workspace.
Phase 4: experimental PDB residue mapping now uses the RCSB Sequence Coordinates service. UniProt/RefSeq positions are translated to PDB instance
label_asym_id and label_seq_id, avoiding dependence on author residue numbering.1. Search molecular structure databases
Search RCSB PDB, UniProt/AlphaFold DB and PubChem from one place.
RCSB PDB: experimental structures & complexes
UniProt / AlphaFold DB: proteins & predicted structures
PubChem: drugs & small molecules
Interactive 3D view
The 3D structure will appear here.
Variant residue mapping
VariantResidue—
Structure source—
Secondary structure—
Nearest bound molecule—
Nearest distance—
Mapped chain—
Waiting for a structure.
Mapped with the RCSB Sequence Coordinates service.
2. Bound molecule
For experimental PDB complexes, water is excluded and deposited bound molecules can be selected. AlphaFold and PubChem views do not imply observed binding.
Alpha helix
Beta sheet
Loop / coil
Observed bound molecule (PDB)
Nearby target residues
Closest contacts
3. Binding-site contacts
- No ligand selected.
How to read the view
Alpha helices are cyan, beta sheets are gold, and loops/coils are slate. The selected molecule is shown with atom colors. Nearby target residues are highlighted in claret, and dashed lines show the closest heavy-atom contacts inside the chosen cutoff.