The 3D Structure Viewer is opened automatically when you open a PDB or MMDB file.
For example, open $UGENE/data/samples/PDB/1CF7.PDB. The 3D Structure Viewer adds a view to the upper part of the Sequence View:
![](/wiki/download/attachments/16125395/Opening 3D Structure Viewer.png)
Notice the Links button on the toolbar. When you click the button the menu appears with quick links to online resources with detailed information about the molecule opened:
- PDB Wiki
- RSCB PDB
- PDBsum
- NCBI MMDB
Note that if you’re online, you can access the Protein Data Bank directly from UGENE and load a required file by its PDB ID (see Fetching Data from Remote Database for details).
Hint
Don’t forget to select the correct database (PDB) while fetching.