To open a PDB file when you know the ID:

  1. Choose File > Open from PDB or press Ctrl/Cmd+D. For an additional shortcut to this command, see The Welcome Screen.
  1. Type a valid 4-digit ID in the text box. All PDB IDs consist of a single-digit number followed by three additional characters. These three characters may consist of numbers and/or letters of the English alphabet.

  1. (optional) If you plan to enter additional IDs, check Open another.
  1. Press OK. The structure will open in Protean 3D. If you checked Open another in the previous step, the Open from PDB dialog will re-open automatically.

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