There are four ways of querying the PDB using ICM and keywords. OPTION 3 allows for a much more refined search.

OPTION 1:

• Select Edit/PDB search and the "Find PDB Entries by Keyword" data entry window will be displayed.
• Enter a keyword or PDB code into the Keywords data entry field.

NOTE: If a keyword has been entered previously it will be available by clicking on the drop-down button.

• Click the OK button and a list of related PDB entries will be displayed in the PDBSearchResults section of the graphical user interface.

OPTION 2:

Use the pdb search tab on the tool bar. Select which parameter you wish to search by. Enter some text and this will be searched against the PDB.

Seq Pattern- Enter a protein sequence and this option will tell you whether a protein structure exists in the PDB for that sequence.

Close Match - Enter a protein sequence and this option will tell you which sequences are similar to your entered sequence.

Homology - Enter a protein sequence and homolopgous proteins in the PDB will be displayed in a table.

Ligand Code - Enter the PDB ligand code.(e.g. 1crn)

OPTION 3:

• Select Edit/PDB search by field and the ** Find PDB Entries by Keywords and Fields ** data entry window will be displayed.

• Enter your search words into the appropriate fields: Author; Compound; PDB Header; Experiment Type; Resolution Better Than
• Click the OK button.

OPTION 4:

• Select File/Load and the PDB data entry window will be displayed.
• Enter the PDB code and select the source of your PDB file.