How to find disulfides in protein structure using Pymol?
As shown in previous articles, Pymol  has several functions. In this article, we will show how to look for disulfide in protein crystal structures using Pymol.
Follow these steps:
- Open Pymol by typing
pymolin a terminal in Ubuntu and in Windows, by double-clicking the shortcut or by searching.
- Go to
File --> Open. Select a PDB structure to analyze.
- Set the color of the structure and background as you wish.
- Go to the right panel, click on the “S” column, it will show many functions.
disulfides --> sticks. You can select any representation as you want. Other options include lines and spheres.
- If there are any disulfides present in the structure, it will display on the screen.
Make sure you haven’t made sticks/lines/spheres hidden from the “all” row in the top right panel.
- The PyMOL Molecular Graphics System, Version 1.2r3pre, Schrödinger, LLC.
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