Disulfide Bond Finder

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Disulfide Bond

In a protein in the oxidative environment, a covalent bond is often formed between a sulfur atom of two Cys residues, when the sulfur atoms exist in a short distance. The bond is called disulfide bond or S-S bond in short. A disulfide bond plays an important role in protein folding and stability.

In proteins with the known three-dimensional structure, the distances of two bonded sulfur atoms is known to be distributed between 1.8 - 2.0Å with a highest frequency at about 2.0 Å and dihedral angles of C-S-S-C around 90º.

Output Example

Disulfide bond is defined as follows in this site;

Developed by Ai Kamijyou
update: 10th, Aug., 2010
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