Channel Finder

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PyMOL compatible
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Outer probe radius:

Inner probe radius:

Choose one of the following options:
Minimum accessible volume of a channel:
Minimum percentage of total volume:
Get the N largest channels:


Recent runs

Job id: 2017.apr28.56e  

Job id: 2017.apr27.dd1 PDB id: 3ezs  

Job id: 2017.apr27.f86  

Channel Finder – possible the most useful program here. The channel finder can pull interesting channels out from a structure. For example, the exit tunnel from the ribosome, the internal cavity of GroEL and many others. Channel finder works by calculating the shell volume (A) and then subtracts the solvent-excluded volume (B) from the shell volume (A) the resulting volume is the solvent volume (C). Next it only takes the solvent volume that is connected to a point specified by you.

'3V: cavity, channel and cleft volume calculator and extractor' (free text)
Nucleic Acids Res. 2010 July 1; 38(Web Server issue): W555–W562
by Neil R. Voss and Mark Gerstein
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If you find this useful or want more functionality please contact Neil <vossman77 [at]>
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