The selectivity filter of
the KcsA K+ channel

Zhou, YF et al. (2001)
Nature, 414, 43-48.


STEP 2: Family PoreLogo
(Click here for examples of input/output files)

To upload your alignment file please click here.

a) Please specify a list-file of pore-lining residues:

The list-file of pore-lining residues should be in a PoreWalker-like format (see example file). Please click here to get instructions on how to prepare your list-file.

b) Please specify chain:

Please specify PDB identificative of the the protein chain to be used to generate your PoreLogo. The chain identificative **MUST** correspond to one of the chains included in the uploaded pore-lining residues list file.

c) Please specify the 3D-coordinates of the channel protein:

Please provide a text-file of the 3D-coordinates of the protein structure in the current wwPDB format

Please enter your E-Mail address:








The development of PoreLogo has been partly funded by the BBSRC and by the FEBS Short-Term Fellowships Program spacer


Related resources

Analysis of transmembrane protein
channels from 3D structure

Enzyme 3D structures organized by
the E.C. numbering hierarchy

Structural analyses of all PDB