Crystal structures explain functional properties of two E. coli porins.
Cowan, S.W., Schirmer, T., Rummel, G., Steiert, M., Ghosh, R., Pauptit, R.A., Jansonius, J.N., Rosenbusch, J.P.(1992) Nature 358: 727-733
- PubMed: 1380671 
- DOI: 10.1038/358727a0
- Primary Citation of Related Structures:  
1PHO - PubMed Abstract: 
Porins form aqueous channels that aid the diffusion of small hydrophilic molecules across the outer membrane of Gram-negative bacteria. The crystal structures of matrix porin and phosphoporin both reveal trimers of identical subunits, each subunit consisting of a 16-stranded anti-parallel beta-barrel containing a pore ...