title: The structure of porin from Paracoccus denitrificans at 3.1 A resolution.
abstract: The crystal structure of a non-specific porin from Paracoccus denitrificans at 3.1 A resolution has been solved by molecular replacement using the porin from Rhodopseudomonas blastica as the search model. Paracoccus porin is very similar to other non-specific porins of known structure: a trimer of 16 stranded beta-barrels each with a central pore constricted by a long extracellular loop folding back against the barrel wall. The distinctive distribution of charged residues of this non-specific porin contributes to understanding the relation between structure and ion selectivity.
authors.affiliation: Universität Konstanz, Fakultät für Biologie, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Hirsch
authors.forename: J
authors.initials: J
authors.lastname: Breed
authors.forename: K
authors.initials: K
authors.lastname: Saxena
authors.forename: O M
authors.initials: OM
authors.lastname: Richter
authors.forename: B
authors.initials: B
authors.lastname: Ludwig
authors.forename: K
authors.initials: K
authors.lastname: Diederichs
authors.forename: W
authors.initials: W
authors.lastname: Welte
mesh_terms: D000595:Amino Acid Sequence; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D010231:Paracoccus denitrificans; D018272:Porins / Q000737:chemistry*; D017433:Protein Structure, Secondary; D012241:Rhodopseudomonas
chemical_list: D018272:Porins