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- Beta_barrel abstract "A beta barrel is a large beta-sheet that twists and coils to form a closed structure in which the first strand is hydrogen bonded to the last. Beta-strands in beta-barrels are typically arranged in an antiparallel fashion. Barrel structures are commonly found in porins and other proteins that span cell membranes and in proteins that bind hydrophobic ligands in the barrel center, as in lipocalins. Porin-like barrel structures are encoded by as many as 2–3% of the genes in Gram-negative bacteria.In many cases the strands contain alternating polar and hydrophobic amino acids, so that the hydrophobic residues are oriented into the interior of the barrel to form a hydrophobic core and the polar residues are oriented toward the outside of the barrel on the solvent-exposed surface. Porins and other membrane proteins containing beta barrels reverse this pattern, with hydrophobic residues oriented toward the exterior where they contact the surrounding lipids, and hydrophilic residues oriented toward the interior pore.All beta-barrels can be classified in terms of two integer parameters: the number of strands in the beta-sheet, n, and the "shear number", S, a measure of the stagger of the strands in the beta-sheet.These two parameters (n and S) are related to the inclination angle of the beta strands relative to the axis of the barrel.".
- Beta_barrel thumbnail Sucrose_porin_1a0s.png?width=300.
- Beta_barrel wikiPageExternalLink index.html.
- Beta_barrel wikiPageExternalLink scop.b.c.html.
- Beta_barrel wikiPageExternalLink Structure%20gallery%201.html.
- Beta_barrel wikiPageExternalLink all_beta.html.
- Beta_barrel wikiPageExternalLink frontpage.htm.
- Beta_barrel wikiPageExternalLink module1.html.
- Beta_barrel wikiPageID "5014146".
- Beta_barrel wikiPageRevisionID "603461274".
- Beta_barrel hasPhotoCollection Beta_barrel.
- Beta_barrel subject Category:Protein_folds.
- Beta_barrel subject Category:Protein_structure.
- Beta_barrel type Abstraction100002137.
- Beta_barrel type AngularShape113864763.
- Beta_barrel type Attribute100024264.
- Beta_barrel type Fold113907415.
- Beta_barrel type ProteinFolds.
- Beta_barrel type Shape100027807.
- Beta_barrel comment "A beta barrel is a large beta-sheet that twists and coils to form a closed structure in which the first strand is hydrogen bonded to the last. Beta-strands in beta-barrels are typically arranged in an antiparallel fashion. Barrel structures are commonly found in porins and other proteins that span cell membranes and in proteins that bind hydrophobic ligands in the barrel center, as in lipocalins.".
- Beta_barrel label "Barril beta".
- Beta_barrel label "Barril beta".
- Beta_barrel label "Beta barrel".
- Beta_barrel label "Tonneau bêta".
- Beta_barrel label "Β-Fass".
- Beta_barrel label "Βバレル".
- Beta_barrel sameAs Β-Fass.
- Beta_barrel sameAs Barril_beta.
- Beta_barrel sameAs Tonneau_bêta.
- Beta_barrel sameAs Βバレル.
- Beta_barrel sameAs Barril_beta.
- Beta_barrel sameAs m.0czw8f.
- Beta_barrel sameAs Q310424.
- Beta_barrel sameAs Q310424.
- Beta_barrel sameAs Beta_barrel.
- Beta_barrel wasDerivedFrom Beta_barrel?oldid=603461274.
- Beta_barrel depiction Sucrose_porin_1a0s.png.
- Beta_barrel isPrimaryTopicOf Beta_barrel.
