beta-barrel
(=b barrel)
Protein motif in which a series of (typically amphipathic) beta sheets is arranged around a central pore. Example: voltage-gated ion channel.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • Beta barrel — 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… …   Wikipedia

  • Beta sheet — The β sheet (also β pleated sheet) is the second form of regular secondary structure in proteins consisting of beta strands connected laterally by three or more hydrogen bonds, forming a generally twisted, pleated sheet (the most common form of… …   Wikipedia

  • Barril beta — Saltar a navegación, búsqueda Barril beta de la porina específica para sucrosa de la bacteria Salmonella typhimurium, vista de lado. Las porinas son proteínas transmembrana con centros huecos a través de los cuales pueden difundir moléculas… …   Wikipedia Español

  • ATP synthase alpha/beta subunits — Pfam box Symbol = ATP synt ab N Name = ATP synthase alpha/beta family, beta barrel domain width = caption = Pfam= PF02874 InterPro= IPR004100 SMART= PROSITE= PDOC00137 SCOP = 1bmf TCDB = OPM family= OPM protein= PDB=PDB3|1fx0B:23 95 PDB3|1kmhB:23 …   Wikipedia

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  • Transmembrane protein — A transmembrane protein is a protein that spans the entire biological membrane. Transmembrane proteins aggregate and precipitate in water. They require detergents or nonpolar solvents for extraction, although some of them (beta barrels) can be… …   Wikipedia

  • Major urinary proteins — Tertiary structure of a mouse major urinary protein. The protein has eight beta sheets (yellow) arranged in a beta barrel open at one end, with alpha helices (red) at both the amino and carboxyl termini. The structure is resolved from Protein… …   Wikipedia

  • Porin (protein) — This article is about family of proteins. For other uses, see Porin. A sucrose specific porin from Salmonella typhimurium, a gram negative bacterium. PDB 1A0S …   Wikipedia

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