beta sheets
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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
Beta helix — A beta helix is a protein structure formed by the association of parallel beta strands in a helical pattern with either two or three faces. The structure is stabilized by inter strand hydrogen bonds, protein protein interactions, and sometimes… … Wikipedia
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-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
beta-helix — (=b helix) (solenoid) Protein motif comprising a large right handed coil (or super helix), containing either 2 or 3 beta sheets … Dictionary of molecular biology
Beta decay — Nuclear physics Radioactive decay Nuclear fission Nuclear fusion Classical decays … Wikipedia
Beta-propeller — A beta propeller is a type of all β protein architecture characterized by 4 8 blade shaped beta sheets arranged toroidally around a central axis. Each sheet typically has four antiparallel β strands twisted so that the first and fourth sheets are … Wikipedia
beta-arch — (=b arch) Protein motif comprising two adjacent antiparallel beta strands joined by a coil that are part of different sheets, usually forming a beta sandwich … Dictionary of molecular biology
Beta-keratin — β keratin or beta keratin (not to be confused with β carotene) is in contrast to alpha keratin, a fibrous protein rich in alpha helices, rich in stacked β pleated sheets. β keratin adds much more rigidity to reptilian skin than alpha keratin does … Wikipedia
beta-sheet — be·ta sheet .shēt n the structural arrangement of many proteins in which two or more short regions of the polypeptide chain align adjacently and are stabilized by hydrogen bonds into sheets with a pleated or accordionlike appearance called also… … Medical dictionary
