• Thumbnail for Beta sheet
    The beta sheet (β-sheet, also β-pleated sheet) is a common motif of the regular protein secondary structure. Beta sheets consist of beta strands (β-strands)...
    27 KB (3,137 words) - 20:42, 2 March 2025
  • and a C-terminus. Many proteins may adopt a beta sheet as part of their secondary structure. In beta sheets, sections of a single polypeptide may run side-by-side...
    6 KB (718 words) - 08:27, 1 July 2024
  • Thumbnail for Beta barrel
    In protein structures, a beta barrel (β barrel) is a beta sheetsheet) composed of tandem repeats that twists and coils to form a closed toroidal structure...
    15 KB (1,669 words) - 19:01, 2 November 2024
  • Thumbnail for Beta-propeller
    Together the beta-sheets form a funnel-like active site. Each beta-sheet typically has four anti-parallel β-strands arranged in the beta-zigzag motif...
    17 KB (2,034 words) - 05:31, 2 June 2025
  • adjacent to, but not necessarily geometrically aligned with, each other. The beta sheet is anti-parallel, and alternate strands run in the same directions. The...
    7 KB (804 words) - 08:29, 8 May 2025
  • Thumbnail for Beta hairpin
    (the N-terminus of one sheet is adjacent to the C-terminus of the next), and linked by a short loop of two to five amino acids. Beta hairpins can occur in...
    11 KB (1,475 words) - 01:04, 21 May 2025
  • A beta bulge can be described as a localized disruption of the regular hydrogen bonding of beta sheet by inserting extra residues into one or both hydrogen...
    6 KB (692 words) - 10:59, 28 May 2025
  • Thumbnail for LSm
    superfamilies, and folds. The LSm protein structure is an example of a small beta sheet folded into a short barrel. Individual LSm proteins assemble into a six...
    38 KB (5,026 words) - 01:54, 28 May 2025
  • Thumbnail for Alpha sheet
    Corey in 1951. The hydrogen bonding pattern in an alpha sheet is similar to that of a beta sheet, but the orientation of the carbonyl and amino groups in...
    15 KB (1,981 words) - 17:45, 23 August 2023
  • pangolins. Beta-keratins were named due to their composition of stacked beta sheets in the epidermal stratum corneum, distinguishing them from alpha-keratins...
    8 KB (858 words) - 03:03, 17 March 2025
  • Thumbnail for Amyloid beta
    Amyloid beta (Aβ, Abeta or beta-amyloid) denotes peptides of 36–43 amino acids that are the main component of the amyloid plaques found in the brains...
    48 KB (5,291 words) - 22:30, 25 May 2025
  • Thumbnail for Linus Pauling
    biological molecules, and showed the importance of the alpha helix and beta sheet in protein secondary structure. Pauling's approach combined methods and...
    143 KB (14,164 words) - 07:24, 4 June 2025
  • Thumbnail for Leucine-rich repeat
    horseshoe shape with an interior parallel beta sheet and an exterior array of helices. One face of the beta sheet and one side of the helix array are exposed...
    11 KB (1,070 words) - 16:42, 9 September 2024
  • Thumbnail for Rossmann fold
    alternating beta strands and alpha helical segments where the beta strands are hydrogen bonded to each other forming an extended beta sheet and the alpha...
    13 KB (1,373 words) - 12:47, 10 September 2024
  • Thumbnail for ATP-dependent Clp protease adaptor protein ClpS
    followed by the central seven-residue beta-strand, which is flanked by two other beta-strands in a small beta-sheet. Endopeptidase Clp Clp protease family...
    4 KB (407 words) - 13:46, 15 October 2020
  • Thumbnail for Alpha/beta hydrolase superfamily
    common fold. The core of each enzyme is an alpha/beta-sheet (rather than a barrel), containing 8 beta strands connected by 6 alpha helices. The enzymes...
    4 KB (360 words) - 15:11, 30 July 2024
  • Thumbnail for Protein structure prediction
    a likely helix may still be able to adopt a beta-strand conformation if it is located within a beta-sheet region of the protein and its side chains pack...
    74 KB (9,238 words) - 21:02, 23 May 2025
  • Thumbnail for Protein secondary structure
    most common secondary structural elements are alpha helices and beta sheets, though beta turns and omega loops occur as well. Secondary structure elements...
    29 KB (3,150 words) - 15:57, 30 April 2025
  • Thumbnail for Protein contact map
    adjacent to the diagonal. Antiparallel beta sheets appear in HB plot as cross-diagonal. Parallel beta sheets appears in the HB plot as parallel to the...
    16 KB (1,979 words) - 07:20, 8 December 2024
  • Thumbnail for Protein folding
    of secondary structure are the structures known as alpha helices and beta sheets that fold rapidly because they are stabilized by intramolecular hydrogen...
    76 KB (8,708 words) - 09:25, 13 March 2025
  • Thumbnail for Beta particle
    A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electron or positron emitted by the radioactive decay...
    14 KB (1,522 words) - 06:37, 4 June 2025
  • proteins aggregate into distinctive fibrillar forms with a beta-sheet structure. The beta-sheet form of amyloid is proteolysis-resistant, meaning it can...
    54 KB (5,456 words) - 19:57, 29 May 2025
  • beta and IL-1 receptor antagonist). The crystal structures of IL1A and IL1B have been solved, showing them to share the same 12-stranded beta-sheet structure...
    45 KB (4,194 words) - 12:36, 2 May 2024
  • Thumbnail for ATPase
    Importantly, while all natural ATPases have some beta-sheet structure, the designed "Alternative ATPase" lacks beta sheet structure, demonstrating that this life-essential...
    18 KB (2,096 words) - 02:28, 2 June 2025
  • Thumbnail for Silk
    weight. Silk fibroin contains hydrophobic beta sheet blocks, interrupted by small hydrophilic groups. The beta-sheets contribute much to the high mechanical...
    82 KB (8,721 words) - 07:00, 21 May 2025
  • Thumbnail for Alpha-synuclein
    During the process of seeded nucleation, alpha-synuclein adopts a cross-beta sheet structure characteristic of amyloid fibrils. The human alpha-synuclein...
    84 KB (9,503 words) - 18:44, 3 June 2025
  • Thumbnail for Top7
    beta sheets, β, in its secondary structure. Overall, the structure consists of two alpha helices packed on a five-stranded anti-parallel beta sheet....
    7 KB (830 words) - 04:10, 2 June 2025
  • in APP processing and degradation. Amyloid beta monomers are soluble and contain short regions of beta sheet and polyproline II helix secondary structures...
    75 KB (9,005 words) - 23:54, 22 May 2025
  • Thumbnail for PDZ domain
    PDZ domain by beta sheet augmentation. This means that the beta sheet in the PDZ domain is extended by the addition of a further beta strand from the...
    34 KB (3,565 words) - 02:04, 3 December 2023
  • Thumbnail for Alpha helix
    steel, including ubiquitin and a potassium channel tetramer. 310 helix Beta sheet Davydov soliton Folding (chemistry) Knobs into holes packing Pi helix...
    46 KB (5,204 words) - 13:21, 31 March 2025