About: Hydrogen bond   Sponge Permalink

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Hydrogen bonds are a relatively weak type of chemical bond. They're much weaker than the peptide bonds that hold together the protein's backbone or the covalent bond found in a disulfide bridge. But hydrogen bonds are numerous, and they help determine both the secondary structure -- helixes and sheets -- of a protein and its overall shape (or "tertiary structure"). Hydrogen bonds can also occur between sidechains and the backbone atoms of helixes, sheets, and loops.

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  • Hydrogen bond
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  • Hydrogen bonds are a relatively weak type of chemical bond. They're much weaker than the peptide bonds that hold together the protein's backbone or the covalent bond found in a disulfide bridge. But hydrogen bonds are numerous, and they help determine both the secondary structure -- helixes and sheets -- of a protein and its overall shape (or "tertiary structure"). Hydrogen bonds can also occur between sidechains and the backbone atoms of helixes, sheets, and loops.
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abstract
  • Hydrogen bonds are a relatively weak type of chemical bond. They're much weaker than the peptide bonds that hold together the protein's backbone or the covalent bond found in a disulfide bridge. But hydrogen bonds are numerous, and they help determine both the secondary structure -- helixes and sheets -- of a protein and its overall shape (or "tertiary structure"). The shape of a helix is determined by the regular pattern of hydrogen bonds between the backbone atoms in the amino acids (or segments in the helix. Similarly, the "flat" structure of sheets occurs when hydrogen bonds form between the backbone atoms of two or more groups of segments. Hydrogen bonds can also form between the sidechain of one segment and the sidechains of other segments. Often, the sidechains of three or more segments are bonded together to form a "hydrogen bond network". This type of bonding helps to stabilize the protein, especially when it occurs on the surface of the protein. In some design puzzles, hydrogen bond networks receive a special bonus. Hydrogen bonds can also occur between sidechains and the backbone atoms of helixes, sheets, and loops.
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