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Beta Strand definitions

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  • Beta Strand
    Extended zigzag segment of protein backbone with alternating R group orientation and periodic structure repeating every two residues.
  • Secondary Structure
    Level of protein organization involving recurring backbone conformations such as extended zigzag or coiled arrangements.
  • R Group
    Side chain of an amino acid, alternating up and down in extended zigzag protein segments.
  • Rise
    Distance covered per amino acid residue in a protein segment, measuring 3.5 Å in extended zigzag conformations.
  • Pitch
    Length of one periodic repeat in a protein segment, measuring 7 Å in extended zigzag structures.
  • Alpha Helix
    Coiled protein backbone conformation with a rise of 1.5 Å per residue and a pitch of 5.4 Å.
  • Amino Acid Residue
    Individual building block in a protein chain, contributing to the overall length and periodicity of structural segments.
  • C Terminal
    End of a protein segment toward which broad arrows point in extended zigzag depictions.
  • N Terminal
    Starting end of a protein segment, opposite the direction of broad arrows in extended zigzag depictions.
  • Hydrogen Bond
    Interaction stabilizing extended zigzag protein segments, oriented perpendicular to the backbone direction.
  • Peptide Backbone
    Continuous chain of atoms in a protein, adopting extended zigzag or coiled conformations.
  • Beta Pleated Sheet
    Structure formed by multiple extended zigzag segments, stabilized by perpendicular hydrogen bonds.
  • Periodic Structure
    Repeating pattern in protein segments, occurring every two residues in extended zigzag conformations.
  • Length
    Total distance of a protein segment, calculated by multiplying the number of residues by the rise.
  • Broad Arrow
    Visual representation of extended zigzag protein segments, indicating direction toward the C terminal.