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Ribonuclease inhibitor
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Ribonuclease inhibitor is a large, acidic, leucine-rich repeat protein that forms extremely tight complexes with certain ribonucleases.
Ribonuclease I (yellow) and inhibitor (pink helixes) complex heterotetramer, Human.
Ribonuclease I (yellow) and inhibitor (pink helixes) complex heterotetramer, Human.
Beta sheet
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The beta sheet is a common motif of the regular protein secondary structure. Beta sheets consist of beta strands connected laterally by at least two or three backbone hydrogen bonds, forming a general
Ribonuclease inhibitor
…valine, isoleucine, methionine, tyrosine, and phenylalanine. RI is the classic leucine-rich repeat protein, consisting of alternating α-helices and β-strands along its backbone. These secondary structure elements wrap around in a curved, right-handed solenoid that resembles a horseshoe. The parallel β-strands…
Ramachandran (φ, ψ) plot of about 100,000 high-resolution data points, showing the broad, favorable region around the conformation typical for β-sheet
Ramachandran (φ, ψ) plot of about 100,000 high-resolution data points, showing the broad, favorable region around the conformation typical for β-sheet amino acid residues.
End-view of a 3-sided, left handed β-helix (PDB: 1QRE​)
End-view of a 3-sided, left handed β-helix (PDB: 1QRE​)
End-view of a 3-sided, right-handed β-helix (PDB: 2PEC​)
End-view of a 3-sided, right-handed β-helix (PDB: 2PEC​)