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Polyproline helix

A polyproline helix is a type of protein secondary structure which occurs in proteins comprising repeating proline residues. A left-handed polyproline II helix (PPII, poly-Pro II, κ-helix) is formed when sequential residues all adopt (φ,ψ) backbone dihedral angles of roughly (-75°, 150°) and have trans isomers of their peptide bonds. This PPII…

Standards, Polyproline II helix & Structural properties

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Polyproline II helix

PeptideCollagenHydroxyprolineGlycineSH3 domains
19 related topics

Structural properties

FRETProlyl isomerasesIon-mobility spectrometry
3 related topics

Overview

ProteinSecondary structureProlineDihedral anglesCis
8 related topics

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Polyproline II helix

Structural properties

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Polyproline helix

Nodes34
Edges33
Triples1
Avg. degree1.94
Density0.058824
Components1

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Polyproline helix

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is a · 1
Polyproline helix → type of protein secondary structure which occurs in proteins comprising repeating proline residues

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Important terminology

ppii helix proline peptide bonds dihedral angles polyproline cis poly-pro backbone roughly residues amino adopt ii trans also protein proteins

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SubjectPredicateObjectConfidenceSrc
Polyproline helixis atype of protein secondary structure which occurs in proteins comprising repeating proline residues0.90text

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