Cited by 15,320Protein Structure and DynamicsEnzyme Structure and FunctionRNA and protein synthesis mechanisms

Dictionary of protein secondary structure: Pattern recognition of hydrogen‐bonded and geometrical features

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Kabsch, Wolfgang, Sander, Christian·1983·Biopolymers

Abstract

For a successful analysis of the relation between amino acid sequence and protein structure, an unambiguous and physically meaningful definition of secondary structure is essential. We have developed a set of simple and physically motivated criteria for secondary structure, programmed as a pattern‐recognition process of hydrogen‐bonded and geometrical features extracted from x‐ray coordinates. Cooperative secondary structure is recognized as repeats of the elementary hydrogen‐bonding patterns “turn” and “bridge.” Repeating turns are “helices,” repeating bridges are “ladders,” connected ladders are “sheets.” Geometric structure is defined in terms of the concepts torsion and curvature of differential geometry. Local chain “chirality” is the torsional handedness of four consecutive C α positions and is positive for right‐handed helices and negative for ideal twisted β‐sheets. Curved pieces are defined as “bends.” Solvent “exposure” is given as the number of water molecules in possible contact with a residue. The end result is a compilation of the primary structure, including SS bonds, secondary structure, and solvent exposure of 62 different globular proteins. The presentation is in linear form: strip graphs for an overall view and strip tables for the details of each of 10.925 residues. The dictionary is also available in computer‐readable form for protein structure prediction work.

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Crossref · 10.1002/bip.360221211

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  • pDockQ was created by fitting a sigmoidal curve to the DockQ scores using the average interface plDDT multiplied with the logarithm of the number of interface contacts.

    “This score is created by fitting a sigmoidal curve (Fig. 2c) using “curve_fit” from SciPy v.1.4.156, to the DockQ scores using the average interface plDDT multiplied with the logarithm of the number of interface contacts, with the following sigmoidal equation:”
  • After about 300 ps of simulation, a kink of the helix around the E329 position with insertion of a turn was evidenced by DSSP analysis.

    “After about 300 ps of simulation the kink of the helix around the E329 position, with insertion of a turn, was evidenced by the DSSP analysis (58).”

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Authors
Kabsch, W., & Sander, C.
Affiliations
  • Max Planck Society (DE)
  • Max Planck Institute for Medical Research (DE)
Venue
Biopolymers
Publisher
Wiley
Published
1983-12
Volume
22
Issue
12
Pages
2577-2637
ISSN
  • 0006-3525 (ISSN-L)
  • 1097-0282
OpenAlex
W2008708467
Cited by
15,320
References
36
Citations by year
2026: 445 · 2025: 615 · 2024: 617 · 2023: 614 · 2022: 625 · 2021: 599 · 2020: 583 · 2019: 571 · 2018: 512 · 2017: 474 · 2016: 511 · 2015: 479 · 2014: 548 · 2013: 595 · 2012: 558
FWCI
6.84
Type
journal article
Language
en
Open access
Locations
  • Biopolymers (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion, cc-by)
  • Max Planck Digital Library (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
protein secondary structure, hydrogen bonding patterns, helix, beta-sheet, turns, bridges, torsion, curvature, solvent exposure, pattern recognition, globular proteins, sequence-structure relationship, protein structure prediction
MeSH terms
Amino Acid Sequence, Hydrogen Bonding, Protein Conformation, Proteins

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