Cited by 99Protein Structure and DynamicsMonoclonal and Polyclonal Antibodies Researchvaccines and immunoinformatics approaches

The H3 loop of antibodies shows unique structural characteristics

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Regep, Cristian, Georges, Guy, Shi, Jiye, Popovic, Bojana, Deane, Charlotte M.·2017·Proteins Structure Function and Bioinformatics

Abstract

The H3 loop in the Complementarity Determining Region of antibodies plays a key role in their ability to bind the diverse space of potential antigens. It is also exceptionally difficult to model computationally causing a significant hurdle for in silico development of antibody biotherapeutics. In this article, we show that most H3s have unique structural characteristics which may explain why they are so challenging to model. We found that over 75% of H3 loops do not have a sub-Angstrom structural neighbor in the non-antibody world. Also, in a comparison with a nonredundant set of all protein fragments over 30% of H3 loops have a unique structure, with the average for all of other loops being less than 3%. We further observed that this structural difference can be seen at the level of four residue fragments where H3 loops present numerous novel conformations, and also at the level of individual residues with Tyrosine and Glycine often found in energetically unfavorable conformations. Proteins 2017; 85:1311-1318. © 2017 Wiley Periodicals, Inc.

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Authors
Regep, C., Georges, G., Shi, J., Popovic, B., & Deane, C. M.
Affiliations
  • University of Oxford (GB)
  • Roche Pharma AG (Germany) (DE)
  • UCB Pharma (United Kingdom) (GB)
  • MedImmune Ltd., Department of Antibody Discovery and Protein Engineering Cambridge CB21 6GH United Kingdom
Corresponding author
Deane, Charlotte M.
Venue
Proteins Structure Function and Bioinformatics
Publisher
Wiley
Published
2017-04-06
Volume
85
Issue
7
Pages
1311-1318
ISSN
  • 0887-3585 (ISSN-L)
  • 1097-0134
OpenAlex
W2603247627
Cited by
99
References
38
Citations by year
2026: 8 · 2025: 9 · 2024: 11 · 2023: 14 · 2022: 16 · 2021: 13 · 2020: 7 · 2019: 13 · 2018: 7 · 2017: 1
FWCI
3.11
Type
journal article
Language
en
Open access
Locations
  • Proteins Structure Function and Bioinformatics (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
Engineering and Physical Sciences Research Council (EP/G037280/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › vaccines and immunoinformatics approaches
Keywords
hypervariable region, antibody structure, antibody-antigen binding
MeSH terms
Algorithms, Antibodies, Antigens, Binding Sites, Glycine, Humans, Immunoglobulin Heavy Chains, Protein Binding, Software, Temperature, Thermodynamics, Tyrosine, Protein Structure, Secondary, Protein Folding, Complementarity Determining Regions

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