Cited by 144Protein Structure and DynamicsEnzyme Structure and FunctionMonoclonal and Polyclonal Antibodies Research

Second antibody modeling assessment (AMA-II)

Almagro, Juan C., Teplyakov, Alexey, Luo, Jinquan, Sweet, Raymond W., Kodangattil, Sreekumar, Hernandez‐Guzman, Francisco, Gilliland, Gary L.·2014·Proteins Structure Function and Bioinformatics

Abstract

To assess the state of the art in antibody 3D modeling, 11 unpublished high-resolution x-ray Fab crystal structures from diverse species and covering a wide range of antigen-binding site conformations were used as a benchmark to compare Fv models generated by seven structure prediction methodologies. The participants included: Accerlys Inc, Chemical Computer Group (CCG), Schrodinger, Jeff Gray's lab at John Hopkins University, Macromoltek, Astellas Pharma/Osaka University and Prediction of ImmunoGlobulin Structure (PIGS). The sequences of benchmark structures were submitted to the modelers and PIGS, and a set of models were generated for each structure. We provide here an overview of the organization, participants and main results of this second antibody modeling assessment (AMA-II). Also, we compare the results with the first antibody assessment published in this journal (Almagro et al., 2011;79:3050).

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Crossref · 10.1002/prot.24567

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  • The high degree of antibody sequence and structure conservation in the framework region and the five canonical loops leads to an overall high accuracy of antibody homology modelling.

    “The high degree of antibody sequence and structure conservation in the framework region and the five canonical loops leads to an overall high accuracy of antibody homology modelling [7].”
  • AMA II reported that the overall accuracy of modelling the entire antibody FV is 1.1 Å RMSD on average.

    “AMA II reported that the overall accuracy of modelling the entire antibody FV is 1.1 Å Root Mean Square Deviation (RMSD) on average, with the most challenging region being the CDRH3, which is modelled to >5 Å RMSD in some targets.”
  • CDRH3 is the most challenging region and is modelled to >5 Å RMSD in some targets.

    “AMA II reported that the overall accuracy of modelling the entire antibody FV is 1.1 Å Root Mean Square Deviation (RMSD) on average, with the most challenging region being the CDRH3, which is modelled to >5 Å RMSD in some targets.”
  • Despite different run times, antibody modelling tools produce comparable results.

    “Despite different run times, the tools produce comparable results as exemplified by the Antibody Modelling Assessment II [7], a benchmarking experiment in which blinded predictions using some of the aforementioned tools were conducted.”

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Authors
Almagro, J. C., Teplyakov, A., Luo, J., Sweet, R. W., Kodangattil, S., Hernandez‐Guzman, F., & Gilliland, G. L.
Affiliations
  • Pfizer (United States) (US)
  • Biotechnology Center of Excellence Janssen R&D, LLC. 1400 McKean Road Spring House PA 19477
  • Accelrys, Inc. San Diego CA
Corresponding author
Almagro, Juan C.
Venue
Proteins Structure Function and Bioinformatics
Publisher
Wiley
Published
2014-04-26
Volume
82
Issue
8
Pages
1553-1562
ISSN
  • 0887-3585 (ISSN-L)
  • 1097-0134
OpenAlex
W1891993075
Cited by
144
References
21
Citations by year
2026: 8 · 2025: 2 · 2024: 9 · 2023: 17 · 2022: 13 · 2021: 8 · 2020: 8 · 2019: 18 · 2018: 16 · 2017: 15 · 2016: 14 · 2015: 8 · 2014: 8
FWCI
6.15
Type
journal article
Language
en
Open access
closed
Locations
  • Proteins Structure Function and Bioinformatics (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
Keywords
Fab crystal structure, pigs
MeSH terms
Amino Acid Sequence, Animals, Binding Sites, Antibody, Humans, Immunoglobulin Fab Fragments, Models, Molecular, Molecular Sequence Data, Protein Conformation, Rabbits, Crystallography, X-Ray, Mice

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