Cited by 386Monoclonal and Polyclonal Antibodies ResearchInflammasome and immune disordersEnzyme Structure and Function

Structural basis for PRYSPRY-mediated tripartite motif (TRIM) protein function

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James, Leo C., Keeble, Anthony H., Khan, Zahra, Rhodes, David A., Trowsdale, John·2007·Proceedings of the National Academy of Sciences

Abstract

The human tripartite motif (TRIM) family comprises 70 members, including HIV restriction factor TRIM5α and disease-associated proteins TRIM20 (pyrin) and TRIM21. TRIM proteins have conserved domain architecture but diverse cellular roles. Here, we describe how the C-terminal PRYSPRY domain mediates diverse TRIM functions. The crystal structure of TRIM21 PRYSPRY in complex with its target IgG Fc reveals a canonical binding interface comprised of two discrete pockets formed by antibody-like variable loops. Alanine scanning of this interface has identified the hot-spot residues that control TRIM21 binding to Fc; the same hot-spots control HIV/murine leukemia virus restriction by TRIM5α and mediate severe familial Mediterranean fever in TRIM20/pyrin. Characterization of the IgG binding site for TRIM21 PRYSPRY reveals TRIM21 as a superantigen analogous to bacterial protein A and suggests that an antibody bipolar bridging mechanism may contribute to the pathogenic accumulation of anti-TRIM21 autoantibody immune complex in autoimmune disease.

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Crossref · 10.1073/pnas.0609174104

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  • The SPRY domain of TRIM21 was solved in complex with the Fc region of IgG, revealing a well-defined pocket at the IgG binding site.

    “The SPRY domain of TRIM21, a major autoantigen in autoimmune diseases, was solved in complex with the Fc region of the immunoglobulin IgG 126 , revealing a well-defined pocket at the IgG binding site”

    From Targeted protein degradation: expanding the toolbox (2019) · cites this paper as [126]

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Research works printed but not linked: 2

  1. Lawley W, Doherty A, Denniss S, Chauhan D, Pruijn G, van Venrooij WJ, Lunec J, Herbert K (2000) Rheumatology (Oxford) 39:253-261.
  2. Sullivan KE, Jawad AF, Piliero LM, Kim N, Luan X, Goldman D, Petri M (2003) Rheumatology (Oxford) 42:446-452.

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Authors
James, L. C., Keeble, A. H., Khan, Z., Rhodes, D. A., & Trowsdale, J.
Affiliations
  • MRC Laboratory of Molecular Biology (GB)
  • University of Cambridge (GB)
Venue
Proceedings of the National Academy of Sciences
Published
2007-04-10
Volume
104
Issue
15
Pages
6200-6205
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2022754521
Cited by
386
References
50
Citations by year
2026: 20 · 2025: 26 · 2024: 27 · 2023: 25 · 2022: 22 · 2021: 24 · 2020: 26 · 2019: 27 · 2018: 11 · 2017: 18 · 2016: 17 · 2015: 15 · 2014: 19 · 2013: 19 · 2012: 18
FWCI
13.29
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • Medical Research Council
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Monoclonal and Polyclonal Antibodies Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
tripartite motif proteins, PRYSPRY domain, TRIM21, TRIM5α, IgG Fc binding, protein crystal structure, familial Mediterranean fever, superantigens, autoantibodies, immune complexes, autoimmune disease, protein-protein interaction
MeSH terms
SS-A Antigen, Amino Acid Sequence, Autoantibodies, Autoimmune Diseases, Binding Sites, Antibody, Calorimetry, Cell Line, Crystallography, DNA-Binding Proteins, Fluorescence Polarization, Multigene Family, Humans, Immunoglobulin G, Models, Molecular, Molecular Sequence Data, Nuclear Proteins, Protein Binding, Protein Conformation, Ribonucleoproteins, Structure-Activity Relationship, Gene Expression, Sequence Alignment, Protein Structure, Tertiary

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