Cited by 100Genomics and Chromatin DynamicsDNA Repair MechanismsProtein Structure and Dynamics

A Zinc-binding Domain Involved in the Dimerization of RAG1

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Rodgers, Karla K., Bu, Zimei, Fleming, Karen G., Schatz, David G., Engelman, Donald M., Coleman, Joseph E.·1996·Journal of Molecular Biology

Abstract

Recombination-activating gene 1 (RAG1), as well as RAG2, are the only lymphoid-specific genes required for V(D)J recombination. RAG1 protein contains a C3HC4 zinc-binding motif (zinc ring finger) that binds two zinc ions. We have found that RAG1 contains additional zinc-binding motifs in the form of two separate C2H2 zinc finger sequences. One of the zinc fingers, in combination with the C3HC4 subdomain, forms a highly specific dimerization domain. A combination of biophysical techniques has been used to determine the energetics of association, the overall shape of the dimerization domain, and the relative orientation of the monomeric subunits within the dimer. These results provide direct evidence that a C3HC4 motif is involved in a protein-protein interaction, in this case via homodimer formation. In addition, the observation that the dimerization domain includes multi-class zinc binding motifs, namely both a zinc finger and a C3HC4 subdomain, has important implications for other C3HC4-containing proteins. The position of this dimerization domain in the N-terminal third of the RAG1 sequence of 1040 amino acid residues may have a significant influence on the activities associated with the C-terminal domains of the protein.

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Crossref · 10.1006/jmbi.1996.0382

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  • Only two cysteines of the zinc finger B (ZFB) C2H2 motif in RAG1 (residues 695-761) involved in its binding to RAG2 are perfectly conserved in the Transib TPases (motif 7).

    “Interestingly, only two cysteines of the zinc finger B (ZFB) C2H2 motif in RAG1 (residues 695–761) involved in its binding to RAG2 [30,31] are perfectly conserved in the Transib TPases (motif 7; see Figures 3 and Figure S3).”

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Research works printed but not linked: 2

  1. Cohn, E. J. & Edsall, J. T. (1943). Density and apparent specific volume of proteins. In Proteins, Amino Acids and Peptides as Ions and Dipolar Ions (Cohn, E. J. & Edsall, J. T., eds), pp. 370-381, Reinhold Publishing Corporation, New York.
  2. Laue, T. M., Shah, B., Ridgeway, T. M. & Pelletier, S. L. (1992). Computer-aided interpretation of analytical sedimentation data for proteins. In Analytical Ultracentrifugation in Biochemistry and Polymer Science (Harding, S. E., Rowe, A. J. & Horton, J. C., eds), pp. 90-125, Royal Society of Chemistry, Cambridge, UK.

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Authors
Rodgers, K. K., Bu, Z., Fleming, K. G., Schatz, D. G., Engelman, D. M., & Coleman, J. E.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
Coleman, Joseph E.
Venue
Journal of Molecular Biology
Publisher
Elsevier BV
Published
1996-07
Volume
260
Issue
1
Pages
70-84
ISSN
0022-2836 (ISSN-L)
OpenAlex
W2069716031
Cited by
100
References
47
Citations by year
2026: 1 · 2025: 1 · 2024: 2 · 2023: 3 · 2020: 1 · 2019: 1 · 2018: 1 · 2016: 3 · 2015: 4 · 2014: 3 · 2012: 1
FWCI
3.03
Type
journal article
Language
en
Open access
Locations
  • Journal of Molecular Biology (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of General Medical Sciences (F32GM016769, GM 22778, P01GM022778)
  • National Institute of Allergy and Infectious Diseases (AI 32524)
  • National Institute of Diabetes and Digestive and Kidney Diseases (DK09070)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
Keywords
RAG1, C2H2 zinc finger, protein dimerization, homodimerization, V(D)J recombination, zinc-binding domain, protein-protein interaction
MeSH terms
Amino Acid Sequence, Base Sequence, Binding Sites, Circular Dichroism, Models, Molecular, Molecular Sequence Data, Protein Conformation, Proteins, Scattering, Radiation, Zinc, Zinc Fingers, Sequence Homology, Amino Acid, Homeodomain Proteins

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