ArticleProtein science : a publication of the Protein Society2026
Optimization of antibody binding by adjusting thermodynamic stability during the maturation of antibody affinities.
Article in Protein science : a publication of the Protein Society, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Optimization of antibody binding by adjusting thermodynamic stability during the maturation of antibody affinities.Protein science : a publication of the Protein Society · 2026Article
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8 authors.
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Abstract
Somatic mutations and antibody clone selection occur in B-cell hyper-evolution over extremely brief periods of time. Herein, we developed a technique for antibody screening by immunizing alpacas with antigens and observing antibody sequence transitions over time, a method we named Tracking the Evolution of Antibodies over time. This technique allows the observation of sequence transitions of somatic mutations in antibody populations originating from the same genome. The accumulation of somatic mutations was significantly associated with enhanced antigen-binding capacity and reduced stability in clusters. In comparison with the first clone to emerge in this cluster, numerous clones exhibited a decline in thermal stability, with a maximum variation of 21°C. Somatic mutations within the clusters demonstrating high similarity were observed to be concentrated in CDR-1, CDR-2, and FR-3. This suggests that these mutations have a significant impact on binding capacity and stability. However, the correlation between antigen binding capacity and stability was insignificant and weak. The thermal stability of antibodies correlated with acid and alkali resistance, with clones exhibiting lower thermal stability demonstrating higher acid and alkali resistance in antigen-antibody complexes. The results indicate that in the antibody selection process, the strength of antigen binding involves optimizing stability, with antibodies with more flexible structures being selected.
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