Evidence map›Paper›PMID 10688877›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2000

Quantitative analysis of the effect of the mutation frequency on the affinity maturation of single chain Fv antibodies.

P S Daugherty, G Chen, B L Iverson, G Georgiou

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 1 pooled it
14.1field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

71 citing papers in PubMed, 1 synthesis or guideline pooled it, 240 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Simultaneous Affinity Maturation and Liability Removal from Antibodies.Methods in molecular biology (Clifton, N.J.) · 2026
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  6. Review
  7. Article
  8. Review
  9. Article
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  11. Review
  12. Article
  13. Engineering enhanced thermostability into theCurrent research in structural biology · 2022
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  16. Expression, Purification, and Characterization of Anti-International journal of molecular sciences · 2020
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  17. Review
  18. Probing pathways of adaptation with continuous evolution.Current opinion in systems biology · 2019
    Article
  19. Article
  20. Article

11 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

P S DaughertyDepartment of Chemical Engineering, Institute for Cell and Molecular Biology, University of Texas, Austin, TX 78712, USA.
G Chen
B L Iverson
G Georgiou
The University of Texas at Austin · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Random mutagenesis and selection using phage or cell surface display provides an efficient method for affinity maturation of single chain Fv (scFv) antibodies, thereby improving function in various applications. To investigate the effects of mutation frequency on affinity maturation, error-prone PCR was used to generate libraries containing an average (m) of between 1.7 and 22.5 base substitutions per gene in a high affinity scFv antibody that binds to the cardiac glycoside digoxigenin. The scFv antibody libraries were displayed on Escherichia coli, and mutant populations were analyzed by flow cytometry. At low to moderate mutation frequencies with an average mutation rate of m </= 8, the fraction of clones exhibiting binding to a fluorescently labeled conjugate of digoxigenin decreased exponentially (r(2) = 0.99), but the most highly mutated library (m = 22.5) had significantly more active clones than expected relative to this trend. A library with a low error rate (m = 1.7), one with moderate error rate (m = 3.8), and the one with high error rate (m = 22.5) were screened for high affinity clones under conditions of identical stringency using fluorescence-activated cell sorting. After several rounds of enrichment, each of the three libraries yielded clones with improved affinity for the hapten. The moderate and high error rate libraries gave rise to clones exhibiting the greatest affinity improvement. Taken together, our results indicate that (i) functional clones occur at an unexpectedly high frequency in hypermutated libraries, (ii) gain-of-function mutants are well represented in such libraries, and (iii) the majority of the scFv mutations leading to higher affinity correspond to residues distant from the binding site.

Indexed as

Amino Acid SequenceAntibody AffinityCloning, MolecularGene LibraryImmunoglobulin FragmentsImmunoglobulin Variable RegionMolecular Sequence DataMutagenesisSequence AnalysisImmunoglobulin Fragmentsimmunoglobulin FvImmunoglobulin Variable Region

Identifiers

PMID10688877
PMCPMC15748
OpenAlexW2027905552

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.