Evidence map›Paper›PMID 8460148›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America1993

Passenger transgenes reveal intrinsic specificity of the antibody hypermutation mechanism: clustering, polarity, and specific hot spots.

A G Betz, C Rada, R Pannell, C Milstein, M S Neuberger

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 1993. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.

0numbers the graph read from it
0cells of the map it votes in
79citing papers in PubMed
14.7field-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

79 citing papers in PubMed, 274 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Position-Dependent Differential Targeting of Somatic Hypermutation.Journal of immunology (Baltimore, Md. : 1950) · 2020
    Article
  5. Article
  6. Review
  7. Article
  8. Repertoire-wide phylogenetic models of B cell molecular evolution reveal evolutionary signatures of aging and vaccination.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  9. Review
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Review
  17. Review
  18. Article
  19. Review
  20. Article

19 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

5 authors at 2 institutions in 1 country.

A G BetzMedical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom.
C Rada
R Pannell
C Milstein
M S Neuberger
MRC Laboratory of Molecular Biology · GBMedical Research Council · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have analyzed somatic hypermutation in mice carrying an immunoglobulin kappa transgene in order to discriminate mutations that reflect the intrinsic specificity of the hypermutation mechanism from those highlighted by antigenic selection. We have immunized animals with three different immunogens. With one immunogen, the antigen-specific B cells express a transgenic kappa chain, which does not form part of the antibody; the transgene is a passenger free to accumulate unselected mutations. With the other two immunogens, the transgenic kappa chain constitutes the light chain of the expressed antibody. A comparison of the transgene mutations obtained under these different circumstances allows us to identify common features that we attribute to the intrinsic specificity of the hypermutation process. In particular, it yields only base substitutions and leads to hot spots occurring in individual positions (e.g., the second base of the Ser-31 codon). The mutations preferentially accumulate around the first complementarity-determining region. The process exhibits specific base substitution preferences with transitions being favored over transversions. We propose that these substitution preferences can be used to discriminate intrinsic from antigen-selected hot spots. We also note that hypermutation distinguishes between the coding and noncoding strands since pyrimidines (particularly thymidines) mutate less frequently than purines.

Indexed as

Genes, ImmunoglobulinMutationAmino Acid SequenceAnimalsBase SequenceBordetella pertussisDNAEnzyme-Linked Immunosorbent AssayImmunoglobulin kappa-ChainsImmunoglobulin Variable RegionMiceMice, TransgenicMolecular Sequence DataOligodeoxyribonucleotidesPhycoerythrinPolymerase Chain ReactionDNAImmunoglobulin kappa-ChainsImmunoglobulin Variable RegionOligodeoxyribonucleotidesPhycoerythrinVaccines, InactivatedViral Vaccines

Identifiers

PMID8460148
PMCPMC46091
OpenAlexW2091974060

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.