Evidence map›Paper›PMID 7916950›Full record

ReviewImmunology today1994

The CDR1 sequences of a major proportion of human germline Ig VH genes are inherently susceptible to amino acid replacement.

B Chang, P Casali

Open access · greenAbstract readReview
In one paragraph

Review in Immunology today, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 131 papers.

0numbers the graph read from it
0cells of the map it votes in
131citing papers in PubMed
13.6field-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

131 citing papers in PubMed, 405 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Grade I, II and III Follicular Lymphomas Express Ig VPathology oncology research : POR · 2020
    Article
  9. Article
  10. Article
  11. Phenotypic and Ig Repertoire Analyses Indicate a Common Origin of IgDJournal of immunology (Baltimore, Md. : 1950) · 2019
    Article
  12. Review
  13. Origin of biomolecular games: deception and molecular evolution.Journal of the Royal Society, Interface · 2018
    Article
  14. Review
  15. Review
  16. Frontiers in immunology · 2018
    Article
  17. Article
  18. Article
  19. Article
  20. Article

71 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

2 authors at 1 institution in 1 country.

B ChangDept of Pathology, New York University School of Medicine, NY 10016.
P Casali
New York University · US

Funding

SHORT-TERM TRAINING: STUDENTS IN HEALTH PROFESSIONAL SCHT35DK007421 · NIDDK · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI RAMASAMY, RAVICHANDRAN · 1985 to 2023
$2.5M
SOMATIC HYPERMUTATION IN HUMAN B CELLSR01AR040908 · NIAMS · WEILL MEDICAL COLLEGE OF CORNELL UNIV · PI CASALI, PAOLO · 1992 to 2005
$1.8M
NCI NIH HHS CA-16804NIAMS NIH HHS AR-40809NIAMS NIH HHS R01 AR040908NIDDK NIH HHS 5T35 DK-07421NIDDK NIH HHS T35 DK007421
6 · The paper itself

Abstract

The variable (V) genes of antigen-selected antibodies are known to exhibit a higher frequency of amino acid replacement mutations in the sequences encoding the antigen-contacting complementarity-determining regions (CDRs) than in those encoding the 'structural' framework regions (FRs). Here, Bernard Chang and Paolo Casali analyse the impact of regional differences in the codon composition of human germline Ig VH and VL genes on regional differences in the frequency of replacement mutations in the gene products (i.e. the antigen-binding sites of antibody molecules). This analysis reveals that CDR and FR sequences can differ significantly in their inherent susceptibility to amino acid replacement given any single nucleotide change. Thus, the CDR sequences of all the Ig VH genes analysed comprise a higher frequency of codons susceptible to replacement mutations than would be expected for a random sequence. Conversely, the FR sequences comprise codons less susceptible to replacement mutations than expected. Random accumulation of nucleotide changes throughout the coding sequence of an Ig V-gene segment containing CDRs inherently more prone to replacement mutations than the respective FRs would inevitably yield a higher rate of amino acid replacements in the CDRs than in the FRs. This would provide a fertile structural substrate of hypervariability for antigen selection while still maintaining the structural integrity of the FRs.

Indexed as

MutationAmino AcidsAmino Acid SequenceBase SequenceGenes, ImmunoglobulinHumansImmunoglobulin Variable RegionMolecular Sequence DataAmino AcidsImmunoglobulin Variable Region

Identifiers

PMID7916950
PMCPMC4665105
OpenAlexW2005566446

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.