Evidence map›Paper›PMID 9841928›Full record

ArticleThe Journal of experimental medicine1998

The complete nucleotide sequence of the human immunoglobulin heavy chain variable region locus.

F Matsuda, K Ishii, P Bourvagnet, K i Kuma, H Hayashida, T Miyata, T Honjo

Abstract read
In one paragraph

Article in The Journal of experimental medicine, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 144 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
144citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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

144 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
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  18. Adaptive immune receptor genotyping using theFrontiers in immunology · 2023
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84 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

F MatsudaDepartment of Medical Chemistry, Kyoto University Graduate School of Medicine, Kyoto 60601, Japan.
K Ishii
P Bourvagnet
K i Kuma
H Hayashida
T Miyata
T Honjo

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The complete nucleotide sequence of the 957-kb DNA of the human immunoglobulin heavy chain variable (VH) region locus was determined and 43 novel VH segments were identified. The region contains 123 VH segments classifiable into seven different families, of which 79 are pseudogenes. Of the 44 VH segments with an open reading frame, 39 are expressed as heavy chain proteins and 1 as mRNA, while the remaining 4 are not found in immunoglobulin cDNAs. Combinatorial diversity of VH region was calculated to be approximately 6,000. Conservation of the promoter and recombination signal sequences was observed to be higher in functional VH segments than in pseudogenes. Phylogenetic analysis of 114 VH segments clearly showed clustering of the VH segments of each family. However, an independent branch in the tree contained a single VH, V4-44.1P, sharing similar levels of homology to human VH families and to those of other vertebrates. Comparison between different copies of homologous units that appear repeatedly across the locus clearly demonstrates that dynamic DNA reorganization of the locus took place at least eight times between 133 and 10 million years ago. One nonimmunoglobulin gene of unknown function was identified in the intergenic region.

Indexed as

Genes, ImmunoglobulinGenome, HumanChromosomes, Artificial, YeastHumansImmunoglobulin Heavy ChainsImmunoglobulin Variable RegionPhylogenySequence Analysis, DNAImmunoglobulin Heavy ChainsImmunoglobulin Variable Region

Identifiers

PMID9841928
PMCPMC2212390

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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.