Evidence map›Paper›PMID 23204305›Full record

ArticleGenome biology and evolution2012

Birth-and-death of KLK3 and KLK2 in primates: evolution driven by reproductive biology.

Patrícia Isabel Marques, Rui Bernardino, Teresa Fernandes, NISC Comparative Sequencing Program, Eric D Green, Belen Hurle, Victor Quesada, Susana Seixas

Open access · goldAbstract readLetter
In one paragraph

Article in Genome biology and evolution, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
1.2field-weighted citation impact, top 20% 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

11 citing papers in PubMed, 17 citations in OpenAlex.

  1. Drug Discovery Strategies for Kallikrein-Related Peptidases.International journal of molecular sciences · 2025
    Review
  2. Article
  3. Article
  4. Article
  5. Comparative genomic analysis of eutherian kallikrein genes.Molecular genetics and metabolism reports · 2017
    Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
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

8 authors at 3 institutions in 3 countries.

Patrícia Isabel Marques
Rui Bernardino
Teresa Fernandes
NISC Comparative Sequencing Program
Eric D Green
Belen Hurle
Victor Quesada
Susana Seixas
National Institutes of Health · USUniversidad de Oviedo · ESUniversidade do Porto · PT

Funding

Inter- and Intra-Species Comparative SequencingZIBHG000196 · NHGRI · NATIONAL HUMAN GENOME RESEARCH INSTITUTE · PI THOMAS, JAMES · 2009 to 2025
$177.6M
6 · The paper itself

Abstract

The kallikrein (KLK) gene family comprises the largest uninterrupted locus of serine proteases in the human genome and represents a notable case for studying the evolutionary fate of duplicated genes. In primates, a recent duplication event gave rise to KLK2 and KLK3, both encoding essential proteins for the cascade of seminal plasma liquefaction. We reconstructed the evolutionary history of KLK2 and KLK3 by comparative analysis of the orthologous sequences from 22 primate species, calculated d(N)/d(S) ratios, and addressed the hypothesis of coevolution with their substrates, the semenogelins (SEMG1 and SEMG2). Our findings support the placement of the KLK2-KLK3 duplication in the Catarrhini ancestor and unveil the frequent loss of KLK2 throughout primate evolution by different genomic mechanisms, including unequal crossing-over, deletions, and pseudogenization. We provide evidences for an adaptive evolution of KLK3 toward an expanded enzymatic spectrum, with an effect on the hydrolysis of semen coagulum. Furthermore, we found associations between mating system, the number of SEMG repeat units, and the number of functional KLK2 and KLK3, suggesting complex evolutionary dynamics shaped by reproductive biology.

Indexed as

Evolution, MolecularAmino Acid SequenceAnimalsCatalytic DomainCrossing Over, GeneticGene DeletionGene DuplicationGenome, HumanHumansHydrolysisKallikreinsMolecular Sequence DataPhylogenyPrimatesPseudogenesReproductionKallikreinsSeminal Vesicle Secretory Proteins

Identifiers

PMID23204305
PMCPMC3542562
OpenAlexW2127482006

What OpenQuestion holds

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LicenceCC BY-NC
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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.