Evidence map›Paper›PMID 31974307›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Structural instability and divergence from conserved residues underlie intracellular retention of mammalian odorant receptors.

Kentaro Ikegami, Claire A de March, Maira H Nagai, Soumadwip Ghosh, Matthew Do, Ruchira Sharma, Elise S Bruguera, Yueyang Eric Lu, Yosuke Fukutani, Nagarajan Vaidehi and 2 more

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
2.2field-weighted citation impact, top 9% 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

39 citing papers in PubMed, 61 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Identifying Key Regulators in Odorant Receptor Trafficking.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  6. Article
  7. Surface delivery quantification reveals distinct trafficking efficiencies among clustered protocadherin isoforms.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Article
  9. Antagonists Enhance Cell-Surface Expression of Mammalian Odorant Receptors.International journal of molecular sciences · 2025
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review
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

12 authors at 3 institutions in 3 countries.

Kentaro IkegamiDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.
Claire A de MarchDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.ORCID 0000-0001-6461-5547
Maira H NagaiDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.
Soumadwip GhoshDepartment of Computational and Quantitative Medicine, Beckman Research Institute of the City of Hope, Duarte, CA 91010.
Matthew DoDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.
Ruchira SharmaDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.
Elise S BrugueraDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.
Yueyang Eric LuDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.
Yosuke FukutaniDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710.ORCID 0000-0002-3716-8590
Nagarajan VaidehiDepartment of Computational and Quantitative Medicine, Beckman Research Institute of the City of Hope, Duarte, CA 91010.
Masafumi YohdaDepartment of Biotechnology and Life Science, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan.
Hiroaki MatsunamiDepartment of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC 27710; hiroaki.matsunami@duke.edu.
Duke University · USCity of Hope · USTokyo University of Agriculture and Technology · JP

Funding

Structural dynamics underlying GPCR-G protein selectivityR01GM117923 · NIGMS · BECKMAN RESEARCH INSTITUTE/CITY OF HOPE · PI VAIDEHI, NAGARAJAN · 2017 to 2024
$3.8M
Peripheral Odor Coding in MammalsR01DC014423 · NIDCD · DUKE UNIVERSITY · PI MATSUNAMI, HIROAKI · 2015 to 2019
$2.3M
Computationally Guided Design of Thermostable mutants of Neurotensin receptor1R01GM097261 · NIGMS · BECKMAN RESEARCH INSTITUTE/CITY OF HOPE · PI VAIDEHI, NAGARAJAN · 2011 to 2018
$2.3M
Biogenesis of olfactory G protein-coupled receptorsR01DC016224 · NIDCD · DUKE UNIVERSITY · PI MATSUNAMI, HIROAKI · 2017 to 2021
$2.2M
An integrated toolkit combining computational systems biology techniques with molecular dynamics simulations to delineate functionality of GPCRsR01LM013876 · NLM · BECKMAN RESEARCH INSTITUTE/CITY OF HOPE · PI RODIN, ANDREI, VAIDEHI, NAGARAJAN · 2022 to 2025
$1.5M
Understanding of G protein-coupled odorant receptors functionK99DC018333 · NIDCD · DUKE UNIVERSITY · PI DE MARCH, CLAIRE A. · 2020 to 2021
$172k
NIDCD NIH HHS K99 DC018333NIDCD NIH HHS R01 DC014423NIDCD NIH HHS R01 DC016224NIGMS NIH HHS R01 GM097261NIGMS NIH HHS R01 GM117923NLM NIH HHS R01 LM013876
6 · The paper itself

Abstract

Mammalian odorant receptors are a diverse and rapidly evolving set of G protein-coupled receptors expressed in olfactory cilia membranes. Most odorant receptors show little to no cell surface expression in nonolfactory cells due to endoplasmic reticulum retention, which has slowed down biochemical studies. Here we provide evidence that structural instability and divergence from conserved residues of individual odorant receptors underlie intracellular retention using a combination of large-scale screening of odorant receptors cell surface expression in heterologous cells, point mutations, structural modeling, and machine learning techniques. We demonstrate the importance of conserved residues by synthesizing consensus odorant receptors that show high levels of cell surface expression similar to conventional G protein-coupled receptors. Furthermore, we associate in silico structural instability with poor cell surface expression using molecular dynamics simulations. We propose an enhanced evolutionary capacitance of olfactory sensory neurons that enable the functional expression of odorant receptors with cryptic mutations.

Indexed as

AnimalsCell LineHumansMiceMolecular Dynamics SimulationOlfactory Receptor NeuronsProtein StabilityReceptors, OdorantReceptors, OdorantGPCRolfactionprotein trafficking

Identifiers

PMID31974307
PMCPMC7022149
OpenAlexW3002869006

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.