Evidence map›Paper›PMID 34556581›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

D-cysteine is an endogenous regulator of neural progenitor cell dynamics in the mammalian brain.

Evan R Semenza, Maged M Harraz, Efrat Abramson, Adarsha P Malla, Chirag Vasavda, Moataz M Gadalla, Michael D Kornberg, Solomon H Snyder, Robin Roychaudhuri

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
7.0field-weighted citation impact, top 2% 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

36 citing papers in PubMed, 72 citations in OpenAlex.

  1. Clonal Stabilization Reveals a DAO/3MST-Expressing MDCK Subpopulation With Robust d-Cysteine-Mediated HFASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  2. Article
  3. Chemogenetic Manipulation of HPrecision chemistry · 2026
    Article
  4. Review
  5. Hydrogen sulfide/polysulfides signaling and neuronal diseases.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  6. Review
  7. Review
  8. Article
  9. Mammalian Tolerance to Amino Acid Heterochirality.Chembiochem : a European journal of chemical biology · 2025
    Review
  10. Advances in Chiral Metabolomic Profiling and Biomarker Discovery.Methods in molecular biology (Clifton, N.J.) · 2025
    Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Hydrogen Sulfide (HBiomolecules · 2024
    Review
  18. Article
  19. Article
  20. 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

9 authors at 1 institution in 1 country.

Evan R SemenzaThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Maged M HarrazThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Efrat AbramsonDepartment of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Adarsha P MallaThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Chirag VasavdaThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.ORCID 0000-0003-4558-4698
Moataz M GadallaThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205.
Michael D KornbergDepartment of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205.ORCID 0000-0003-2588-7325
Solomon H SnyderThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205; ssnyder@jhmi.edu rroycha1@jhmi.edu.ORCID 0000-0002-6818-7022
Robin RoychaudhuriThe Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205; ssnyder@jhmi.edu rroycha1@jhmi.edu.
Johns Hopkins University · US

Funding

Medical Scientist Training ProgramT32GM136577 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI ANDREA L COX · 2020 to 2026
$13.4M
NEUROCHEMICAL ACTIONS OF PSYCHOTROPIC DRUGSR01MH018501 · NIMH · JOHNS HOPKINS UNIVERSITY · PI SNYDER, SOLOMON H. · 1985 to 2019
$10.8M
NIGMS NIH HHS T32 GM136577NIMH NIH HHS R01 MH018501
6 · The paper itself

Abstract

d-amino acids are increasingly recognized as important signaling molecules in the mammalian central nervous system. However, the d-stereoisomer of the amino acid with the fastest spontaneous racemization ratein vitro in vitro, cysteine, has not been examined in mammals. Using chiral high-performance liquid chromatography and a stereospecific luciferase assay, we identify endogenous d-cysteine in the mammalian brain. We identify serine racemase (SR), which generates the

Indexed as

AnimalsAnimals, NewbornBrainMiceMice, Inbred C57BLMice, KnockoutNeural Stem CellsRacemases and EpimerasesReceptors, N-Methyl-D-AspartateSerineSerine RacemaseRacemases and EpimerasesReceptors, N-Methyl-D-AspartateSerineSerine Racemasecortical developmentD-cysteineFoxOneural progenitor cellserine racemase

Identifiers

PMID34556581
PMCPMC8488618
OpenAlexW3201090175

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.