Evidence map›Paper›PMID 29946033›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Catalytic iron-carbene intermediate revealed in a cytochrome

Russell D Lewis, Marc Garcia-Borràs, Matthew J Chalkley, Andrew R Buller, K N Houk, S B Jennifer Kan, Frances H Arnold

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
7.9field-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

38 citing papers in PubMed, 116 citations in OpenAlex.

  1. Protoporphyrin IX iron(II) revisited. overview ofthe Mössbauer spectroscopic parameters of low spin porphyrin iron(II) complexes Part II.Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry · 2026
    Article
  2. Expanding beyond the capability of nature.Nature chemical biology · 2025
    Article
  3. Article
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  5. Article
  6. Article
  7. Article
  8. Review
  9. MicroED Structure of a Protoglobin Reactive Carbene Intermediate.Journal of the American Chemical Society · 2023
    Article
  10. Article
  11. Article
  12. How to Stabilize Carbenes in Enzyme Active Sites without Metal Ions.Journal of the American Chemical Society · 2022
    Article
  13. Review
  14. Catalysis and Electron Transfer inChemical reviews · 2022
    Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Origin and Control of Chemoselectivity in CytochromeJournal of the American Chemical Society · 2021
    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

7 authors at 2 institutions in 1 country.

Russell D LewisDivision of Biology and Bioengineering, California Institute of Technology, Pasadena, CA 91125.ORCID 0000-0002-5776-7347
Marc Garcia-BorràsDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095.ORCID 0000-0001-9458-1114
Matthew J ChalkleyDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125.
Andrew R BullerDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125.
K N HoukDepartment of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095; houk@chem.ucla.edu sbjkan@caltech.edu frances@cheme.caltech.edu.
S B Jennifer KanDivision of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125 houk@chem.ucla.edu sbjkan@caltech.edu frances@cheme.caltech.edu.ORCID 0000-0001-6371-8042
Frances H ArnoldDivision of Biology and Bioengineering, California Institute of Technology, Pasadena, CA 91125; houk@chem.ucla.edu sbjkan@caltech.edu frances@cheme.caltech.edu.
California Institute of Technology · USUniversity of California, Los Angeles · US

Funding

PREDOCTORAL TRAINING IN BIOLOGY AND CHEMISTRYT32GM007616 · NIGMS · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI STERNBERG, PAUL WARREN · 1985 to 2019
$22.9M
NIGMS NIH HHS T32 GM007616
6 · The paper itself

Abstract

Recently, heme proteins have been discovered and engineered by directed evolution to catalyze chemical transformations that are biochemically unprecedented. Many of these nonnatural enzyme-catalyzed reactions are assumed to proceed through a catalytic iron porphyrin carbene (IPC) intermediate, although this intermediate has never been observed in a protein. Using crystallographic, spectroscopic, and computational methods, we have captured and studied a catalytic IPC intermediate in the active site of an enzyme derived from thermostable

Indexed as

Directed Molecular EvolutionBacterial ProteinsCrystallography, X-RayMethanePorphyrinsRhodothermusTransferasesBacterial ProteinscarbeneMethanePorphyrinsTransferasescarbenecarbene transferasehememetalloenzymereactive intermediate

Identifiers

PMID29946033
PMCPMC6048479
OpenAlexW2810761825

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.