Evidence map›Paper›PMID 22356576›Full record

ArticleJournal of the American Chemical Society2012

A single-site mutation (F429H) converts the enzyme CYP 2B4 into a heme oxygenase: a QM/MM study.

Dandamudi Usharani, Costantino Zazza, Wenzhen Lai, Mukesh Chourasia, Lucy Waskell, Sason Shaik

Abstract read
In one paragraph

Article in Journal of the American Chemical Society, 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
–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

11 citing papers in PubMed.

  1. Review
  2. Spectroscopic studies of the cytochrome P450 reaction mechanisms.Biochimica et biophysica acta. Proteins and proteomics · 2018
    Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
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  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

6 authors.

Dandamudi UsharaniInstitute of Chemistry and the Lise Meitner-Minerva Center for Computational Quantum Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel.
Costantino Zazza
Wenzhen Lai
Mukesh Chourasia
Lucy Waskell
Sason Shaik

Funding

Microsomal Cytochromes P450 and their Interactions with their Redox PartnersR01GM094209 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI WASKELL, LUCY A · 2011 to 2014
$1.5M
NIGMS NIH HHS R01 GM094209NIGMS NIH HHS R01-GM-094209
6 · The paper itself

Abstract

The intriguing deactivation of the cytochrome P450 (CYP) 2B4 enzyme induced by mutation of a single residue, Phe429 to His, is explored by quantum mechanical/molecular mechanical calculations of the O-OH bond activation of the (Fe(3+)OOH)(-) intermediate. It is found that the F429H mutant of CYP 2B4 undergoes homolytic instead of heterolytic O-OH bond cleavage. Thus, the mutant acquires the following characteristics of a heme oxygenase enzyme: (a) donation by His429 of an additional NH---S H-bond to the cysteine ligand combined with the presence of the substrate retards the heterolytic cleavage and gives rise to homolytic O-OH cleavage, and (b) the Thr302/water cluster orients nascent OH(•) and ensures efficient meso hydroxylation.

Indexed as

Quantum TheoryAryl Hydrocarbon HydroxylasesCytochrome P450 Family 2Heme Oxygenase (Decyclizing)MutagenesisMutant ProteinsMutationAryl Hydrocarbon Hydroxylasescytochrome P-450 CYP2B4 (rabbit)Cytochrome P450 Family 2Heme Oxygenase (Decyclizing)Mutant Proteins

Identifiers

PMID22356576
PMCPMC3326604

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Registered trials

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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.