Evidence map›Paper›PMID 21595439›Full record

ArticleBiochemistry2011

Mechanistic studies of reactions of peroxodiiron(III) intermediates in T201 variants of toluene/o-xylene monooxygenase hydroxylase.

Woon Ju Song, Stephen J Lippard

Open access · greenAbstract read
In one paragraph

Article in Biochemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.0field-weighted citation impact, top 22% 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

7 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
  2. Structure and assembly of the diiron cofactor in the heme-oxygenase-like domain of theProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Tracking a defined route for O₂ migration in a dioxygen-activating diiron enzyme.Proceedings of the National Academy of Sciences of the United States of America · 2011
    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

2 authors at 1 institution in 1 country.

Woon Ju SongDepartment of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Stephen J Lippard
Massachusetts Institute of Technology · US

Funding

NONHEME IRON AND THE BIOLOGICAL OXIDATION OF METHANER01GM032134 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LIPPARD, STEPHEN J. · 1985 to 2013
$6.9M
LIGAND-BRIDGED POLYNUCLEAR METAL COMPLEXES &PROTEINSR37GM032134 · NIGMS · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI LIPPARD, STEPHEN J · 1988 to 1997
–
NIGMS NIH HHS GM032134NIGMS NIH HHS R01 GM032134
6 · The paper itself

Abstract

Site-directed mutagenesis studies of a strictly conserved T201 residue in the active site of toluene/o-xylene monooxygenase hydroxylase (ToMOH) revealed that a single mutation can facilitate kinetic isolation of two distinctive peroxodiiron(III) species, designated T201(peroxo) and ToMOH(peroxo), during dioxygen activation. Previously, we characterized both oxygenated intermediates by UV-vis and Mössbauer spectroscopy, proposed structures from DFT and QM/MM computational studies, and elucidated chemical steps involved in dioxygen activation through the kinetic studies of T201(peroxo) formation. In this study, we investigate the kinetics of T201(peroxo) decay to explore the reaction mechanism of the oxygenated intermediates following O(2) activation. The decay rates of T201(peroxo) were monitored in the absence and presence of external (phenol) or internal (tryptophan residue in an I100W variant) substrates under pre-steady-state conditions. Three possible reaction models for the formation and decay of T201(peroxo) were evaluated, and the results demonstrate that this species is on the pathway of arene oxidation and appears to be in equilibrium with ToMOH(peroxo).

Indexed as

Ferric CompoundsIronKineticsMutagenesis, Site-DirectedOxidation-ReductionOxygenasesPhenolTryptophanXylenes2-xyleneFerric CompoundsIronOxygenasesPhenoltoluene 2-xylene monooxygenaseTryptophanXylenes

Identifiers

PMID21595439
PMCPMC3116272
OpenAlexW2027560458

What OpenQuestion holds

Textmetadata
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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.