Evidence map›Paper›PMID 17222385›Full record

ArticleArchives of biochemistry and biophysics2007

CYP2E1 active site residues in substrate recognition sequence 5 identified by photoaffinity labeling and homology modeling.

Samuel L Collom, Arvind P Jamakhandi, Alan J Tackett, Anna Radominska-Pandya, Grover P Miller

Open access · greenAbstract read
In one paragraph

Article in Archives of biochemistry and biophysics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
3.0field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 25 citations in OpenAlex.

  1. Article
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  5. Cooperative effects for CYP2E1 differ between styrene and its metabolites.Xenobiotica; the fate of foreign compounds in biological systems · 2013
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  13. Serum biomarker profile associated with high bone turnover and BMD in postmenopausal women.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2008
    Article
  14. Article
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  17. Murburn Concept: A Molecular Explanation for Hormetic and Idiosyncratic Dose Responses.Dose-response : a publication of International Hormesis Society
    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

5 authors at 1 institution in 1 country.

Samuel L CollomDepartment of Biochemistry and Molecular Biology, University of Arkansas for Medical Sciences, 4301 W. Markham St. Slot 516, Little Rock, AR 72205, USA.
Arvind P Jamakhandi
Alan J Tackett
Anna Radominska-Pandya
Grover P Miller
University of Arkansas for Medical Sciences · US

Funding

VIRULENCE MECHANISMS IN ESCHERICHIA COLIP20RR016460 · NCRR · UNIV OF ARKANSAS FOR MED SCIS · PI HENSLEY, LORI · 2001 to 2011
$33.1M
Structure based drug discoveryP20RR015569 · NCRR · UNIVERSITY OF ARKANSAS AT FAYETTEVILLE · PI MILLETT, FRANCIS S · 2000 to 2009
$21.4M
NCRR NIH HHS 1 P20 RR015569-06NCRR NIH HHS P20 RR015569NCRR NIH HHS P20 RR016460NCRR NIH HHS P20RR016460
6 · The paper itself

Abstract

Despite its biological importance, our knowledge of active site structure and relevance of critical amino acids in CYP2E1 catalytic processes remain limited. In this study, we identified CYP2E1 active site residues using photoaffinity labeling with 7-azido-4-methylcoumarin (AzMC) coupled with a CYP2E1 homology model. In the absence of light, AzMC was an effective competitor against substrate p-nitrophenol oxidation by CYP2E1. Photoactivation of AzMC led to a concentration-dependent loss in CYP2E1 activity and structural integrity resulting from the modification of both heme and protein. The photo-labeling reaction degraded heme and produced a possible heme adduct. Probe incorporation into the protein occurred at multiple sites within substrate recognition sequence 5 (SRS-5). Based on a CYP2E1 homology model, we hypothesize AzMC labels SRS-5 residues, Leu363, Val364, and Leu368, in the active site. In addition, we propose a series of phenylalanines, especially Phe106, mediate contacts with the coumarin.

Indexed as

Models, ChemicalModels, MolecularAmino AcidsAmino Acid SequenceBinding SitesComputer SimulationCytochrome P-450 CYP2E1Enzyme ActivationMolecular Sequence DataPhotoaffinity LabelsProtein BindingProtein Structure, TertiarySequence Analysis, ProteinSequence Homology, Amino AcidAmino AcidsCytochrome P-450 CYP2E1Photoaffinity Labels

Identifiers

PMID17222385
PMCPMC1994253
OpenAlexW2044145932

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.