Evidence map›Paper›PMID 20131801›Full record

ArticleBiochemistry2010

Structure of epi-isozizaene synthase from Streptomyces coelicolor A3(2), a platform for new terpenoid cyclization templates.

Julie A Aaron, Xin Lin, David E Cane, David W Christianson

Open access · greenAbstract read
In one paragraph

Article in Biochemistry, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed
4.9field-weighted citation impact, top 4% 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

73 citing papers in PubMed, 156 citations in OpenAlex.

  1. Article
  2. Designed Water Capture in Terpene Synthase Catalysis.Chembiochem : a European journal of chemical biology · 2026
    Article
  3. Article
  4. Crystal structure and catalytic mechanism of drimenol synthase, an unusual bifunctional terpene cyclase-phosphatase.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Single Point Mutation Abolishes Water Capture in Germacradien-4-ol Synthase.Chembiochem : a European journal of chemical biology · 2024
    Article
  10. Article
  11. Review
  12. Genomic Based Analysis of the Biocontrol SpeciesJournal of fungi (Basel, Switzerland) · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. How a 10-ACS catalysis · 2022
    Article
  18. Article
  19. Molecular Determinants of Carbocation Cyclisation in Bacterial Monoterpene Synthases.Chembiochem : a European journal of chemical biology · 2022
    Article
  20. Review

13 more citing papers are in PubMed but not listed here.

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

4 authors at 2 institutions in 1 country.

Julie A AaronRoy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
Xin Lin
David E Cane
David W Christianson
Brown University · USUniversity of Pennsylvania · US

Funding

Case Center for Synchrotron BiosciencesP30EB009998 · NIBIB · CASE WESTERN RESERVE UNIVERSITY · PI CHANCE, MARK R · 2009 to 2018
$8.4M
STRUCTURE/FUNCTION OF BIOSYNTHETIC ENZYMESR01GM056838 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI CHRISTIANSON, DAVID W · 1998 to 2025
$8.0M
STEREOCHEMICAL STUDIES OF ISOPRENOID BIOSYNTHESISR01GM030301 · NIGMS · BROWN UNIVERSITY · PI CANE, DAVID E · 1985 to 2015
$5.4M
STEROCHEMICAL STUDIES 0F ISOPRENOID BIOSYNTHESISR37GM030301 · NIGMS · BROWN UNIVERSITY · PI CANE, DAVID E · 1994 to 2003
$1.8M
NIBIB NIH HHS P30 EB009998NIGMS NIH HHS GM30301NIGMS NIH HHS GM56838NIGMS NIH HHS R01 GM030301NIGMS NIH HHS R01 GM056838NIGMS NIH HHS R37 GM030301
6 · The paper itself

Abstract

The X-ray crystal structure of recombinant epi-isozizaene synthase (EIZS), a sesquiterpene cyclase from Streptomyces coelicolor A3(2), has been determined at 1.60 A resolution. Specifically, the structure of wild-type EIZS is that of its closed conformation in complex with three Mg(2+) ions, inorganic pyrophosphate (PP(i)), and the benzyltriethylammonium cation (BTAC). Additionally, the structure of D99N EIZS has been determined in an open, ligand-free conformation at 1.90 A resolution. Comparison of these two structures provides the first view of conformational changes required for substrate binding and catalysis in a bacterial terpenoid cyclase. Moreover, the binding interactions of BTAC may mimic those of a carbocation intermediate in catalysis. Accordingly, the aromatic rings of F95, F96, and F198 appear to be well-oriented to stabilize carbocation intermediates in the cyclization cascade through cation-pi interactions. Mutagenesis of aromatic residues in the enzyme active site results in the production of alternative sesquiterpene product arrays due to altered modes of stabilization of carbocation intermediates as well as altered templates for the cyclization of farnesyl diphosphate. Accordingly, the 1.64 A resolution crystal structure of F198A EIZS in a complex with three Mg(2+) ions, PP(i), and BTAC reveals an alternative binding orientation of BTAC; alternative binding orientations of a carbocation intermediate could lead to the formation of alternative products. Finally, the crystal structure of wild-type EIZS in a complex with four Hg(2+) ions has been determined at 1.90 A resolution, showing that metal binding triggers a significant conformational change of helix G to cap the active site.

Indexed as

Bacterial ProteinsCarbon-Carbon LyasesCrystallography, X-RayMutagenesis, Site-DirectedProtein Structure, SecondaryRecombinant ProteinsStreptomyces coelicolorTerpenesBacterial ProteinsCarbon-Carbon LyasesRecombinant ProteinsTerpenes

Identifiers

PMID20131801
PMCPMC2840623
OpenAlexW2098750284

What OpenQuestion holds

Textmetadata
LicenceTDM
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.