Evidence map›Paper›PMID 23301871›Full record

ArticleJournal of the American Chemical Society2013

Multisite prenylation of 4-substituted tryptophans by dimethylallyltryptophan synthase.

Jeffrey D Rudolf, Hong Wang, C Dale Poulter

Erratum issuedOpen access · greenAbstract read
In one paragraph

Article in Journal of the American Chemical Society, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
13.3field-weighted citation impact, top 1% 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

15 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
  2. Regioselective Biocatalytic C4-Prenylation of Unprotected Tryptophan Derivatives.Chembiochem : a European journal of chemical biology · 2022
    Article
  3. Biosynthesis and trafficking of hemeCritical reviews in biochemistry and molecular biology · 2021
    Review
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  5. Article
  6. Article
  7. Review
  8. Article
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  15. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Jeffrey D RudolfDepartment of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States.
Hong Wang
C Dale Poulter
University of Utah · US

Funding

TERPENE CONDENSATION REACTIONSR01GM021328 · NIGMS · UNIVERSITY OF UTAH · PI POULTER, CHARLES DALE · 1985 to 2013
$3.6M
TERPENE CONDENSATION REACTIONSR37GM021328 · NIGMS · UNIVERSITY OF UTAH · PI POULTER, CHARLES DALE · 1995 to 2004
$2.3M
Terpene Condensation ReactionsR56GM021328 · NIGMS · UNIVERSITY OF UTAH · PI POULTER, CHARLES DALE · 2009 to 2009
$473k
NIGMS NIH HHS GM 21328NIGMS NIH HHS R01 GM021328NIGMS NIH HHS R37 GM021328NIGMS NIH HHS R56 GM021328
6 · The paper itself

Abstract

The aromatic prenyltransferase dimethylallyltryptophan synthase in Claviceps purpurea catalyzes the normal prenylation of tryptophan at C4 of the indole nucleus in the first committed step of ergot alkaloid biosynthesis. 4-Methyltryptophan is a competitive inhibitor of the enzyme that has been used in kinetic studies. Upon investigation of background activity during incubations of 4-methyltryptophan with dimethylallyl diphosphate, we found that the analogue was an alternate substrate, which gave four products. The structures of three of these compounds were established by (1)H NMR and 2D NMR studies and revealed that dimethylallyltryptophan synthase catalyzed both normal and reverse prenylation at C3 of the indole ring and normal prenylation of N1. Similarly, 4-methoxytryptophan was an alternate substrate, giving normal prenylation at C5 as the major product. 4-Aminotryptophan, another alternate substrate, gave normal prenylation at C5 and C7. The ability of dimethylallyltryptophan synthase to prenylate at five different sites on the indole nucleus, with normal and reverse prenylation at one of the sites, is consistent with a dissociative electrophilic alkylation of the indole ring, where orientation of the substrates within the active site and substituent electronic effects determine the position and type of prenylation. These results suggest a common mechanism for prenylation of tryptophan by all of the members of the structurally related dimethylallyltryptophan synthase family.

Indexed as

AlkaloidsAlkyl and Aryl TransferasesBiocatalysisClavicepsKineticsModels, MolecularMolecular StructureTryptophanAlkaloidsAlkyl and Aryl TransferasesTryptophantryptophan dimethylallyltransferase

Identifiers

PMID23301871
PMCPMC3593668
OpenAlexW2090800663

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.