Evidence map›Paper›PMID 28103677›Full record

ArticleACS chemical biology2017

Inversion of Extender Unit Selectivity in the Erythromycin Polyketide Synthase by Acyltransferase Domain Engineering.

Irina Koryakina, Christian Kasey, John B McArthur, Andrew N Lowell, Joseph A Chemler, Shasha Li, Douglas A Hansen, David H Sherman, Gavin J Williams

Open access · greenAbstract read
In one paragraph

Article in ACS chemical biology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
10.1field-weighted citation impact, top 2% 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

26 citing papers in PubMed, 68 citations in OpenAlex.

  1. Article
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  3. Current State-of-the-Art Toward Chemoenzymatic Synthesis of Polyketide Natural Products.Chembiochem : a European journal of chemical biology · 2023
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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

9 authors at 3 institutions in 1 country.

Irina KoryakinaDepartment of Chemistry, NC State University , Raleigh, North Carolina 27695-8204, United States.
Christian KaseyDepartment of Chemistry, NC State University , Raleigh, North Carolina 27695-8204, United States.
John B McArthur
Andrew N LowellLife Sciences Institute, Department of Medicinal Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States.
Joseph A ChemlerLife Sciences Institute, Department of Medicinal Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States.
Shasha LiLife Sciences Institute, Department of Medicinal Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States.
Douglas A HansenLife Sciences Institute, Department of Medicinal Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States.ORCID 0000-0003-4681-650X
David H ShermanLife Sciences Institute, Department of Medicinal Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States.
Gavin J WilliamsDepartment of Chemistry, NC State University , Raleigh, North Carolina 27695-8204, United States.ORCID 0000-0003-2172-9063
University of Michigan · USNorth Carolina State University · USUniversity of California, Davis · US

Funding

Molecular Analysis of Modular Polyketide SynthasesR01GM076477 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SHERMAN, DAVID H, SMITH, JANET L. · 2006 to 2018
$5.2M
Discovery and Characterization of Natural Product Systems-Research Supplement to Promote DiversityR35GM118101 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI SHERMAN, DAVID H · 2016 to 2025
$3.3M
Synthetic Biology Approach to Regioselectively Modified PolyketidesR01GM104258 · NIGMS · NORTH CAROLINA STATE UNIVERSITY RALEIGH · PI WILLIAMS, GAVIN J · 2013 to 2017
$1.4M
NIGMS NIH HHS R01 GM076477NIGMS NIH HHS R01 GM104258NIGMS NIH HHS R35 GM118101
6 · The paper itself

Abstract

Acyltransferase (AT) domains of polyketide synthases (PKSs) select extender units for incorporation into polyketides and dictate large portions of the structures of clinically relevant natural products. Accordingly, there is significant interest in engineering the substrate specificity of PKS ATs in order to site-selectively manipulate polyketide structure. However, previous attempts to engineer ATs have yielded mutant PKSs with relaxed extender unit specificity, rather than an inversion of selectivity from one substrate to another. Here, by directly screening the extender unit selectivity of mutants from active site saturation libraries of an AT from the prototypical PKS, 6-deoxyerythronolide B synthase, a set of single amino acid substitutions was discovered that dramatically impact the selectivity of the PKS with only modest reductions of product yields. One particular substitution (Tyr189Arg) inverted the selectivity of the wild-type PKS from its natural substrate toward a non-natural alkynyl-modified extender unit while maintaining more than twice the activity of the wild-type PKS with its natural substrate. The strategy and mutations described herein form a platform for combinatorial biosynthesis of site-selectively modified polyketide analogues that are modified with non-natural and non-native chemical functionality.

Indexed as

Mutagenesis, Site-DirectedAcyltransferasesErythromycinMacrolidesPoint MutationPolyketidesPolyketide SynthasesProtein DomainsSaccharopolysporaSubstrate Specificity10-deoxymethynolideAcyltransferasesErythromycinMacrolidesPolyketidesPolyketide Synthases

Identifiers

PMID28103677
PMCPMC5347258
OpenAlexW2558653785

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.