Evidence map›Paper›PMID 19367403›Full record

ArticleApplied microbiology and biotechnology2009

The evolution of cyclodextrin glucanotransferase product specificity.

Ronan M Kelly, Lubbert Dijkhuizen, Hans Leemhuis

Abstract read
In one paragraph

Article in Applied microbiology and biotechnology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
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

21 citing papers in PubMed.

  1. An Archaeal Cyclodextrin Glycosyltransferase fromInternational journal of molecular sciences · 2026
    Article
  2. Review
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  6. Effect of LeuApplied and environmental microbiology · 2021
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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

3 authors.

Ronan M KellyMicrobial Physiology, Groningen Biomolecular Sciences and Biotechnology Institute, Centre for Carbohydrate Bioprocessing, University of Groningen, Kerklaan 30, 9751 NN Haren, the Netherlands.
Lubbert Dijkhuizen
Hans Leemhuis

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cyclodextrin glucanotransferases (CGTases) have attracted major interest from industry due to their unique capacity of forming large quantities of cyclic alpha-(1,4)-linked oligosaccharides (cyclodextrins) from starch. CGTases produce a mixture of cyclodextrins from starch consisting of 6 (alpha), 7 (beta) and 8 (gamma) glucose units. In an effort to identify the structural factors contributing to the evolutionary diversification of product specificity amongst this group of enzymes, we selected nine CGTases from both mesophilic, thermophilic and hyperthermophilic organisms for comparative product analysis. These enzymes displayed considerable variation regarding thermostability, initial rates, percentage of substrate conversion and ratio of alpha-, beta- and gamma-cyclodextrins formed from starch. Sequence comparison of these CGTases revealed that specific incorporation and/or substitution of amino acids at the substrate binding sites, during the evolutionary progression of these enzymes, resulted in diversification of cyclodextrin product specificity.

Indexed as

Evolution, MolecularAmino Acid SequenceBacteriaBacterial ProteinsBinding SitesCyclodextrinsEnzyme StabilityGlucosyltransferasesKineticsMolecular Sequence DataPhylogenySequence Homology, Amino AcidStarchSubstrate SpecificityBacterial ProteinsCyclodextrinscyclomaltodextrin glucanotransferaseGlucosyltransferasesStarch

Identifiers

PMID19367403
PMCPMC2714454

What OpenQuestion holds

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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.