Evidence map›Paper›PMID 40960396›Full record

ArticleProtein science : a publication of the Protein Society2025

A third type of PETase from the marine Halopseudomonas lineage.

Onur Turak, Andreas Gagsteiger, Ashank Upadhyay, Mark Kriegel, Peter Salein, Stefanie Böhnke-Brandt, Seema Agarwal, Erik Borchert, Birte Höcker

Abstract read
In one paragraph

Article in Protein science : a publication of the Protein Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Biodegradation of components from an oxidized polyethylene by aApplied and environmental microbiology · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Protein engineering: status report.Protein engineering, design & selection : PEDS · 2026
    Review
  7. Article
  8. A third type of PETase from the marine Halopseudomonas lineage.Protein science : a publication of the Protein Society · 2025
    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

9 authors.

Onur TurakDepartment of Biochemistry, University of Bayreuth, Bayreuth, Germany.
Andreas GagsteigerDepartment of Biochemistry, University of Bayreuth, Bayreuth, Germany.
Ashank UpadhyayAdvanced Sustainable Polymers, Macromolecular Chemistry II, University of Bayreuth, Bayreuth, Germany.
Mark KriegelDepartment of Biochemistry, University of Bayreuth, Bayreuth, Germany.
Peter SaleinDepartment of Biochemistry, University of Bayreuth, Bayreuth, Germany.
Stefanie Böhnke-BrandtRD3 Marine Symbioses, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany.
Seema AgarwalAdvanced Sustainable Polymers, Macromolecular Chemistry II, University of Bayreuth, Bayreuth, Germany.
Erik BorchertRD3 Marine Symbioses, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany.
Birte HöckerDepartment of Biochemistry, University of Bayreuth, Bayreuth, Germany.ORCID 0000-0002-8250-9462

Funding

Deutsche Forschungsgemeinschaft 391977956
6 · The paper itself

Abstract

The enzymatic degradation of polyethylene terephthalate (PET) offers a sustainable solution for PET recycling. Over the past two decades, more than 100 PETases have been characterized, primarily exhibiting similar sequences and structures. Here, we report PET-degrading α/β hydrolases, including HaloPETase1 from the marine Halopseudomonas lineage, thereby extending the narrow sequence space by novel features at the active site. The crystal structure of HaloPETase1 was determined to a resolution of 1.16 Å, revealing a unique active site architecture and a lack of the canonical π-stacking clamp found in PETases so far. Further, variations in active site composition and loop structures were observed. Additionally, we found five more enzymes from the same lineage, two of which have a high similarity to type IIa bacterial PETases, while the other three resemble HaloPETase1. All these enzymes exhibited high salt tolerance ranging from 2.5 to 5 M NaCl, leading to higher total product releases upon PET degradation at 40 or 50°C. Based on these findings, we propose an extension of the existing PETase classification system to include type III PETases.

Indexed as

Bacterial ProteinsHydrolasesPolyethylene TerephthalatesCatalytic DomainCrystallography, X-RayModels, MolecularBacterial ProteinsHydrolasesPolyethylene TerephthalatesclassificationHalopseudomonashydrolasesPETasePET degradationpolyethylenestructure–function relationshipterephthalate

Identifiers

PMID40960396
PMCPMC12442448

What OpenQuestion holds

Textmetadata
LicenceCC BY
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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.