Evidence map›Paper›PMID 22927418›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Structural basis for entropy-driven cellulose binding by a type-A cellulose-binding module (CBM) and bacterial expansin.

Nikolaos Georgelis, Neela H Yennawar, Daniel J Cosgrove

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 72 papers.

0numbers the graph read from it
0cells of the map it votes in
72citing papers in PubMed
17.7field-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

72 citing papers in PubMed, 190 citations in OpenAlex.

  1. O-Glycosylated expansinScience advances · 2026
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  16. Structure and growth of plant cell walls.Nature reviews. Molecular cell biology · 2024
    Review
  17. Article
  18. Article
  19. Genome-Wide Analysis of the Expansin Gene Family inInternational journal of molecular sciences · 2023
    Article
  20. Loosenin-Like Proteins fromApplied and environmental microbiology · 2023
    Article

12 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

3 authors at 1 institution in 1 country.

Nikolaos GeorgelisDepartment of Biology, Pennsylvania State University, University Park, PA 16802, USA.
Neela H Yennawar
Daniel J Cosgrove
Pennsylvania State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Components of modular cellulases, type-A cellulose-binding modules (CBMs) bind to crystalline cellulose and enhance enzyme effectiveness, but structural details of the interaction are uncertain. We analyzed cellulose binding by EXLX1, a bacterial expansin with ability to loosen plant cell walls and whose domain D2 has type-A CBM characteristics. EXLX1 strongly binds to crystalline cellulose via D2, whereas its affinity for soluble cellooligosaccharides is weak. Calorimetry indicated cellulose binding was largely entropically driven. We solved the crystal structures of EXLX1 complexed with cellulose-like oligosaccharides to find that EXLX1 binds the ligands through hydrophobic interactions of three linearly arranged aromatic residues in D2. The crystal structures revealed a unique form of ligand-mediated dimerization, with the oligosaccharide sandwiched between two D2 domains in opposite polarity. This report clarifies the molecular target of expansin and the specific molecular interactions of a type-A CBM with cellulose.

Indexed as

Models, MolecularBacillus subtilisBacterial ProteinsCalorimetryCellulasesCelluloseCrystallography, X-RayElectrophoresis, Polyacrylamide GelOligosaccharidesProtein BindingProtein Interaction Domains and MotifsProtein Structure, TertiaryThermodynamicsBacterial ProteinsCellulasesCelluloseOligosaccharides

Identifiers

PMID22927418
PMCPMC3443152
OpenAlexW2000171051

What OpenQuestion holds

Textmetadata
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.