Evidence map›Paper›PMID 17921247›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2007

A glycosyltransferase with a length-controlling activity as a mechanism to regulate the size of polysaccharides.

Andrés E Ciocchini, L Soledad Guidolin, Adriana C Casabuono, Alicia S Couto, Nora Iñón de Iannino, Rodolfo A Ugalde

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2007. 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
2.6field-weighted citation impact, top 13% 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

21 citing papers in PubMed, 57 citations in OpenAlex.

  1. Article
  2. Article
  3. New glycoside hydrolase families of β-1,2-glucanases.Protein science : a publication of the Protein Society · 2025
    Article
  4. Article
  5. Enzymes that catalyze cyclization of β-1,2-glucans.Applied microbiology and biotechnology · 2025
    Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Bacterial Molecular Signals in the Sinorhizobium fredii-Soybean Symbiosis.International journal of molecular sciences · 2016
    Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 3 institutions in 1 country.

Andrés E CiocchiniInstituto de Investigaciones Biotecnológicas, Universidad Nacional de General San Martín, 1650 Buenos Aires, Argentina.
L Soledad Guidolin
Adriana C Casabuono
Alicia S Couto
Nora Iñón de Iannino
Rodolfo A Ugalde
National University of General San Martín · ARConsejo Nacional de Investigaciones Científicas y Técnicas · ARFundación Ciencias Exactas y Naturales · AR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cyclic beta-1,2-glucans (CbetaG) are osmolyte homopolysaccharides with a cyclic beta-1,2-backbone of 17-25 glucose residues present in the periplasmic space of several bacteria. Initiation, elongation, and cyclization, the three distinctive reactions required for building the cyclic structure, are catalyzed by the same protein, the CbetaG synthase. The initiation activity catalyzes the transference of the first glucose from UDP-glucose to a yet-unidentified amino acid residue in the same protein. Elongation proceeds by the successive addition of glucose residues from UDP-glucose to the nonreducing end of the protein-linked beta-1,2-oligosaccharide intermediate. Finally, the protein-linked intermediate is cyclized, and the cyclic glucan is released from the protein. These reactions do not explain, however, the mechanism by which the number of glucose residues in the cyclic structure is controlled. We now report that control of the degree of polymerization (DP) is carried out by a beta-1,2-glucan phosphorylase present at the CbetaG synthase C-terminal domain. This last activity catalyzes the phosphorolysis of the beta-1,2-glucosidic bond at the nonreducing end of the linear protein-linked intermediate, releasing glucose 1-phosphate. The DP is thus regulated by this "length-controlling" phosphorylase activity. To our knowledge, this is the first description of a control of the DP of homopolysaccharides.

Indexed as

Amino Acid SequenceBacillusbeta-GlucansGlucosephosphatesGlycosyltransferasesMolecular Sequence DataPhosphorylasesPolysaccharidesbeta-Glucanscyclic beta(1-2)glucanglucose-1-phosphateGlucosephosphatesGlycosyltransferasesPhosphorylasesPolysaccharides

Identifiers

PMID17921247
PMCPMC2034269
OpenAlexW1987846613

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.