Evidence map›Paper›PMID 21983600›Full record

ArticleNature chemical biology2011

The proteoglycan bikunin has a defined sequence.

Mellisa Ly, Franklin E Leach, Tatiana N Laremore, Toshihiko Toida, I Jonathan Amster, Robert J Linhardt

Abstract read
In one paragraph

Article in Nature chemical biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 109 papers.

0numbers the graph read from it
0cells of the map it votes in
109citing papers in PubMed
5.6field-weighted citation impact, top 3% 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

109 citing papers in PubMed, 183 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Trial
  4. Glycan Sequencing, A Brief Primer.Glycoscience & therapy · 2026
    Article
  5. Article
  6. Article
  7. Article
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  11. Article
  12. Article
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  14. Review
  15. Article
  16. Article
  17. Isolation and Compositional Analysis of Glycosaminoglycans.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  18. Article
  19. Review
  20. Article

49 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 2 countries.

Mellisa LyDepartment of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York, USA.
Franklin E Leach
Tatiana N Laremore
Toshihiko Toida
I Jonathan Amster
Robert J Linhardt
Rensselaer Polytechnic Institute · USUniversity of Georgia · USChiba University · JP

Funding

SEQUENCING THE POLYSACCHARIDE COMPONENT OF PROTEOGLYCANSR01GM038060 · NIGMS · UNIVERSITY OF IOWA · PI LINHARDT, ROBERT J · 1988 to 2012
$2.8M
NIGMS NIH HHS GM38060NIGMS NIH HHS R01 GM038060
6 · The paper itself

Abstract

Proteoglycans are complex glycoconjugates that regulate critical biological pathways in all higher organisms. Bikunin, the simplest proteoglycan, with a single glycosaminoglycan chain, is a serine protease inhibitor used to treat acute pancreatitis. Unlike nucleic acids and proteins, whose synthesis is template driven, Golgi-synthesized glycosaminoglycans are not believed to have predictable or deterministic sequences. Bikunin peptidoglycosaminoglycans were prepared and fractionated to obtain a collection of size-similar and charge-similar chains. Fourier transform mass spectral analysis identified a small number of parent molecular ions corresponding to monocompositional peptidoglycosaminoglycans. Fragmentation using collision-induced dissociation unexpectedly afforded a single sequence for each monocompositional parent ion, unequivocally demonstrating the presence of a defined sequence. The biosynthetic pathway common to all proteoglycans suggests that even more structurally complex proteoglycans, such as heparan sulfate, may have defined sequences, requiring a readjustment in the understanding of information storage in complex glycans.

Indexed as

Alpha-GlobulinsCarbohydrate ConformationCarbohydrate SequenceFourier AnalysisGlycosaminoglycansMass SpectrometryProteoglycansalpha-1-microglobulinAlpha-GlobulinsGlycosaminoglycansProteoglycans

Identifiers

PMID21983600
PMCPMC3197799
OpenAlexW2102802508

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.