Evidence map›Paper›PMID 22318728›Full record

ArticleThe Journal of biological chemistry2012

Remarkable transglycosylation activity of glycosynthase mutants of endo-D, an endo-β-N-acetylglucosaminidase from Streptococcus pneumoniae.

Shu-Quan Fan, Wei Huang, Lai-Xi Wang

Erratum issuedOpen access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

42 citing papers in PubMed, 78 citations in OpenAlex.

  1. Glycan Remodeling Technologies for Enhancing Antibody Function.Advances in experimental medicine and biology · 2026
    Review
  2. Glycan Remodeling Technologies for Enhancing Antibody Function.Advances in experimental medicine and biology · 2026
    Review
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Proteomic response inJournal of oral microbiology · 2021
    Article
  9. Review
  10. Article
  11. Review
  12. Review
  13. Review
  14. Structural basis for the specific cleavage of core-fucosylatedThe Journal of biological chemistry · 2019
    Article
  15. Review
  16. Review
  17. Article
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  20. Review
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Shu-Quan FanInstitute of Human Virology, Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA.
Wei Huang
Lai-Xi Wang
University of Maryland, Baltimore · US

Funding

Covergent Chemoenzymatic Synthesis of Glycopeptides and GlycoproteinsR01GM080374 · NIGMS · UNIV OF MARYLAND, COLLEGE PARK · PI WANG, LAI-XI · 2007 to 2021
$3.9M
NIGMS NIH HHS GM080374NIGMS NIH HHS GM080374-S1NIGMS NIH HHS R01 GM080374
6 · The paper itself

Abstract

Endo-β-N-acetylglucosaminidase from Streptococcus pneumoniae (Endo-D) is an endoglycosidase capable of hydrolyzing the Fc N-glycan of intact IgG antibodies after sequential removal of the sialic acid, galactose, and internal GlcNAc residues in the N-glycan. Endo-D also possesses transglycosylation activity with sugar oxazoline as the donor substrate, but the transglycosylation yield is low due to enzymatic hydrolysis of the donor substrate and the product. We report here our study on the hydrolytic and transglycosylation activity of recombinant Endo-D and its selected mutants. We found that Endo-D preferred core-fucosylated N-glycan for hydrolysis but favored nonfucosylated GlcNAc acceptor for transglycosylation. Several mutants showed significantly enhanced transglycosylation efficiency over the wild type enzyme. Two mutants (N322Q and N322A) were identified as typical glycosynthases that demonstrated remarkable transglycosylation activity with only marginal or no product hydrolysis activity. Kinetic studies revealed that the N322Q [corrected]and N322A glycosynthases had much higher catalytic efficiency for glycosylating the nonfucosylated GlcNAc acceptor. In comparison, the N322Q was much more efficient than N322A for transglycosylation. However, N322Q and N322A [corrected] could not take more complex N-glycan oxazoline as substrate for transglycosylation, indicating their strict substrate specificity. The usefulness of the N322Q glycosynthase was exemplified by its application for efficient glycosylation remodeling of IgG-Fc domain.

Indexed as

Amino Acid SequenceCloning, MolecularFucoseGlycosylationHydrolysisImmunoglobulin GKineticsLigasesMannosyl-Glycoprotein Endo-beta-N-AcetylglucosaminidaseMolecular Sequence DataMutant ProteinsProtein EngineeringStreptococcus pneumoniaeFucoseImmunoglobulin GLigasesMannosyl-Glycoprotein Endo-beta-N-AcetylglucosaminidaseMutant Proteins

Identifiers

PMID22318728
PMCPMC3322811
OpenAlexW1997937515

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.