Evidence map›Paper›PMID 21910203›Full record

ArticleChembiochem : a European journal of chemical biology2011

A reversible protection strategy to improve Fmoc-SPPS of peptide thioesters by the N-Acylurea approach.

Santosh K Mahto, Cecil J Howard, John C Shimko, Jennifer J Ottesen

Erratum issuedAbstract read
In one paragraph

Article in Chembiochem : a European journal of chemical biology, 2011. 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 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.7field-weighted citation impact, top 16% 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

22 citing papers in PubMed, 68 citations in OpenAlex.

  1. Article
  2. Review on the o-Aminoaniline Moiety in Peptide and Protein Chemistry.Chembiochem : a European journal of chemical biology · 2025
    Review
  3. Safety-Catch Linkers for Solid-Phase Peptide Synthesis.Molecules (Basel, Switzerland) · 2024
    Review
  4. Article
  5. Article
  6. A versatileChemical science · 2022
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Histone core phosphorylation regulates DNA accessibility.The Journal of biological chemistry · 2015
    Article
  18. Article
  19. Synthesis of thioester peptides for the incorporation of thioamides into proteins by native chemical ligation.Journal of peptide science : an official publication of the European Peptide Society · 2014
    Article
  20. Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Santosh K MahtoDepartment of Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
Cecil J Howard
John C Shimko
Jennifer J Ottesen
The Ohio State University · US

Funding

Mechanisms of Chromatin Transcriptional RegulationR01GM083055 · NIGMS · OHIO STATE UNIVERSITY · PI POIRIER, MICHAEL GUY · 2008 to 2016
$2.7M
NIGMS NIH HHS GM083055NIGMS NIH HHS R01 GM083055
6 · The paper itself

Abstract

C-terminal peptide thioesters are an essential component of the native chemical ligation approach for the preparation of fully or semisynthetic proteins. However, the efficient generation of C-terminal thioesters by Fmoc solid-phase peptide synthesis remains a challenge. The recent N-acylurea approach to thioester synthesis relies on the deactivation of one amine of 3,4-diaminobenzoic acid (Dbz) during Fmoc SPPS. Here, we demonstrate that this approach results in the formation of side products through the over-acylation of Dbz, particularly when applied to Gly-rich sequences. We find that orthogonal allyloxycarbonyl (Alloc) protection of a single Dbz amine eliminates these side products. We introduce a protected Fmoc-Dbz(Alloc) base resin that may be directly used for synthesis with most C-terminal amino acids. Following synthesis, quantitative removal of the Alloc group allows conversion to the active N-acyl-benzimidazolinone (Nbz) species, which can be purified and converted in situ to thioester under ligation conditions. This method is compatible with the automated preparation of peptide-Nbz conjugates. We demonstrate that Dbz protection improves the synthetic purity of Gly-rich peptide sequences derived from histone H4, as well as a 44-residue peptide from histone H3.

Indexed as

AcylationAmino Acid SequenceAminobenzoatesEstersMolecular Sequence DataPeptidesSolid-Phase Synthesis TechniquesSulfhydryl CompoundsUrea3,4-diaminobenzoic acidAminobenzoatesEstersPeptidesSulfhydryl CompoundsUrea

Identifiers

PMID21910203
PMCPMC3558277
OpenAlexW2061223277

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.