Evidence map›Paper›PMID 25187567›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Reprogramming the specificity of sortase enzymes.

Brent M Dorr, Hyun Ok Ham, Chihui An, Elliot L Chaikof, David R Liu

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed
–field-weighted citation impact
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

97 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Substrate biasing in UCHL5 proteoforms.bioRxiv : the preprint server for biology · 2026
    Article
  5. Article
  6. Article
  7. Sortase A Catalyzed Transpeptidation for Protein Bioengineering.Methods in molecular biology (Clifton, N.J.) · 2026
    Article
  8. Article
  9. Review
  10. Enzymatic Methods for Assembling and Modifying Hydrogel Biomaterials.Regenerative engineering and translational medicine · 2025
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Proximity Labeling of Cell Surface Proteins via Cell Surface Remodeling.Methods in molecular biology (Clifton, N.J.) · 2025
    Article
  18. Article
  19. Article
  20. Article

37 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

5 authors.

Brent M DorrHoward Hughes Medical Institute, Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138; and.
Hyun Ok HamDepartment of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering at Harvard University, Boston, MA 02115.
Chihui AnHoward Hughes Medical Institute, Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138; and.
Elliot L ChaikofDepartment of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, and the Wyss Institute of Biologically Inspired Engineering at Harvard University, Boston, MA 02115.
David R LiuHoward Hughes Medical Institute, Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138; and drliu@fas.harvard.edu.

Funding

MEMBRANE-MIMETIC ASSEMBLIES FOR ENDOTHELIAL MIGRATIONR01HL056819 · NHLBI · EMORY UNIVERSITY · PI CHAIKOF, ELLIOT · 1998 to 2016
$5.2M
Expanding the Scope of Protein EvolutionR01GM065400 · NIGMS · HARVARD UNIVERSITY · PI LIU, DAVID R · 2002 to 2010
$2.5M
Howard Hughes Medical InstituteNHLBI NIH HHS R01 HL056819NHLBI NIH HHS R01 HL56819NIGMS NIH HHS R01 GM065400
6 · The paper itself

Abstract

Staphylococcus aureus sortase A catalyzes the transpeptidation of an LPXTG peptide acceptor and a glycine-linked peptide donor and has proven to be a powerful tool for site-specific protein modification. The substrate specificity of sortase A is stringent, limiting its broader utility. Here we report the laboratory evolution of two orthogonal sortase A variants that recognize each of two altered substrates, LAXTG and LPXSG, with high activity and specificity. Following nine rounds of yeast display screening integrated with negative selection, the evolved sortases exhibit specificity changes of up to 51,000-fold, relative to the starting sortase without substantial loss of catalytic activity, and with up to 24-fold specificity for their target substrates, relative to their next most active peptide substrate. The specificities of these altered sortases are sufficiently orthogonal to enable the simultaneous conjugation of multiple peptide substrates to their respective targets in a single solution. We demonstrated the utility of these evolved sortases by using them to effect the site-specific modification of endogenous fetuin A in human plasma, the synthesis of tandem fluorophore-protein-PEG conjugates for two therapeutically relevant fibroblast growth factor proteins (FGF1 and FGF2), and the orthogonal conjugation of fluorescent peptides onto surfaces.

Indexed as

alpha-2-HS-GlycoproteinAminoacyltransferasesBacterial ProteinsBiocatalysisCysteine EndopeptidasesDirected Molecular EvolutionHumansModels, MolecularMutant ProteinsStaphylococcus aureusSubstrate Specificityalpha-2-HS-GlycoproteinAminoacyltransferasesBacterial ProteinsCysteine EndopeptidasesMutant Proteinssortase Aenzyme specificityprotein evolution

Identifiers

PMID25187567
PMCPMC4169943

What OpenQuestion holds

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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.