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Cited by 1,662

The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Peptide tag forming a rapid covalent bond to a protein, through engineering a bacterial adhesin

Open access
Zakeri, Bijan, Fierer, Jacob O., Celik, Emrah, Chittock, Emily C., Schwarz-Linek, Ulrich, Moy, Vincent T., Howarth, Mark·2012·Proceedings of the National Academy of Sciences

Abstract

Protein interactions with peptides generally have low thermodynamic and mechanical stability. Streptococcus pyogenes fibronectin-binding protein FbaB contains a domain with a spontaneous isopeptide bond between Lys and Asp. By splitting this domain and rational engineering of the fragments, we obtained a peptide (SpyTag) which formed an amide bond to its protein partner (SpyCatcher) in minutes. Reaction occurred in high yield simply upon mixing and amidst diverse conditions of pH, temperature, and buffer. SpyTag could be fused at either terminus or internally and reacted specifically at the mammalian cell surface. Peptide binding was not reversed by boiling or competing peptide. Single-molecule dynamic force spectroscopy showed that SpyTag did not separate from SpyCatcher until the force exceeded 1 nN, where covalent bonds snap. The robust reaction conditions and irreversible linkage of SpyTag shed light on spontaneous isopeptide bond formation and should provide a targetable lock in cells and a stable module for new protein architectures.

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Metadata

Authors
Zakeri, B., Fierer, J. O., Celik, E., Chittock, E. C., Schwarz-Linek, U., Moy, V. T., & Howarth, M.
Venue
Proceedings of the National Academy of Sciences
Published
2012-02-24
Volume
109
Issue
12
Pages
E690-7
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1976672416
Cited by
1,662
References
3
FWCI
6.04
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Peptide tag forming a rapid covalent bond to a protein, through engineering a bacterial adhesin. https://app.cochat.ai/papers/10.1073/pnas.1115485109
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Zakeri, B., Fierer, J. O., Celik, E., Chittock, E. C., Schwarz-Linek, U., Moy, V. T., & Howarth, M. (2012). Peptide tag forming a rapid covalent bond to a protein, through engineering a bacterial adhesin. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1115485109

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