Evolving Accelerated Amidation by SpyTag/SpyCatcher to Analyze Membrane Dynamics.

Autor: Keeble AH; Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK., Banerjee A; Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK., Ferla MP; Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK., Reddington SC; Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK., Anuar INAK; Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK., Howarth M; Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2017 Dec 22; Vol. 56 (52), pp. 16521-16525. Date of Electronic Publication: 2017 Dec 05.
DOI: 10.1002/anie.201707623
Abstrakt: SpyTag is a peptide that forms a spontaneous amide bond with its protein partner SpyCatcher. This protein superglue is a broadly useful tool for molecular assembly, locking together biological building blocks efficiently and irreversibly in diverse architectures. We initially developed SpyTag and SpyCatcher by rational design, through splitting a domain from a Gram-positive bacterial adhesin. In this work, we established a phage-display platform to select for specific amidation, leading to an order of magnitude acceleration for interaction of the SpyTag002 variant with the SpyCatcher002 variant. We show that the 002 pair bonds rapidly under a wide range of conditions and at either protein terminus. SpyCatcher002 was fused to an intimin derived from enterohemorrhagic Escherichia coli. SpyTag002 reaction enabled specific and covalent decoration of intimin for live cell fluorescent imaging of the dynamics of the bacterial outer membrane as cells divide.
(© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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