Issue 1, 2021

Self-assembling nitrilotriacetic acid nanofibers for tracking and enriching His-tagged proteins in living cells

Abstract

Specific and expeditious identification and enrichment of target proteins in living cells is often a challenging task. The hexahistidine (6His) tag is frequently used to label artificially engineered proteins produced in prokaryotic or eukaryotic cells. Utilizing the interaction between 6His-tag and nitrilotriacetic acid (NTA) mediated by divalent metal ions (Ni2+, Cu2+, Zn2+ or Co2+), we designed and synthesized a series of Nap-G/Biotin/ANA-FFpYGK-NTA probes that, assisted by alkaline phosphatase (ALP), self-assemble into nanofibers. The probe consists of an NTA group that specifically binds to 6His-tag, an FFpY group that promotes self-assembly facilitated by ALP, and a hydrophobic (Nap-G/ANA/Biotin) capping group for various applications. We demonstrate that the ANA-FFpYGK-NTA(Ni2+) nanofibers are fit for real-time tracking of His-tagged protein in living cells, and the Biotin-FFpYGK-NTA(Ni2+) nanofibers are for isolating His-tagged proteins and other proteins that they interact with.

Graphical abstract: Self-assembling nitrilotriacetic acid nanofibers for tracking and enriching His-tagged proteins in living cells

Supplementary files

Article information

Article type
Communication
Submitted
25 Sep 2020
Accepted
26 Nov 2020
First published
26 Nov 2020

J. Mater. Chem. B, 2021,9, 80-84

Self-assembling nitrilotriacetic acid nanofibers for tracking and enriching His-tagged proteins in living cells

L. Zhang, Y. Yin, L. Wang, Y. Xia, S. Ryu, Z. Xi, L. Li and Z. Zhang, J. Mater. Chem. B, 2021, 9, 80 DOI: 10.1039/D0TB02302G

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