Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Fluorescent sensors for adenine-containing or polyphosphate-containing nucleotides. (a) Toc-fApt contains a fluorescein labeled adenine-binding aptamer (f-Apt) anchored to the cell surface by tocopherol. (b) A Zn2+-binding xanthene derivative adheres to the cell membrane through its hydrophobic tail. Binding to polyphosphate restores its fluorescence.
