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.
Representative in vitro 31P-NMR spectra (perchloric acid extracts, expanded scale from 3.7 to 4.7 ppm) of sycamore cells. Cells were incubated at various times with 100 μm homoserine at pH 6.0. Perchloric acid extracts were prepared according to the procedure described in Methods. The spectra, recorded at 20°C, are the result of 1024 transients (1 h). NMP, Nucleoside monophosphate; PCA, perchloric acid; PGA, 3-phosphoglycerate; and P-Hser, phosphohomoserine.
