You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
Nucleotide effects on glucan-synthesis activities of particulate enzymes from Saprolegnia
Vol. 159, No. 2 (1983), pp. 130-135
Published by: Springer
Stable URL: http://www.jstor.org/stable/23377046
Page Count: 6
Preview not available
Membrane-bound β-1-3- and β-1-4-glucan synthetases of Saprolegnia are affected in vitro by the presence of nucleotides. Both enzymatic activities are inhibited by uridine nucleotides. Guanosine 5′-triphosphate and ATP reduce β-1-3-glucan synthesis but stimulate β-1-4-glucan production; they also increase Vmax without effect on the Km for uridine 5′-diphosphate glucose. The stimulation by ATP could be the result of an activation or stabilization of the enzymes and might have implications for cell-wall construction during hyphal growth.
Planta © 1983 Springer