Preliminary work on a crude in vitro system for glutamic-γ-semialdehyde
synthesis in Escherichia coli has been described. The
cell extract synthesis of GSA is inhibited by proline; other allosteric
characteristics observed include sigmoidal substrate variation and
inhibition plots of activity. The membrane fraction and a low molecular
weight compound in...
Growth and replacement patterns of four successionally important
species occurring on Douglas fir clear-cuts were investigated
from September 1964 to June 1967. The study was carried out
on the Marys Peak watershed located near Corvallis, Oregon.
Species used in the study include Holcus lanatus, Senecio
jacobaea, Lotus crassifolius var. subglaber,...