title: Four isoforms of glutamine synthetase in light-grown soybeans.
abstract: Glutamine synthetase (GS) activity recovered from linear sucrose gradients was associated with the cytosol of cells isolated from etiolated soybean hypocotyls whereas light-grown tissue contained increased GS activity localized in both the cytosol and chloroplasts. DEAE-cellulose chromatography indicated two GS isoforms in etiolated hypocotyls whereas light-grown hypocotyls and primary leaves contained four isoforms. Only one GS isoform was recovered from both etiolated and light-grown cotyledons.
mesh_terms: D003624:Darkness; D005974:Glutamate-Ammonia Ligase / Q000302:isolation & purification / Q000378:metabolism*; D007527:Isoenzymes / Q000302:isolation & purification / Q000378:metabolism*; D007700:Kinetics; D008027:Light; D010944:Plants / Q000201:enzymology*; D013025:Glycine max
chemical_list: D007527:Isoenzymes; D005974:Glutamate-Ammonia Ligase