Binds a [3Fe-4S] cluster as well as FAD and FMN. The protein is composed of two domains, one hydrolysing L-glutamine to NH3 and L-glutamate (cf. EC 3.5.1.2, glutaminase), the other combining the produced NH3 with 2-oxoglutarate to produce a second molecule of L-glutamate. The NH3 is channeled through a 24 A channel in the active protein. No hydrolysis of glutamine takes place without ferredoxin and 2-oxoglutarate being bound to the protein [5,6].
Binds a [3Fe-4S] cluster as well as FAD and FMN. The protein is composed of two domains, one hydrolysing L-glutamine to NH3 and L-glutamate (cf. EC 3.5.1.2, glutaminase), the other combining the produced NH3 with 2-oxoglutarate to produce a second molecule of L-glutamate. The NH3 is channeled through a 24 A channel in the active protein. No hydrolysis of glutamine takes place without ferredoxin and 2-oxoglutarate being bound to the protein [5,6].
Glu1 is involved in the primary nitrogen assimilation, primary nitrogen assimilation and glutamate metabolism overview. Metabolic profiling and gene expression profiling in glu1-2 knockout mutant, most significantly affected pathways in the Glu1 knockout mutant glu1-2, photosynthesis, photorespiratory cycle and chlorophyll biosynthesis show an overall downregulation in glu1-2 leaves in accordance with their slight chlorotic phenotype, numerous other responsive genes linked to a number of different stresses/stimuli are induced in glu1-2 leaves, very detailed overview
GLU1 is involved in iron homeostasis through affecting glutamate synthesis under iron deficiency conditions in Arabidopsis. Lesion of GLU1 results in reduced transcription of many iron-deficiency responsive genes in roots and shoots. The mutant plants reveal a decreased iron concentration in the shoots, and display severe leaf chlorosis under the condition of iron limitation, compared to wild-type. The product of GLU1, glutamate, can chelate iron in vivo and promote iron transportation
knockout mutant glu1-2, with a T-DNA insertion in the Fd-GOGAT1, lacks expression of Fd-GOGAT1, transcriptional profiling of glu1-2 showing activation of multiple stress responses, mimicking cold, heat, drought and oxidative stress, overview. NMR analysis of glu1-2 mutant leaves and roots reveal differences in amino acid contents compared to the wild-type, overview
knockout mutant glu1-2, with a T-DNA insertion in the Fd-GOGAT1, lacks expression of Fd-GOGAT1, transcriptional profiling of glu1-2 showing activation of multiple stress responses, mimicking cold, heat, drought and oxidative stress, overview. NMR analysis of glu1-2 mutant leaves and roots reveal differences in amino acid contents compared to the wild-type, overview
Assimilation of excess ammonium into amino acids and nitrogen translocation in Arabidopsis thaliana - roles of glutamate synthases and carbamoylphosphate synthetase in leaves
Transcriptional profiling of an Fd-GOGAT1/GLU1 mutant in Arabidopsis thaliana reveals a multiple stress response and extensive reprogramming of the transcriptome