A 1091 base pair fragment from the flanking non-coding or intronic region of VGlut is fused upstream of a Drosophila core synthetic promoter (DSCP) followed by sequence encoding a lexA::p65 driver. The driver sequence has been optimized for Drosophila codon usage. An Hsp70 transcriptional terminator is present.
Optogenetic activation (using Crei\ChR2H134R.UAS.mCherry with 470 nm (blue) light) of Ecol\lexAGMR50G08 cells in larvae results in inhibitory postsynaptic currents in multiple types of motor neuron, including RP2 and RP3, and inward currents in astrocytes, which are not seen in unstimulated conditions.
Cnoc\ChR1::Csub\ChRCsChrimson.IVS.13XLexAop2.Venus, Eaat1KK100187, Ecol\lexAGMR50G08, Scer\GAL4alrm.PD has abnormal neurophysiology | larval stage | conditional phenotype
Cnoc\ChR1::Csub\ChRCsChrimson.IVS.13XLexAop2.Venus, Ecol\lexAGMR50G08 has embryonic/larval astrocyte-like glial cell | conditional phenotype, suppressible by Eaat1KK100187/Scer\GAL4alrm.PD
Cnoc\ChR1::Csub\ChRCsChrimson.IVS.13XLexAop2.Venus, Eaat1KK100187, Ecol\lexAGMR50G08, Scer\GAL4alrm.PD has larval RP2 motor neuron | conditional phenotype
Cnoc\ChR1::Csub\ChRCsChrimson.IVS.13XLexAop2.Venus, Eaat1KK100187, Ecol\lexAGMR50G08, Scer\GAL4alrm.PD has embryonic/larval motor neuron | conditional phenotype
Expression of Eaat1KK100187 under the control of Scer\GAL4alrm.PD fully suppresses the inward currents in astrocytes and significantly alters the properties of the inhibitory postsynaptic currents in motor neurons, including RP2, that result from optogenetic activation (using Crei\ChR2H134R.UAS.mCherry with 470 nm (blue) light) of Ecol\lexAGMR50G08 cells in larvae.
Although alleles from the Janelia Farm lexA driver collection incorporate the same enhancer fragments used to create the Janelia Farm GAL4 driver alleles (GMR_Brain_exp_1), significant differences are frequently observed in the expression pattern of a given enhancer fragment inserted in the P{CaryP}attP40 or other docking site compared to the same fragment inserted in the P{CaryP}attP2 docking site. Generally the Ecol\lexA patterns are subsets of the Scer\GAL4 patterns.