GluTR | Glutamyl -tRNA reductase
AS10 689 | Clonality: Polyclonal | Host: Rabbit | Reactivity: Arabidopsis thaliana, Hordeum vulgare, Nicotiana tabacum
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58 | kDa (Arabidopsis thaliana)
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10 ul of leaf extract which was equivalent to 1 mg leaf material was loaded per lane, which may also correspond to approximately 50 ug protein. Arabidopsis thaliana seedlings were grown on vermiculite for 3 weeks under continuous illumination at a light intensity of 80 uE m-2 s-1 at 22°C. Twenty mg leaf material was collected from mature leaves and extracted with 200 ul of the tissue homogenization buffer. 10 ul of leaf extract which was equivalent to 1 mg leaf material was loaded per lane. Detection Protocol: Leaf protein was separated on 14% SDS-PAGE and blotted 2h to PVDF membrane from GE Healthcare. The blot was blocked with PBS-T (PBS plus 0.1% tween 20) containing 3% skim milk for 1h at room temperature (RT: approximately 22 degrees C) with gentle agitation. The blots were briefly washed twice with PBS-T and then incubated with anti-GluTR antibody which was diluted 1:1000 with PBS-T for 1h at RT with agitation. The primary antibody solution was decanted and the blot was rinsed twice, when washed once for 10 min and 3 times for 5 min in PBS-Tcontaining 0.5% (w/v) skim milk at RT with agitation. The blot was incubated with the secondary antibody (HRP-conjugated anti-rabbit IgG) which was diluted 1:20 000 with PBS-T containing 0.5% (w/v) skim milk for 1h at RT with agitation. The blot was washed as described above and incubated with Western Lightning Plus-ECL from Perkin-Elmer for 1 min. The chemiluminescent signal was captured with a CCD camera (LumiVision: Aisin Seiki Inc. Aichi, Japan) for 60 s.
Plant material grown for the experiment illustrated below: barley seeds were sawn on vermiculite and grown for 6 days in darkness at 22°C. Subsequently, seedlings were illuminated for 24 hours under a light intensity of 80 uE m-2 s-1. Approximately, 100 mg of Hordeum vulgare leaf material was harvested before illumination (1), and 2 h (2), 6 h (3) and 24 hours (4) after the onset of light; Arabidopsis thaliana wt (5). Each leaf material was extracted with 1 ml of the tissue homogenization solution (50 mM Tris Cl pH8.0, 2% Lithium Dodesyl Sulfate, 12% sucrose, 1.5% dithiothreitol).
Courtesy of Kaori TAKAHASHI and Ryouichi TANAKA (Hokkaido University)
Antibody reacts with recombinant GluTR isoforms: AtGluTR1, AtGluTR2 and NtGluTR1 (At - Arabidopsis thaliana, Nt - Nicotiana tabacum).
GluTR (glutamyl tRNA reductase) belongs to a family of oxidoreductases and is involved in porphyrin and chlorophyll biosynthesis. This enzyme class is called L-glutamate-semialdehyde: NADP+ oxidoreductase (L-glutamyl-tRNAGlu-forming).
Montandon et al. (2019). In vivo trapping of proteins interacting with the chloroplast CLPC1 chaperone; potential substrates and adaptors. J Proteome Res. 2019 May 9. doi: 10.1021/acs.jproteome.9b00112.
Nishimura et al. (2013). ClpS1 Is a Conserved Substrate Selector for the Chloroplast Clp Protease System in Arabidopsis. The Plant Cell June 2013.
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