Glutamine synthetase (leaf,root)
AS20 4426 | Clonality: Polyclonal | Host: Rabbit | Reactivity: Arabidopsis thaliana, Spinacia oleracea, Zea mays

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Product Information
Immunogen
Purified full length, tag cleaved, recombinant Zea mays GS-1 (Glutamine synthetase, root isozyme 1) UniProt: P38559
Host
Rabbit
Clonality
Polyclonal
Purity
Total IgG. Protein A purified in PBS, 50% glycerol. Filter sterilized.
Format
Liquid at 2 mg/ml.
Quantity
100 ĩg
Storage
Store at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please remember to spin the tubes briefly prior to opening them to avoid any losses that might occur from material adhering to the cap or sides of the tube.
Tested applications
ELISA (ELISA), Western blot (WB)
Recommended dilution
assay dependent (ELISA), 1: 1000 - 1: 5000 (WB)
Expected | apparent MW
39 kDa | 43 kDa (chloroplast isoform)
Reactivity
Confirmed reactivity
Arabidopsis thaliana, Spinacia oleracea, Zea mays
Predicted reactivity
Brachypodium distachyon, Cucurbita moschata, Glycine max, Medicago truncatula, Oryza sativa, Panicum hallii, Pontederia crassipes, Populus tremula x Populus alba, Prunus persica, Raphanus sativus, Saccharum officinarum, Setaria italica, Sorghum bicolor, Triticum aestivum
Species of your interest not listed? Contact us
Species of your interest not listed? Contact us
Not reactive in
No confirmed exceptions from predicted reactivity are currently known
Application examples
Application examples
Recombinant root type GS isoproteins from Zea mays expressed in E.coli, negative control without recombinant GS (1), GS1-1 expressing extract (2), GS1-2 expressing extract (3), GS1-3 expressing extract (4), GS1-4 expressing extract (5), Zea mays root extrated treated with ammonia (6) were freshly extracted with 2x SDS-sample buffer (+ 2ME) for SDS-PAGE and denatured with 4X SDS buffer at 95°C for 5 min. Samples were separated on 10% SDS-PAGE and blotted 1h to PVDF membrane. Blot was blocked with 3 % skim milk/TBS-T, 1h/RT with agitation. Blot was incubated in the primary antibody at a dilution of 1: 2500 in TBS-T for 1h/RT. The antibody solution was decanted and the blot was washed 4 times for 10 min in TBS-T at RT with agitation. Blot was incubated in matching secondary antibody (anti-rabbit IgG horse radish peroxidase conjugated) diluted to 1:10 000 in for 1h/RT with agitation. The blot was washed as above and developed with a chemiluminescent detection reagent, following manufacture's recommendation.
The lower band in endogenous extract is ammonia induced GS.

2 µg of Arabiopsis thaliana total leaf extract (1), 2 µg of Zea mays total leaf extract (2), were freshly extracted with 2x SDS-sample buffer (+ 2ME) for SDS-PAGE and denatured with 4X SDS buffer at 95°C for 5 min. Samples were separated on 10% SDS-PAGE and blotted 1h to PVDF membrane. Blot was blocked with 3 % skim milk/TBS-T, 1h/RT with agitation. Blot was incubated in the primary antibody at a dilution of 1: 1000 in TBS-T for 1h/RT. The antibody solution was decanted and the blot was washed 4 times for 10 min in TBS-T at RT with agitation. Blot was incubated in matching secondary antibody (anti-rabbit IgG horse radish peroxidase conjugated) diluted to 1:10 000 in for 1h/RT with agitation. The blot was washed as above and developed with a chemiluminescent detection reagent, following manufacture's recommendation.
MW of GS1 isoproteins: 38-40 kDa and this antibody reacts with both leat and root isoforms. Maize leaf contains both types. The upper band with asterisk corresponds to leaf isoform (chloroplastic), while the lower two bands correspond to root isoforms GS1-1 or/and GS1-2 (upper band) or/and GS1-4 (lower band).

Recombinant root type GS isoproteins from Zea mays expressed in E.coli, negative control without recombinant GS (1), GS1-1 expressing extract (2), GS1-2 expressing extract (3), GS1-3 expressing extract (4), GS1-4 expressing extract (5), Zea mays root extrated treated with ammonia (6) were freshly extracted with 2x SDS-sample buffer (+ 2ME) for SDS-PAGE and denatured with 4X SDS buffer at 95°C for 5 min. Samples were separated on 10% SDS-PAGE and blotted 1h to PVDF membrane. Blot was blocked with 3 % skim milk/TBS-T, 1h/RT with agitation. Blot was incubated in the primary antibody at a dilution of 1: 2500 in TBS-T for 1h/RT. The antibody solution was decanted and the blot was washed 4 times for 10 min in TBS-T at RT with agitation. Blot was incubated in matching secondary antibody (anti-rabbit IgG horse radish peroxidase conjugated) diluted to 1:10 000 in for 1h/RT with agitation. The blot was washed as above and developed with a chemiluminescent detection reagent, following manufacture's recommendation.
The lower band in endogenous extract is ammonia induced GS.

2 µg of Arabiopsis thaliana total leaf extract (1), 2 µg of Zea mays total leaf extract (2), were freshly extracted with 2x SDS-sample buffer (+ 2ME) for SDS-PAGE and denatured with 4X SDS buffer at 95°C for 5 min. Samples were separated on 10% SDS-PAGE and blotted 1h to PVDF membrane. Blot was blocked with 3 % skim milk/TBS-T, 1h/RT with agitation. Blot was incubated in the primary antibody at a dilution of 1: 1000 in TBS-T for 1h/RT. The antibody solution was decanted and the blot was washed 4 times for 10 min in TBS-T at RT with agitation. Blot was incubated in matching secondary antibody (anti-rabbit IgG horse radish peroxidase conjugated) diluted to 1:10 000 in for 1h/RT with agitation. The blot was washed as above and developed with a chemiluminescent detection reagent, following manufacture's recommendation.
MW of GS1 isoproteins: 38-40 kDa and this antibody reacts with both leat and root isoforms. Maize leaf contains both types. The upper band with asterisk corresponds to leaf isoform (chloroplastic), while the lower two bands correspond to root isoforms GS1-1 or/and GS1-2 (upper band) or/and GS1-4 (lower band).
Additional information
Additional information
This antibody reactis with all glutamine synthetase isotypes from leaf and root
No confirmed exceptions from predicted reactivity are currently known
Background
Background
Glutamine synthetase plays a role in the flow of nitrogen into nitrogenous organic compounds. There are five root types of GS isoproteis (GS1-1~ GS1-5) and one chloroplastic GS isoprotein (GS2/GLN2) are known. The sequence identity between GS1-1 and GS2 is 65%.
Product citations
Selected references
Kimata-Ariga and Hase (2014). Multiple complexes of nitrogen assimilatory enzymes in spinach chloroplasts: possible mechanisms for the regulation of enzyme function. PLoS One . 2014 Oct 1;9(10):e108965. doi: 10.1371/journal.pone.0108965.
Sakaibara et al. (1996). Molecular identification and characterization of cytosolic isoforms of glutamine synthetase in maize roots. J Biol Chem. 1996 Nov 22;271(47):29561-8. doi: 10.1074/jbc.271.47.29561.
Sakaibara et al. (1996). Molecular identification and characterization of cytosolic isoforms of glutamine synthetase in maize roots. J Biol Chem. 1996 Nov 22;271(47):29561-8. doi: 10.1074/jbc.271.47.29561.
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