NR | Nitrate reductase, assimilatory

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AS08 310  |  Clonality: Polyclonal  |  Host: Rabbit   |  Reactivity: A. thaliana, H. vulgare, C. reinhardtii, red alga Gracilaria gracilis, diatom Thalassiosira sp., P. tricornutum Bohlin, P. yunnanensis Dode, S. lycopersicum, S. tuberosum


70 st
Item No:
AS08 310

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product information

Assimilatory nitrate reductase (NR), (EC. catalyses the reduction of nitrate to nitrite in the cytoplasm. Plants contain 2 forms of NR: NADH-NR (most common form in plants and algae, predominantly found in green tissues) and NAD(P)H-NR (uses NADH or NADPH as the electron donor, constitutively expressed in plants at a low level). NADH-NR is a homodimer of two identical subunits (100-115 kDa each, hold together by a Mo-cofactor) each of them coded by up to three genes (NR1-3, NIA1-NIA3).


KLH-conjugated synthetic peptide derived from conserved domain in NADH-NR protein sequences including A.thaliana NR1 P11832, At1g77760 and NR2 P11035, At1g37130

Host Rabbit
Clonality Polyclonal
Purity Affinity purified serum in PBS, pH 7.4
Format Lyophilized
Quantity 50 µg
Reconstitution For reconstitution add 25 µl of sterile water.
Storage Store lyophilized/reconstituted at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please, remember to spin tubes briefly prior to opening them to avoid any losses that might occur from lyophilized material adhering to the cap or sides of the tubes.
Tested applications Western blot (WB)
Related products

AS12 2611 | NRT1.1 | NITRATE TRANSPORTER 1.1, rabbit antibody
AS12 2612 | NRT2.1 | NITRATE TRANSPORTER 2.1, rabbit antibody
AS09 473 | NRT1.4 | nitrate transporter, rabbit antibody

Plant protein extraction buffer

Secondary antibodies

Additional information
application information
Recommended dilution 1 : 500-1 : 1000 (WB)
Expected | apparent MW

103 kDa | 117 kDa

Confirmed reactivity Arabidopsis thaliana, Chlamydomonas reinardtii, Cucumis sativus, red alga Gracilaria gracilis, Hordeum vulgare, Phaeodactylum tricornutum Bohlin accession Pt1 8.6, Populus yunanensis Dode, Solanum lycopersicum, Solanum tuberosum, diatom Thalassiosira sp., Vigna radiata
Predicted reactivity Arabis alpina, Brachypodium distachyon, Brassica napus, Brassica rapa subsp. pekinensis, Capsella rubella, Citrus clementina, Citrus sinensis, Chlorella vulgaris, Dunaliella salina, marine Diatoms, Coffea canephora, Eucalyptus grandis, Glycine max, Glycine soja, Gossypium arboretum, Lycopersicum esculentum, Morus alba, Nicotiana tabacum, Nicotiana attenuata, Nicotiana benthamiana, Oryza sativa, Phaseolus vulgaris, Phytophthora infestans, Physcomitrella patens, Prunus persica, Ricinus communis, Sorghum bicolor, Spinacia oleracea, Solanum lycopersicum, Theobroma cacao, Zea mays, Vitis vinifera
Not reactive in

Aspergilus niger

Additional information
ECL based detection systems are adviced to use since to low signal intensity can be obtaied with BCIP/NBT system.

For working with diatom samples ECL Advance (GE Healthcare) or other more sensitive ECL detection reagent is recommended.

In Chlamydmonas reinhardtii anti-NR antibody is also reacting with L-Aminoacid Oxidase (a nitrogen scavenging enzyme induced during nitrogen starvation).
Selected references Reda et al. (2017). Involvement of NR and PM-NR in NO biosynthesis in cucumber plants subjected to salt stress. Plant Science Volume 267, February 2018, Pages 55-64.
Jayawardena et al. (2016). Elevated CO2 plus chronic warming reduces nitrogen uptake and levels or activities of nitrogen -uptake and -assimilatory proteins in tomato roots. Physiol Plant. 2016 Nov 28. doi: 10.1111/ppl.12532. [Epub ahead of print]
Chen et al. (2016). The role of nitric oxide signalling in response to salt stress in Chlamydomonas reinhardtii. Planta. 2016 Sep;244(3):651-69. doi: 10.1007/s00425-016-2528-0. Epub 2016 Apr 26.

Application example

western blot with anti-NR antibodies

20 µg of total protein from Arabidopsis thaliana leaf (1)  and Hordeum vulgare leaf (2) were extracted with Protein Extraction Buffer PEB (AS08 300). Samples were diluted with 1X sample buffer (NuPAGE LDS sample buffer (Invitrogen) supplemented with 50 mM DTT and heat at 70°C for 5 min and keept on ice before loading. Protein samples were separated on 4-12% Bolt Plus gels,  LDS-PAGE and blotted for 70 minutes to PVDF using tank transfer. Blots were blocked immediately following transfer in 2% blocking reagent (GE RPN 2125; Healthcare) or 5% non-fat milk dissolved in 20 mM Tris, 137 mM sodium chloride pH 7.6 with 0.1% (v/v) Tween-20 (TBS-T) for 1h at room temperature with agitation. Blots were incubated in the primary antibody at a dilution of 1: 5 000 (in blocking reagent) for 1h at room temperature with agitation. The antibody solution was decanted and the blot was rinsed briefly twice, and then washed 1x15 min and 3x5 min with TBS-T at room temperature with agitation. Blots were incubated in secondary antibody (anti-rabbit IgG horse radish peroxidase conjugated, recommended secondary antibody AS09 602, Agrisera) diluted to 1:20 000 in blocking reagent for 1h at room temperature with agitation. The blots were washed as above. The blot was developed for 5 min with TMA-6 (Lumigen) detection reagent according the manufacturers instructions. Images of the blots were obtained using a CCD imager (VersaDoc MP 4000) and Quantity One software (Bio-Rad). Exposure time was 5 minutes.

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