This enzyme belongs to the family of glycosyltransferases, specifically the pentosyltransferases. The systematic name of this enzyme class is nicotinate-nucleotide: diphosphate phospho-alpha-D-ribosyltransferase (carboxylating). Other names in common use include quinolinate phosphoribosyltransferase (decarboxylating), quinolinic acid phosphoribosyltransferase, QAPRTase, NAD+ pyrophosphorylase, nicotinate mononucleotide pyrophosphorylase (carboxylating), and quinolinic phosphoribosyltransferase. This enzyme participates in nicotinate and nicotinamide metabolism.
Background References
1. Zhou L et al. QPRT Acts as an Independent Prognostic Factor in Invasive Breast Cancer. J Oncol. 2022 Feb
2. Zhang Q et al. Increased Expression of QPRT in Breast Cancer Infers a Poor Prognosis and Is Correlated to Immunocytes Infiltration. J Healthc Eng. 2022 Mar
Western blot analysis of QPRT on different lysates with Rabbit anti-QPRT antibody (HA721655) at 1/1,000 dilution.
Lane 1: HepG2 cell lysate (20 µg/Lane) Lane 2: MCF7 cell lysate (20 µg/Lane) Lane 3: SK-Br-3 cell lysate (20 µg/Lane) Lane 4: HEK-293 cell lysate (20 µg/Lane) Lane 5: HeLa cell lysate (20 µg/Lane)
Predicted band size: 31 kDa Observed band size: 31 kDa
Exposure time: 2 minutes 45 seconds;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721655) at 1/1,000 dilution was used in 5% NFDM/TBST at room temperature for 2 hours. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/100,000 dilution was used for 1 hour at room temperature.
☑ Knockdown (KD)
Western blot analysis of QPRT on different lysates with Rabbit anti-QPRT antibody (HA721655) at 1/2,000 dilution.
Lane 1: HAP1-parental cell lysate Lane 2: HAP1-QPRT KD cell lysate
Lysates/proteins at 10 µg/Lane.
Predicted band size: 31 kDa Observed band size: 31 kDa
Exposure time: 3 minutes; ECL: K1801;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721655) at 1/2,000 dilution was used in primary antibody dilution (K1803) at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Immunohistochemical analysis of paraffin-embedded human kidney tissue with Rabbit anti-QPRT antibody (HA721655) at 1/1,000 dilution.
The section was pre-treated using heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0) for 20 minutes. The tissues were blocked in 1% BSA for 20 minutes at room temperature, washed with ddH2O and PBS, and then probed with the primary antibody (HA721655) at 1/1,000 dilution for 1 hour at room temperature. The detection was performed using an HRP conjugated compact polymer system. DAB was used as the chromogen. Tissues were counterstained with hematoxylin and mounted with DPX.
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