Description
ExcelTaq™ Taq DNA Polymerase is a recombinant thermo-stable Taq DNA polymerase expressed and purified from an E. coli strain carrying the cloned gene. With a high DNA synthesis rate and high thermo-stability, ExcelTaq™ Taq DNA Polymerase is suitable for common and specialized PCR applications.
Features
- 5'→3' DNA polymerase activity 
- 5'→3' exonuclease activity 
- No detectable 3'→5' exonuclease (proofreading) activity 
- Generates PCR products with 3’-dA overhangs 
- Thermo-stable – half-life lasts for more than 40 min at 95°C 
Applications
- Routine PCR 
- Amplification of DNA fragments up to 8 kb 
- Generation of PCR products for TA cloning 
- DNA labeling 
Storage
-20°C for 24 months
Elongation capability
ExcelTaq™ Taq DNA Polymerase can amplify PCR products from λDNA up to 15 kb (M: DM3100).
Sensitivity
ExcelTaq™ Taq DNA Polymerase can amplify PCR products from as little as 1 fg of template DNA (M: DM3100).
Contents
| 
 | 
Storage Buffer
20 mM Tris-HCl (pH 8.0), 100 mM KCl, 0.1 mM EDTA, 1 mM DTT, stabilizer, 50% (v/v) glycerol
10X Taq buffer
200 mM Tris-HCl (pH 8.8 at 25°C), 100 mM KCl, 100 mM (NH4)2SO4, 20 mM MgCl2, 1% Triton X-100
Unit Definition
One unit is defined as the amount of enzyme that will incorporate 10 nmol of dNTP into acid-insoluble material in 30 minutes at 74°C.
Storage
-20°C for 24 months
Recommended PCR Condition
| Template | 1 – 150 ng | 
| Forward primer | 0.1 – 0.5 µM | 
| Reverse primer | 0.1 – 0.5 µM | 
| 10X Taq Buffer | 5 µl | 
| dNTPs | 0.2 mM (each) | 
| Taq DNA Polymerase | 0.25 µl (1.25U) | 
| ddH2O | to 50 µl | 
| Total volume | 50 µl | 
Recommended PCR Program
| Steps | Temp. | Time | Cycles | 
| Template denature | 94°C | 2 min | 1 | 
| Denature | 94°C | 30 sec | 25-40 | 
| Annealing | 50-68°C* | 30 sec | |
| Extension | 72°C | 30 sec/kb | |
| Final extension | 72°C | 1 min | 1 | 
*Optimal PCR condition varies according to primers’ thermodynamic properties.
Caviedes-Triana K, Duque-Granda D, Cadavid-Restrepo G, Moreno-Herrera CX, Vivero-Gomez R. PLoS Negl Trop Dis. 2025 Sep 5;19(9):e0013445. doi: 10.1371/journal.pntd.0013445
PMCID: PMC12412933
Julián Marín-Villa , Albeiro López-Herrera , Daisy A Gómez-Ruiz , Diana C Restrepo-Rodas , Geraldine Sánchez-Rodríguez , Cristina Úsuga-Monroy
Vet World. 2025 May;18(5):1389-1399. doi: 10.14202/vetworld.2025.1389-1399. Epub 2025 May 31.
PMCID: PMC12205242
Machado-Agudelo DA, García MA, Rueda-Páramo ME, Cardona NL.
Biomedica. 2024 Nov 6;44(4):552-563. doi: 10.7705/biomedica.7520.
PMCID: PMC11784657
Watcharapong Mitsuwan, Ratchadaporn Boripun, Phirabhat Saengsawang, Sutsiree Intongead, Sumaree Boonplu, Rawiwan Chanpakdee, Yukio Morita, Sumalee Boonmar, Napapat Rojanakun, Natnicha Suksriroj, Chollathip Ruekaewma, Titima Tenitsara
Antibiotics (Basel). 2025 Feb 25;14(3):235. doi: 10.3390/antibiotics14030235.
PMCID: PMC11939528
Ohnishi T, Nakamura T, Shima K, Noguchi K, Chiba N, Matsuguchi T.
J Oral Biosci. 2022 Jun;64(2):229-236. doi: 10.1016/j.job.2022.04.004. Epub 2022 Apr 25.
PMCID: PMC9035663
Repurposing existing drugs: identification of SARS-CoV-2 3C-like protease inhibitors.
Chiou WC, Hsu MS, Chen YT, Yang JM, Tsay YG, Huang HC, Huang C.
J Enzyme Inhib Med Chem. 2021 Dec;36(1):147-153. doi: 10.1080/14756366.2020.1850710.
PMCID: PMC7808739
The inhibitory effects of PGG and EGCG against the SARS-CoV-2 3C-like protease
Mutations in the PKM2 exon-10 region are associated with reduced allostery and increased nuclear translocation.
Chen TJ, Wang HJ, Liu JS, Cheng HH, Hsu SC, Wu MC, Lu CH, Wu YF, Wu JW, Liu YY, Kung HJ, Wang WC.
Commun Biol. 2019 Mar 15;2:105. doi: 10.1038/s42003-019-0343-4. eCollection 2019.
PMCID: PMC6420622
[RP1000] ExcelRT™ Reverse Transcriptase
- High yield 
- Thermostable, up to 50°C, during first strand synthesis 
- High processivity, generating cDNA up to 8 kb 
- Reduced RNase H ribonuclease activity 
[TP5000] ExcelTaq™ Hot Start II DNA Polymerase
- Aptamer-based hot start PCR 
- Reversible enzyme inactivation 
- Omits extra enzyme activation step 
- Convenient for room temperature PCR set-up 
- High yield and specificity of target amplicons 
- Wide range of amplicon length (up to 10 kb) 
- High sensitivity (as low as 1 fg of plasmid) 
[TQ1200] ExcelTaq™ 2X Fast Q-PCR Master Mix (SYBR, no ROX)
- High Stability 
- Fast Hot Start 
- High Sensitivity 
- Low Background / High Specificity 
- Suitable for Fast Program 
- Smart Blue Contrast Dye 
[TP1200] ExcelTaq™ 5X PCR Master Dye Mix
- 5’→3’ DNA polymerase activity 
- No detectable 3'→5' exonuclease (proofreading) activity 
- Generates PCR products with 3'-dA overhangs 
- High yield PCR 
- High reproducibility 
- Reduced pipetting errors 
- Includes tracking dye for direct loading after PCR