Enzymes Products & Reviews

Thermo Scientific Verso 1-step RT-qPCR Kits for SYBR Green chemistry offer a quick and simple way to detect mRNA. The Verso RT enzyme delivers high processivity and can be used at temperatures up to 57°C, delivering effective transcription through difficult RNA secondary structures. An optional RT Enhancer is also provided and can be used during the RT step to remove any DNA contamination, eliminating the need for DNase I trea…

Thermo-Start Taq DNA Polymerase is a hot-start enzyme combined with an optimized buffer system that gives superior specificity and sensitivity. The chemically modified Thermo-Start Taq remains completely inactive until it is switched on by a high temperature incubation step at the start of the PCR reaction. This prevents nonspecific amplification during reaction setup, eliminating smearing and the formation of nontarget bands.…

Thermo Scientific Verso 1-Step RT-PCR system is a complete set of RT-PCR reagents that combines everything needed for RT-PCR. The Verso RT enzyme delivers high processivity and can be used at temperatures up to 57°C, delivering effective transcription through difficult RNA secondary structures. Verso also shows a better dynamic range than standard AMV or M-MuLV enzymes, with increases in template concentration giving rise to c…

Thermo Scientific Tth DNA Ligase catalyses the ligation between double-stranded DNA molecules with 3’ hydroxyl and 5’ phosphate termini. The enzyme will also repair single-stranded nicks in double-stranded nucleic acids. Features • Ligates double-stranded DNA • Repairs single strand nicks in double-stranded DNA

Thermo Scientific Klenow Fragment is the large fragment of DNA polymerase I. It exhibits 5'→3' polymerase activity and 3'→5' exonuclease (proofreading) activity, but lacks 5'→3' exonuclease activity of DNA polymerase I. Highlights • Incorporates modified nucleotides (e.g., Cy3-, Cy5-, aminoallyl-, biotin-, digoxigenin- and fluorescently-labeled nucleotides) • Active in restriction enzyme, PCR, RT, and T4 DNA Ligase buffers A…

Thermo ScientificT4 DNA Polymerase, a template-dependent DNA polymerase, catalyzes 5'-3' synthesis from primed single-stranded DNA. The enzyme has a 3'-5' exonuclease activity, but lacks 5'-3' exonuclease activity. Highlights • Stronger 3'-5' exonuclease activity on single-stranded than on double-stranded DNA and greater (more than 200 times) than DNA polymerase I, E. coli,and Klenow fragment (see Reference1) • Active in Therm…

Thermo Scientific T4 Polynucleotide Kinase (PNK) is a tetrameric protein composed of four identical subunits. It is widely used in molecular biology to radiolabel nucleic acids and to add a phosphate to the 5'-end of dephosphorylated nucleic acids to facilitate ligations. Features • Phosphorylates 5’ ends • Transfers 32P to DNA and RNA

Thermo Scientific Exonuclease I digests single-stranded DNA 3' to 5' (requires Mg2+ and a free 3'-OH). The nuclease is inactivated by heating at 80°C for 15 minutes.

Thermo Scientific Shrimp Nuclease is an endonuclease that cleaves phosphodiester linkages in DNA to yield di- and oligonucleotides with 5’-phosphate and 3’-hydroxyl termini. The enzyme has a high preference for double-stranded DNA, and can be used to selectively degrade dsDNA, leaving ssDNA and RNA intact. The enzyme is inactivated after 15 minutes at 65 °C.

Thermo Scientific RNase A (ribonuclease A) is supplied as a chromatographically pure freeze-dried powder, salt-free for easy reconstitution in most buffers.

Thermo Scientific Ribonuclease H (RNase H) is an endonuclease that degrades the RNA portion of DNA-RNA hybrids. It hydrolyses phosphodiester bonds of RNA in RNA:DNA heteroduplexes. It produces products with 3’-OH and 5’-phosphate. RNase H will not degrade single or double-stranded DNA or RNA.

Thermo Scientific Shrimp Alkaline Phosphatase (SAP) catalyzes the dephosphorylation of 5´ phosphates from DNA and RNA and is completely and irreversibly inactivated by heating at 65°C for 15 minutes. SAP is active on 5´ overhangs, 5´ recessed and blunt ends.

Thermo Scientific X-Gal (5-bromo-4-chloro-3-indoyl-ß-D-galactopyranoside) is a chromogenic substrate used to identify recombinant plasmids. In the presence of X-Gal and IPTG, lac+ bacterial colonies appear blue, whereas recombinant colonies appear white.

Axygen X-Gal IPTG spray is a convenient ready-to-use solution of optimal quantities of IPTG, X-Gal and stabilizers presented in a spray bottle for easy, accurate and consistent screening of Blue/White colonies. Advantages of Axygen X-Gal-IPTG Spray include:• Easy, accurate and convenient. • Sprays deliver optimal concentration and volume consistently for consistent and accurate results. • No need to weigh X-Gal and IPTG and…

Finnzymes’ novel PowerCut™ Dicer produces a pool of 25–27 nucleotide-long siRNA molecules from any dsRNA. This efficient endoribonuclease originating from Giardia intestinalis outperforms all other siRNA producing enzymes by cleaving the substrate with 100 % efficiency yet leaving the resulting siRNA intact. The high quality siRNA produced is ideal for gene silencing studies, for example. Pooled siRNAs are also preferred over…

The TMB SENS is the latest TMB substrate released from our R&D team. The sensitivity of this TMB product is superior in todays marketplace. When comparing the TMB SENS with TMB ONE the OD-values more than double. Recommended for ELISA procedures, liquid TMB yields a soluble blue end product read at 655 nm. For all our TMB products superior stop stability is achieved by a 0,3 M H2SO4 resulting in a yellow color read at 450 nm…

Top DNA polymerase is a novel thermostable DNA polymerase that is more processive than Taq DNA polymerase. In fact, the extension rate of Top DNA Polymerase is > 3 x that of Taq DNA Polymerase! Top DNA Polymerase can be used for a variety of PCR applications (including TA cloning) and is a robust enzyme for everyday PCR. It contains no proofreading or 5’-3’ Exonuclease activity.Features and Benefits• Fast: More than three tim…

Get more cDNA in less time with CycleScript Reverse Transcriptase. CycleScript is a versatile reverse transcriptase - applicable to both conventional Reverse Transcription and Cyclic Reverse Transcription (Cyclic RT, patent pending – for cDNA amplification). It features high activity across a wide range of temperatures from 37 to 55°C; therefore, reverse transcription is carried out like PCR. The Cyclic RT reaction is composed…

Moloney Murine Leukemia Virus (M-MLV) Reverse Transcriptase is an RNA-dependent DNA polymerase. This enzyme is able to use an RNA molecule as a template and synthesize a double-strand DNA. M-MLV Reverse Transcriptase is isolated from a E.coli strain containing a recombinant clone. It is ideal for use of first-strand synthesis cDNA from RNA molecules and for cDNA synthesis for Reverse Transcriptase PCR and qRT-PCR.