Shop All Enzymes and Inhibitors

Sensitive to Heat Inactivation


Buffer R (10X) Thermo Scientific™

Thermo Scientific 10X Buffer R ensures the optimum reaction conditions for restriction enzymes and is premixed with BSA for enhanced stability. Our Five Buffer System ensures the optimum reaction conditions for each restriction enzyme. This system consists of 10X B (blue), G (green), O (orange), R (red), and Tango (yellow) buffers. All restriction enzymes are supplied in color-coded tubes to indicate the recommended reaction buffer. The recommended buffer and/or the universal Tango buffer are supplied with each enzyme.

To ensure consistent enzyme performance, Thermo Scientific restriction enzyme buffers contain BSA, which enhances the stability of many enzymes and binds contaminants that may be present in DNA preparations. Multiple freeze-thaw cycles of the buffers will not cause BSA precipitation.

Thermo Scientific restriction enzymes exhibit 100% of their certified activity in the recommended buffer. However, some enzymes require additives to achieve 100% activity. For example, AjuI, AlfI, BdaI, BplI, BseMII, FaqI, Eco57I, Eco57MI, Hin4I, and TsoI require S-adenosylmethionine, which is supplied with the enzyme, while AarI and BveI require an oligonucleotide (also supplied with the enzyme). Esp3I requires DTT.

Micrococcal Nuclease (300 U/µL) Thermo Scientific™

Thermo Scientific Micrococcal Nuclease (S7 Nuclease) is an endo-exonuclease that digests single-stranded and double-stranded DNA and RNA.
Micrococcal Nuclease (S7 Nuclease) is a relatively nonspecific endo-exonuclease that digests single-stranded and double-stranded nucleic acids, but is more active on single-stranded substrates. Cleavage of DNA or RNA occurs preferentially at AT or AU-rich regions, yielding mononucleotides and oligonucleotides with terminal 3'-phosphates. The enzyme's activity is strictly dependent on Ca2+.
Applications

• Hydrolysis of nucleic acids in crude cell-free extracts
• Sequencing of RNA (see​ Reference 2)
• Studies of chromatin structure
• A model for protein folding and for structure-function studies

Exonuclease III (200 U/µL) Thermo Scientific™

Thermo Scientific Exonuclease III (ExoIII) exhibits four catalytic activities. The 3'→5' exodeoxyribonuclease activity of ExoIII is specific for double-stranded DNA. ExoIII degrades dsDNA from blunt ends, 5'-overhangs or nicks, releases 5'-mononucleotides from the 3'-ends of DNA strands and produces stretches of single-stranded DNA. It is not active on 3'-overhang ends of DNA that are at least four-bases long and do not carry a 3'-terminal C-residue on single-stranded DNA, or on phosphorothioate-linked nucleotides.

ExoIII 3'-phosphatase activity removes the 3'-terminal phosphate, generating a 3'-OH group. ExoIII Rnase H activity exonucleolytically degrades the RNA strand in RNA-DNA hybrids. ExoIII apurinic/apyrimidinic-endonuclease activity cleaves phosphodiester bonds at apurinic or apyrimidinic sites to produce 5'-termini that are base-free deoxyribose 5'-phosphate residues.

Highlights

• Active in restriction enzyme buffers

Applications

• Creation of unidirectional deletions in DNA fragments in conjunction with S1 Nuclease
• Generation of a single-stranded template for dideoxy-sequencing of DNA
• Site-directed mutagenesis
• Cloning of PCR products
• Preparation of strand-specific probes

Note

The rate of DNA digestion by ExoIII depends upon temperature, salt concentration, and the molar ratio of DNA to enzyme in the reaction mixture . Optimal reaction conditions should be determined experimentally.

RNase H (5 U/µL) Thermo Scientific™

Thermo Scientific Ribonuclease H (RNase H) specifically degrades the RNA strand in RNA-DNA hybrids. It does not hydrolyze the phosphodiester bonds within single-stranded and double-stranded DNA and RNA.

Applications

• Removal of mRNA prior to synthesis of second strand cDNA
RT-PCR and qRT-PCR: removal of RNA after first strand cDNA synthesis
• Removal of the poly(A) sequences of mRNA after hybridization with oligo(dT)
• Site-specific cleavage of RNA
• Studies of in vitro polyadenylation reaction products

PdmI (XmnI) (10 U/µL) Thermo Scientific™

5'  G  A  A  N  N ↓N  N  T  T  C   3' 
3'  C  T  T  N  N ↑N  N  A  A  G   5' 

Thermo Scientific PdmI (XmnI) restriction enzyme recognizes GAANN^NNTTC sites and cuts best at 37°C in Tango buffer (isoschizomers: Asp700I, MroXI, XmnI). See Reaction Conditions for Restriction Enzymes for a table of enzyme activity, conditions for double digestion, and heat inactivation for this and other restriction enzymes. Note: Also available as a FastDigest enzyme for rapid DNA digestion.

Thermo Scientific conventional restriction endonucleases are a large collection of high quality restriction enzymes, optimized to work in one of the buffers of the Five Buffer System. In addition, the universal Tango buffer is provided for convenience in double digestions. All of the enzymes exhibit 100% activity in the recommended buffer and reaction conditions. To ensure consistent performance, Thermo Scientific restriction enzyme reaction buffers contain premixed BSA, which enhances the stability of many enzymes and binds contaminants that may be present in DNA preparations.

Features

• Superior quality—stringent quality control and industry leading manufacturing process
• Convenient color-coded Five Buffer System
• Includes universal Tango buffer for double-digestions
• BSA premixed in reaction buffers
• Wide selection of restriction endonuclease specificities

Applications

• Molecular cloning
• Restriction site mapping
• Genotyping
• Southern blotting
• Restriction fragment length polymorphism (RFLP)
• SNP

Note: For methylation sensitivity, refer to product specifications.

FastDigest Bpu1102I Thermo Scientific™

5'  G  C ↓T  N  A  G  C   3' 
3'  C  G  A  N  T ↑C  G   5' 

Thermo Scientific FastDigest Bpu1102I restriction enzyme recognizes GC^TNAGC site and cuts best at 37°C in 5–15 minutes using universal FastDigest Buffer. Isoschizomers: BlpI, Bsp1720I, CelII.

Thermo Scientific FastDigest Bpu1102I is one of an advanced line of fast restriction enzymes that are all 100% active in the universal FastDigest and FastDigest Green reaction buffers.

The universal buffer allows rapid single-, double-, or multiple DNA digestion within 5–15 minutes eliminating any need for buffer change or subsequent DNA clean-up steps. See Reaction Conditions for FastDigest Enzymes for a table of enzyme activity, heat inactivation and incubation times for this and other FastDigest restriction enzymes. DNA modifying enzymes, such as Klenow Fragment, T4 DNA Ligase, alkaline phosphatases and T4 DNA Polymerase all have 100% activity in FastDigest Buffer. Therefore, enzymes for downstream applications can be directly added to the FastDigest reaction mix.

For additional convenience FastDigest Green Buffer includes a density reagent and two tracking dyes for direct loading of digestion reaction products on gels.

Short incubation times and optimal composition of the universal FastDigest Buffer eliminate star activity effects.

Features

• 100% activity of all FastDigest enzymes in the universal buffer
• 100% buffer compatibility with downstream applications
• Complete digestion in 5–15 minutes
• Direct loading on gels
• No star activity
• 176 FastDigest enzymes available

Applications

• Molecular cloning
• Restriction site mapping
• Genotyping
• Southern Blot
• Restriction fragment length polymorphism (RFLP)
• SNP analysis

Note: The FastDigest Green Buffer offers the same high performance in DNA digestion and downstream applications as the colorless FastDigest Buffer. For applications that require product analysis by fluorescence excitation (e.g. concentration measurements in UV light) the colorless FastDigest Buffer is recommended.

For methylation sensitivity, refer to product specifications.

MbiI (BsrBI) (10 U/µL) Thermo Scientific™

5'  C  C  G ↓C  T  C   3' 
3'  G  G  C ↑G  A  G   5' 

Thermo Scientific MbiI (BsrBI) restriction enzyme recognizes CCGCTC(-3/-3)^ sites and cuts best at 37°C in Tango buffer (isoschizomers: AccBSI, BsrBI). See Reaction Conditions for Restriction Enzymes for a table of enzyme activity, conditions for double digestion, and heat inactivation for this and other restriction enzymes. Note: Also available as a FastDigest enzyme for rapid DNA digestion.

Thermo Scientific conventional restriction endonucleases are a large collection of high quality restriction enzymes, optimized to work in one of the buffers of the Five Buffer System. In addition, the universal Tango buffer is provided for convenience in double digestions. All of the enzymes exhibit 100% activity in the recommended buffer and reaction conditions. To ensure consistent performance, Thermo Scientific restriction enzyme reaction buffers contain premixed BSA, which enhances the stability of many enzymes and binds contaminants that may be present in DNA preparations.

Features

• Superior quality—stringent quality control and industry leading manufacturing process
• Convenient color-coded Five Buffer System
• Includes universal Tango buffer for double-digestions
• BSA premixed in reaction buffers
• Wide selection of restriction endonuclease specificities

Applications

• Molecular cloning
• Restriction site mapping
• Genotyping
• Southern blotting
• Restriction fragment length polymorphism (RFLP)
• SNP

Note: For methylation sensitivity, refer to product specifications.

RNase I (10 U/µL) Thermo Scientific™

Thermo Scientific Ribonuclease I (RNase I) is an endoribonuclease that preferentially hydrolyzes single-stranded RNA to nucleoside 3'-monophosphates via nucleoside 2', 3'-cyclic monophosphate intermediates.

The enzyme does not require any metal ions for activity.

Highlights

• Stable and active under a wide variety of reaction conditions
• Can be heat inactivated in 30 minutes at 100°C

Applications

• Removal of RNA from DNA solutions
• Removal of RNA from recombinant protein preparations
• Ribonuclease protection assays

Notes

Mammalian ribonuclease inhibitors have no effect on RNase I. RNase I binds to DNA, but does not degrade it. RNase I amino acid sequence is typical for the RNase T2 family. Non-ionic detergents (e.g., Triton X-100) do not inhibit RNase I, and may even slightly stimulate its activity and stabilize it against heat inactivation. Triton X-100 or BSA (at 0.1 mg/mL) may prevent RNase I from sticking to glass vessels when working with dilute solutions. Polyamines stimulate the activity of RNase I.

PsuI (BstYI) (10 U/µL) Thermo Scientific™

5'  R ↓G  A  T  C  Y   3' 
3'  Y  C  T  A  G ↑R   5' 

Thermo Scientific PsuI (BstYI) restriction enzyme recognizes R^GATCY sites and cuts best at 37°C in B buffer (isoschizomers: BstX2I, BstYI, MflI, XhoII). See Reaction Conditions for Restriction Enzymes for a table of enzyme activity, conditions for double digestion, and heat inactivation for this and other restriction enzymes. Note: Also available as a FastDigest enzyme for rapid DNA digestion.

Thermo Scientific conventional restriction endonucleases are a large collection of high quality restriction enzymes, optimized to work in one of the buffers of the Five Buffer System. In addition, the universal Tango buffer is provided for convenience in double digestions. All of the enzymes exhibit 100% activity in the recommended buffer and reaction conditions. To ensure consistent performance, Thermo Scientific restriction enzyme reaction buffers contain premixed BSA, which enhances the stability of many enzymes and binds contaminants that may be present in DNA preparations.

Features

• Superior quality—stringent quality control and industry leading manufacturing process
• Convenient color-coded Five Buffer System
• Includes universal Tango buffer for double-digestions
• BSA premixed in reaction buffers
• Wide selection of restriction endonuclease specificities

Applications

• Molecular cloning
• Restriction site mapping
• Genotyping
• Southern blotting
• Restriction fragment length polymorphism (RFLP)
• SNP

Note: For methylation sensitivity, refer to product specifications.

FastDigest Bsp119I Thermo Scientific™

5'  T  T ↓C  G  A  A   3' 
3'  A  A  G  C ↑T  T   5' 

Thermo Scientific FastDigest Bsp119I restriction enzyme recognizes TT^CGAA site and cuts best at 37°C in 5–15 minutes using universal FastDigest Buffer. Isoschizomers: AsuII, Bpu14I, BspT104I, BstBI, Csp45I, NspV, SfuI.

Thermo Scientific FastDigest Bsp119I is one of an advanced line of fast restriction enzymes that are all 100% active in the universal FastDigest and FastDigest Green reaction buffers.

The universal buffer allows rapid single-, double-, or multiple DNA digestion within 5–15 minutes eliminating any need for buffer change or subsequent DNA clean-up steps. See Reaction Conditions for FastDigest Enzymes for a table of enzyme activity, heat inactivation and incubation times for this and other FastDigest restriction enzymes. DNA modifying enzymes, such as Klenow Fragment, T4 DNA Ligase, alkaline phosphatases and T4 DNA Polymerase all have 100% activity in FastDigest Buffer. Therefore, enzymes for downstream applications can be directly added to the FastDigest reaction mix.

For additional convenience FastDigest Green Buffer includes a density reagent and two tracking dyes for direct loading of digestion reaction products on gels.

Short incubation times and optimal composition of the universal FastDigest Buffer eliminate star activity effects.

Features

• 100% activity of all FastDigest enzymes in the universal buffer
• 100% buffer compatibility with downstream applications
• Complete digestion in 5–15 minutes
• Direct loading on gels
• No star activity
• 176 FastDigest enzymes available

Applications

• Molecular cloning
• Restriction site mapping
• Genotyping
• Southern Blot
• Restriction fragment length polymorphism (RFLP)
• SNP analysis

The FastDigest Green Buffer offers the same high performance in DNA digestion and downstream applications as the colorless FastDigest Buffer. For applications that require product analysis by fluorescence excitation (e.g. concentration measurements in UV light) the colorless FastDigest Buffer is recommended.

For methylation sensitivity, refer to product specifications.

Anza™ 30 Bsu15I Invitrogen™

5'  A  T ↓C  G  A  T   3' 
3'  T  A  G  C ↑T  A   5' 

Invitrogen™ Anza™ 30 Bsu15I is a restriction enzyme that cuts DNA at this recognition site: AT^CGAT, completely digesting the DNA in 15 minutes at 37°C. Isoschizomers include: Bsa29I, BseCI, BshVI, BspDI, BsuTUI, ClaI.

For superior convenience, a single buffer and protocol are used with all Anza™ restriction enzymes. The single Anza buffer allows multiple restriction enzymes to be used simultaneously in one reaction. This helps eliminate the need for sequential digests and the DNA clean-up necessary when changing buffers. Additionally, the Anza buffer and restriction enzymes have been designed for flexibility in digestion times. Digestions of up to 16 hours can be carried out without star activity.

Convenient—all Anza enzymes are 100% functional in the single Anza buffer
Fast—complete digestion in 15 minutes
Flexible—overnight digestion without star activity
Simple—a single digestion protocol for all DNA types
Complete system—incorporates Anza DNA Modifying Enzymes for a complete cloning experience

Anza DNA Modifying Enzymes include the Anza T4 DNA Ligase Master Mix, Anza Alkaline Phosphatase Kit, Anza T4 PNK Kit, Anza DNA Blunt End Kit, and Anza DNA End Repair Kit. Use these enzymes for a complete cloning workflow.

Anza Red Buffer, which contains a density gradient and tracking dyes, is supplied for added convenience. Digestion reactions are as efficient in the Anza Red Buffer as in the Anza Buffer. Use of the Anza Red Buffer helps reduce pipetting steps when preparing multiple digestion reactions and a subsequent step includes agarose gel electrophoresis. For applications that require product analysis by fluorescence excitation, the colorless Anza Buffer without the tracking dyes is recommended.

EcoRI Buffer (10X) Thermo Scientific™

Thermo Scientific 10X Buffer EcoRI is the optimal buffer recommended for use with EcoRI restriction enzyme and is premixed with BSA for enhanced stability.

To ensure consistent enzyme performance, Thermo Scientific restriction enzyme buffers contain BSA, which enhances the stability of many enzymes and binds contaminants that may be present in DNA preparations. Multiple freeze-thaw cycles of the buffers will not cause BSA precipitation.

Thermo Scientific restriction enzymes exhibit 100% of their certified activity in the recommended buffer.

FastDigest CsiI Thermo Scientific™

5'  A ↓C  C  W  G  G  T   3' 
3'  T  G  G  W  C  C ↑A   5' 

Thermo Scientific FastDigest CsiI restriction enzyme recognizes A^CCWGGT site and cuts best at 37°C in 5–15 minutes using universal FastDigest Buffer. Isoschizomers: SexAI, MabI.

Thermo Scientific FastDigest CsiI is one of an advanced line of fast restriction enzymes that are all 100% active in the universal FastDigest and FastDigest Green reaction buffers.

The universal buffer allows rapid single-, double-, or multiple DNA digestion within 5–15 minutes eliminating any need for buffer change or subsequent DNA clean-up steps. See Reaction Conditions for FastDigest Enzymes for a table of enzyme activity, heat inactivation and incubation times for this and other FastDigest restriction enzymes. DNA modifying enzymes, such as Klenow Fragment, T4 DNA Ligase, alkaline phosphatases and T4 DNA Polymerase all have 100% activity in FastDigest Buffer. Therefore, enzymes for downstream applications can be directly added to the FastDigest reaction mix.

For additional convenience FastDigest Green Buffer includes a density reagent and two tracking dyes for direct loading of digestion reaction products on gels.

Short incubation times and optimal composition of the universal FastDigest Buffer eliminate star activity effects.

Features

• 100% activity of all FastDigest enzymes in the universal buffer
• 100% buffer compatibility with downstream applications
• Complete digestion in 5–15 minutes
• Direct loading on gels
• No star activity
• 176 FastDigest enzymes available

Applications

• Molecular cloning
• Restriction site mapping
• Genotyping
• Southern Blot
• Restriction fragment length polymorphism (RFLP)
• SNP analysis

Note: The FastDigest Green Buffer offers the same high performance in DNA digestion and downstream applications as the colorless FastDigest Buffer. For applications that require product analysis by fluorescence excitation (e.g. concentration measurements in UV light) the colorless FastDigest Buffer is recommended.

For methylation sensitivity, refer to product specifications.

FastDigest MboI Thermo Scientific™

5'  G  A  T  C   3'
3'   C  T  A  G ↑ 5'

Thermo Scientific FastDigest MboI restriction enzyme recognizes ^GATC site and cuts best at 37°C in 5–15 minutes using universal FastDigest Buffer. Isoschizomers: BfuCI, BssMI, BstKTI, BstMBI, DpnII, Kzo9I, NdeII, Sau3AIm, Bsp143I.

Thermo Scientific FastDigest MboI is one of an advanced line of fast restriction enzymes that are all 100% active in the universal FastDigest and FastDigest Green reaction buffers.

The universal buffer allows rapid single-, double-, or multiple DNA digestion within 5–15 minutes eliminating any need for buffer change or subsequent DNA clean-up steps. See Reaction Conditions for FastDigest Enzymes for a table of enzyme activity, heat inactivation and incubation times for this and other FastDigest restriction enzymes. DNA modifying enzymes, such as Klenow Fragment, T4 DNA Ligase, alkaline phosphatases and T4 DNA Polymerase all have 100% activity in FastDigest Buffer. Therefore, enzymes for downstream applications can be directly added to the FastDigest reaction mix.

For additional convenience FastDigest Green Buffer includes a density reagent and two tracking dyes for direct loading of digestion reaction products on gels.

Short incubation times and optimal composition of the universal FastDigest Buffer eliminate star activity effects.

Features

• 100% activity of all FastDigest enzymes in the universal buffer
• 100% buffer compatibility with downstream applications
• Complete digestion in 5–15 minutes
• Direct loading on gels
• No star activity
• 176 FastDigest enzymes available

Applications

• Molecular cloning
• Restriction site mapping
• Genotyping
• Southern Blot
• Restriction fragment length polymorphism (RFLP)
• SNP analysis

Note: The FastDigest Green Buffer offers the same high performance in DNA digestion and downstream applications as the colorless FastDigest Buffer. For applications that require product analysis by fluorescence excitation (e.g. concentration measurements in UV light) the colorless FastDigest Buffer is recommended.

For methylation sensitivity, refer to product specifications.

Anza™ 53 AanI Invitrogen™

5'  T  T  A ↓T  A  A   3' 
3'  A  A  T ↑A  T  T   5' 

Invitrogen™ Anza™ 53 AanI is a restriction enzyme that cuts DNA at this recognition site: TTA^TAA, completely digesting the DNA in 15 minutes at 37°C. Isoschizomers include: PsiI.

For superior convenience, a single buffer and protocol are used with all Anza™ restriction enzymes. The single Anza buffer allows multiple restriction enzymes to be used simultaneously in one reaction. This helps eliminate the need for sequential digests and the DNA clean-up necessary when changing buffers. Additionally, the Anza buffer and restriction enzymes have been designed for flexibility in digestion times. Digestions of up to 16 hours can be carried out without star activity.

Convenient—all Anza enzymes are 100% functional in the single Anza buffer
Fast—complete digestion in 15 minutes
Flexible—overnight digestion without star activity
Simple—a single digestion protocol for all DNA types
Complete system—incorporates Anza DNA Modifying Enzymes for a complete cloning experience

Anza DNA Modifying Enzymes include the Anza T4 DNA Ligase Master Mix, Anza Alkaline Phosphatase Kit, Anza T4 PNK Kit, Anza DNA Blunt End Kit, and Anza DNA End Repair Kit. Use these enzymes for a complete cloning workflow.

Anza Red Buffer, which contains a density gradient and tracking dyes, is supplied for added convenience. Digestion reactions are as efficient in the Anza Red Buffer as in the Anza Buffer. Use of the Anza Red Buffer helps reduce pipetting steps when preparing multiple digestion reactions and a subsequent step includes agarose gel electrophoresis. For applications that require product analysis by fluorescence excitation, the colorless Anza Buffer without the tracking dyes is recommended.
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