Product Class: Restriction Endonuclease

PstI
neb31 cloned at NEB recombinant time saver dil_C 37 80 Heat

PstI has been reformulated with Recombinant Albumin (rAlbumin) beginning with Lot #10237495. Learn more.

We are excited to announce that all reaction buffers are now BSA-free. NEB began switching our BSA-containing reaction buffers in April 2021 to buffers containing Recombinant Albumin (rAlbumin) for restriction enzymes and some DNA modifying enzymes. Find more details at www.neb.com/BSA-free.

NEB restriction endonuclease that recognizes the sequence C_TGCA^G
Isoschizomers | Single Letter Code

Product Introduction

Catalog # Size Concentration
R0140S 10000.0 units 20000 units/ml
R0140T 10000.0 units 100000 units/ml
R0140L 50000.0 units 20000 units/ml
R0140M 50000.0 units 100000 units/ml

Featured Videos

View Video Library
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    NEB® TV Ep. 15 – Applications of Restriction Enzymes

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    Restriction Enzyme Digest Protocol: Cutting Close to DNA End

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    Restriction Enzyme Digestion Problem: DNA Smear on Agarose Gel

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    Why is My Restriction Enzyme Not Cutting DNA?

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    Restriction Enzyme Digest Problem: Too Many DNA Bands

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    Double Digestion with NEBcloner

Product Information

Description

PstI has a High Fidelity version PstI-HF® (NEB #R3140).

High Fidelity (HF) Restriction Enzymes have 100% activity in rCutSmart Buffer; single-buffer simplicity means more straightforward and streamlined sample processing. HF enzymes also exhibit dramatically reduced star activity. HF enzymes are all Time-Saver qualified and can therefore cut substrate DNA in 5-15 minutes with the flexibility to digest overnight without degradation to DNA. Engineered with performance in mind, HF restriction enzymes are fully active under a broader range of conditions, minimizing off-target products, while offering flexibility in experimental design.

Product Source

A E. coli strain that carries the PstI gene from Providencia stuartii 164 (ATCC 49762).
This product is related to the following categories:
Restriction Endonucleases P R Products,
Time-Saver Qualified Restriction Enzymes Products,
This product can be used in the following applications:
BioBrick® Assembly,
Fast Cloning: Accelerate your cloning workflows with reagents from NEB

Reagents Supplied

Reagents Supplied

The following reagents are supplied with this product:

NEB # Component Name Component # Stored at (°C) Amount Concentration

Properties & Usage

Unit Definition

One unit is defined as the amount of PstI required to digest 1 µg of λ DNA in 1 hour at 37°C in a total reaction volume of 50 µl.

Reaction Conditions

1X NEBuffer™ r3.1
Incubate at 37°C

1X NEBuffer™ r3.1
100 mM NaCl
50 mM Tris-HCl
10 mM MgCl2
100 µg/ml Recombinant Albumin
(pH 7.9 @ 25°C)

Activity in NEBuffers

NEBuffer™ r1.1: 75%
NEBuffer™ r2.1: 75%
NEBuffer™ r3.1: 100%
rCutSmart™ Buffer: 50%

Diluent Compatibility

Storage Buffer

250 mM NaCl
10 mM Tris-HCl
1 mM DTT
0.1 mM EDTA
200 µg/ml Recombinant Albumin
50% Glycerol
0.15% Triton® X-100
pH 7.4 @ 25°C

Heat Inactivation

80°C for 20 minutes

Methylation Sensitivity

dam methylation: Not Sensitive
dcm methylation: Not Sensitive
CpG Methylation: Not Sensitive

Isoschizomers

BspMAI
PstI-HF

Product Notes

  1. May exhibit star activity in rCutSmart Buffer.
  2. Not sensitive to CpG, dcm, or dam methylation.

Protocols, Manuals & Usage

Protocols

  1. Optimizing Restriction Endonuclease Reactions
  2. Restriction Digest Protocol
  3. Double Digest Protocol with Standard Restriction Enzymes

Usage & Guidelines

Tools & Resources

Selection Charts

Web Tools

FAQs & Troubleshooting

FAQs

  1. What is the activity of PstI at 25°C?
  2. Is PstI used in special techniques?
  3. When is star activity a problem for PstI?
  4. What is the molecular weight of PstI?
  5. Is PstI blocked by methylation?
  6. Is PstI inhibited by dUTP incorporated at the site?
  7. Does spermidine increase activity?
  8. Are there specific surrounding sequences that produce slow or resistant sites?
  9. Do I have to set-up digests with Time-Saver™ qualified enzymes for 5-15 minutes? Can I digest longer?
  10. Which NEB restriction enzymes are supplied with Gel Loading Dye, Purple (6X)?
  11. Can you tell me more about the switch from BSA to Recombinant Albumin (rAlbumin) in NEBuffers?

Troubleshooting

Tech Tips

Blocked by some types of methylation often found in plant DNA.

Quality, Safety & Legal

Quality Assurance Statement

Quality Control tests are performed on each new lot of NEB product to meet the specifications designated for it. Specifications and individual lot data from the tests that are performed for this particular product can be found and downloaded on the Product Specification Sheet, Certificate of Analysis, data card or product manual. Further information regarding NEB product quality can be found here.

Specification Change Notifications

PstI has been reformulated with Recombinant Albumin (rAlbumin) beginning with Lot #10237495. All subsequent (higher number) lots will contain rAlbumin. For additional information, please visit at NEB Restriction Enzyme formulations with Recombinant Albumin (rAlbumin).

Specifications

The Specification sheet is a document that includes the storage temperature, shelf life and the specifications designated for the product. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]

Certificate Of Analysis

The Certificate of Analysis (COA) is a signed document that includes the storage temperature, expiration date and quality controls for an individual lot. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]_[Lot Number]

Safety DataSheets

The following is a list of Safety Data Sheet (SDS) that apply to this product to help you use it safely.

Legal and Disclaimers

Products and content are covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB). The use of trademark symbols does not necessarily indicate that the name is trademarked in the country where it is being read; it indicates where the content was originally developed. The use of this product may require the buyer to obtain additional third-party intellectual property rights for certain applications. For more information, please email busdev@neb.com.

This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.

New England Biolabs (NEB) is committed to practicing ethical science – we believe it is our job as researchers to ask the important questions that when answered will help preserve our quality of life and the world that we live in. However, this research should always be done in safe and ethical manner. Learn more.

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