SgeI (3 U/μL)

5' Cm5N N G N9↓ 3'3' G N N C N13↑ 5'SgeI cleaves DNA targets containing 5-methylcytosine on one or자세히 알아보기

카탈로그 번호	수량
ER2211	250 units

카탈로그 번호 ER2211

제품 가격(KRW)

250 units

대량 주문 또는 맞춤형 요청

5' C^m5 N N G N₉ ↓ 3'
3' G N N C N₁₃ ↑ 5'
SgeI cleaves DNA targets containing 5-methylcytosine on one or both DNA strands

Thermo Scientific SgeI restriction enzyme recognizes m5CNNG(9/13)^ sites and cuts best at 37°C in its own unique buffer. 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.

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: DNA methylated by Dcm or CpG methyltransferases will be a substrate for SgeI. Greater than 3-fold overdigestion with SgeI may result in incomplete cleavage. At least two copies of SgeI recognition sequence are required for an efficient cleavage. Amount of the enzyme required for complete digestion of methylated DNA depends on the number of SgeI recognition sites. DNA cleavage products generated by target site cleavage facilitate the nonspecific cleavage by SgeI. Therefore, optimization of the enzyme amount is recommended for DNA cleavage. pBR322 DNA isolated from E. coli dcm+ strain (#SD0041) can be used as a DNA cleavage efficiency control. SgeI cleaves all six dcm methylated targets on pBR322 DNA. For methylation sensitivity, refer to product specifications.

For Research Use Only. Not for use in diagnostic procedures.

함께 사용가능한 버퍼Unique Buffer (10X Buffer SgeI)

제품 유형Restriction Enzyme

수량250 units

농도3 U/μL

효소SgeI

메틸화 민감도Not Dcm Methylation-Sensitive, Not CpG Methylation-Sensitive

최적 반응 온도37°C

연구 카테고리Traditional Cloning

열 불활성화에 대한 민감성Yes

Type IIS RENo

Unit SizeEach

자주 묻는 질문(FAQ)

Can I double digest my DNA using a Thermo Scientific conventional restriction enzyme and a FastDigest restriction enzyme?

For optimal results with fast reaction and 100% buffer compatibility, we highly recommend using FastDigest restriction enzymes in double digestion. In certain cases however, it may be possible to perform double digestion using a mix of Thermo Scientific conventional and Fastdigest restriction enzymes. For specific recommendations, please contact our technical service with detailed information about the enzymes and DNA template you plan to use.

Why do you recommend only 2 µL of 10X Reaction Buffer when digesting unpurified PCR product in a 30 µL reaction?

We recommend only 2 µl 10X Buffer in digestion of unpurified PCR products in 30 ul since salts and ions from the PCR reaction would be carried over to the digestion reaction.

Find additional tips, troubleshooting help, and resources within our Restriction Enzyme Cloning Support Center.

What are key factors promoting star activity?

Star activty may be contributed by:

• Prolonged incubation
• High enzyme concentration
• High glycerol concentration (usually 5% or higher)
• Small reaction volume

Find additional tips, troubleshooting help, and resources within our Restriction Enzyme Cloning Support Center.

Unexpected DNA bands were observed on agarose gel electrophoresis after restriction digestion. What may have caused this?

Unexpected cleavage patterns may be caused by the following reasons:

• Star activity of the restriction enzyme: Make sure to follow the reaction recommendations as specified in the protocol. Star activity may be improved by changing several key factors such as decreasing the reaction time, increasing the reaction volume, and decreasing the enzyme amount.

• Partial or incomplete cleavage (incomplete restriction reaction): Efficiency of the enzyme can be improved by adding more enzyme, prolonging the reaction time, or purifying DNA samples to remove inhibitory contaminants.

• Contamination with non-specific endonucleases: Non-specific endonucleases may be introduced to the DNA sample and/or the enzyme from improper handling, pipetting, etc.

•Improper reaction setup: Mix the digestion reaction thoroughly.

Find additional tips, troubleshooting help, and resources within ourRestriction Enzyme Cloning Support Center.

What are possible reasons for incomplete/failed restriction digestion?

The main reason for DNA cleavage reaction failure is the presence of contaminating inhibitors in the template DNA (for example: phenol, chloroform, detergents, ethanol, excess salts, EDTA, etc.). The best way to troubleshoot is to perform control reactions:

1) negative control (experimental DNA in the reaction buffer without the restriction enzyme) to access degradation of DNA by contaminants in the DNA template and/or reaction buffer
2) positive control reaction I (digestion of highly pure control DNA with the restriction enzyme) to access reaction conditions and enzyme activity
3) positive control reaction II (highly pure control DNA + experimental DNA + Restriction Enzyme) to access possible issues with the experimental DNA.

In addition, please check for sensitivity of the restriction enzymes to template DNA methylation.

Find additional tips, troubleshooting help, and resources within our Restriction Enzyme Cloning Support Center.

View all SgeI (3 U/μL) FAQs