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  1. Plasmid Cloning by PCR

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    ...into a recipient plasmid. Designing primers for PCR based cloning     The basic PCR primers for molecular...TGCTTAGCGGCCGCTCAGTACTTCGAGATATGCCA-3’. Preparing the PCR product for cloning Run the PCR reaction Run PCR to amplify your insert DNA... to clone from genomic DNA, a cDNA library, or by RT-PCR. Isolate the PCR product Isolate your PCR product...recipient plasmid (usually in the Multiple Cloning Site (MCS)), but do not cut elsewhere on the plasmid Bonus... rest of the PCR reaction using a kit, such as the QIAquick PCR Purification Kit. The PCR product is now...Learn About Other Cloning Techniques Catch Up on All Things Plasmid with Our Plasmids 101 Series Get Tips...In its simplest form, PCR based cloning is about making a copy of a piece of DNA and at the same time...
  2. FastCloning: A Newer, Simpler Cloning Technique

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    ... Blog Plasmid Cloning by PCR Perform Site Directed Mutagenesis by PCR Catch up on Your Plasmid Background...these include, TA cloning, ligation independent cloning, TOPO cloning, one step cloning, and overlap extension...Standard Restriction Cloning and Fast Cloning Requirement Restriction Cloning Fast Cloning Choose Restriction...restriction cloning is still routinely performed by many labs, a variety of other cloning techniques with...extension PCR. Although each type of cloning has its advantages, most scientists still encounter several...the multi-cloning site, and the reverse primer is located in the 5’ end of the multi-cloning site. The...ve confirmed that the PCR was successful, mix together the vector and insert PCR products with DpnI, and...
  3. Plasmids 101: Colony PCR

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    ...colony PCR.   Designing colony PCR primers The first and perhaps most important step to colony PCR is designing...   PCR set-up Setting up colony PCR reactions is nearly identical to preparing a standard PCR reaction... few positive clones, the last step is to mini-prep these clones and submit the plasmids for Sanger sequencing... between the plasmid and insert DNA. Colony PCR will greatly reduce the number of clones you’ll need to...colony PCR can accomplish the same thing in less time and for less money. The key steps to colony PCR are...kind of test, with a positive clone amplifying a product and a negative clone resulting in no product. Additionally...insert site. A positive clone will produce a larger size product then a negative clone without the insert....
  4. Plasmids 101: TOPO Cloning

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    ...Topoisomerase based cloning (TOPO cloning) is a DNA cloning method that does not use restriction enzymes...TOPO-TA) cloning; however, the TOPO cloning technique has also be adapted for blunt end cloning. So how...using your favorite PCR protocol.  2. Set Up TOPO Cloning Reaction: Mix together the PCR product and TOPO...How to Verify Your Plasmid Resources on Addgene.org Find More Plasmid Cloning Protocols Catch Up On ...does TOPO cloning work? As illustrated in the Figure below, the “A” overhang on the blue PCR product insert...positive clones. Once you introduce your 3’-end “A” overhang insert, the magic of TOPO cloning happens....break down the steps needed for TOPO cloning: 1. Create Your PCR Product: Design standard primers (no ...
  5. Simplify Cloning with in vivo Assembly

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    ... posts on plasmid cloning Resources on Addgene.org Read our protocols for plasmid cloning Find our molecular...to amplify by PCR, so we usually add DMSO (3%) and Betaine (1 M) to the PCR mix. When PCR is not possible...sequences. Multiple plasmids can be included in a single PCR, for example for subcloning genes from different...from the MRC Laboratory of Molecular Biology. Plasmid cloning is an essential part of any molecular biology...majority of current cloning techniques involve the assembly of a circular plasmid in vitro, before transforming... bacterial in vivo cloning is now able to come of age. The in vivo assembly cloning protocol In Vivo Assembly...matter if the DNA is PCR amplified, restriction digested or even a synthesized gene. PCR is the primary method...
  6. Plasmids 101: 5 factors to help you choose the right cloning method

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    ... Read other Plasmids 101 blog posts New to plasmids? Read our article on What is a Plasmid? Download the... the Plasmids 101 eBook Resources on Addgene.org0 Check out protocols for plasmid cloning Find vector... thing since CRISPR; you are ready to clone! But...how? Cloning is no longer limited to restriction enzymes...might consider Gibson cloning. In this technique, you first perform a round of PCR to generate DNA fragments...transform the PCR products into E. coli. Ligases within the E. coli then fuse together the PCR products via...over from the PCR process (the precise mechanism isn’t well understood). Finally, TOPO cloning is another...limited - what cloning approach should you use if the budget is particularly tight? Most cloning processes ...
  7. Plasmids 101: Sequence and Ligation Independent Cloning (SLIC)

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    ...If cloning methods had personalities, SLIC (sequence- and ligation-independent cloning) would be a true...starting point: Ligation-independent cloning Ligation-independent cloning (LIC) was first developed in the...traditional restriction enzyme cloning uses short sticky ends to insert genes into plasmid backbones, base pairing...strong enough to hold a plasmid together through transformation, so the cloned vector must be ligated....limited to specially designed plasmids. Sequence- and ligation-independent cloning: A SLIC makeover In 2007...hold the plasmid together, even if there are gaps or flaps remaining. This incomplete plasmid looks like...Schematic of SLIC. To start the SLIC cloning process, a gene of interest is PCR amplified to add 5′ and 3′ homology...
  8. Plasmids 101: Screening Strategies Used in Plasmid Cloning

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    ...should expect a PCR product if the plasmid contains the insert and no PCR product if the plasmid does not contain...’re cloning a plasmid, you’ll need a way to find the needle in the haystack: the one perfect clone that...correct clone. Additional resources on the Addgene blog Get all the plasmid basics in our Plasmids 101 ... to use positive and negative selection in plasmid cloning.  But oftentimes, a selection strategy is ...find the desired clone. Do your selection, then screen Why add a screen to your cloning strategy? A screen...once in the plasmid backbone and another enzyme that cuts within the insert. If the plasmid contains the...our restriction analysis blog post. Colony PCR Colony PCR can detect the presence or absence of DNA using...
  9. Troubleshooting Your Plasmid Cloning Experiment

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    ...Browse our Plasmids 101 blog posts Read blog posts on plasmid cloning Read about different plasmid elements...development scientist at Addgene. Cloning can be quite an arduous process. The PCR could fail to produce a product... the correct plasmid. There’s a lot that can go wrong! With all the steps in the cloning process, there...troubleshoot the cloning experiment. Here are some tips that will help you with your cloning project, and ...can assemble the different parts of a plasmid based on the cloning strategy you followed. While most of..., and try a different cloning strategy. Once you've identified potential clones after the screening, sequence...due to a PCR mistake or a mistake by the DNA analysis software. Now that you've read our plasmid troubleshooting...
  10. Site Directed Mutagenesis by PCR

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    ...mutagenesis of Plasmids. A) Generation of mutagenized plasmids. PCR primers (green) amplify the plasmid template...with the nuclease-resistant nicked plasmid (the PCR product). Plasmids are isolated from the resulting colonies...DpnI) to eliminate the parent plasmid from the PCR products, the plasmid template should be isolated from...Blog Brush up on Your Cloning Techniques Learn More about Plasmids in Our Plasmids 101 Series Use CRISPR...can be introduced to plasmids using primers (with the desired mutation) in a PCR protocol that amplifies... mutagenized plasmid. Although it is commonly believed that the final products of the PCR reaction are...the final circular plasmid product pictured here. B) Screening of recovered plasmids for the mutation of...
  11. Plasmids 101: Gateway Cloning

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    ...of an attB-PCR product or plasmid with an attP donor vector. In this case, we would use PCR to add attB...attL-entry clone to create the expression clone.    Figure 6: Generating an expression clone. The reaction...speeding up the cloning of the attB-PCR products directly into destination vectors. The cloning process is ...recombination Used to generate entry clones by TOPO cloning or by Restriction Cloning Destination vector attR ...with the entry clone to generate an expression clone   Ready to try out Gateway cloning?  Many scientists...to find Gateway plasmids for your organisms of interest: Find Gateway cloning plasmids here! References...Verify Your Clones Resources on Addgene.org Find Plasmid Cloning Protocols Watch Our Diagnostic Restriction...
  12. REPLACR Mutagenesis: Replacing In Vitro Recombination Methods

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    ...Other Plasmid Cloning Techniques like SLIC and Golden Gate Cloning Learn How to Verify Your Plasmid Read...recommended for plasmids up to 25 kb, most cloners should be fine, especially using plasmids in the 10-12...REPLACR (Recombineering of Ends of Linearized Plasmids After PCR). Current site directed mutagenesis methods...desired mutation, then use those to PCR amplify the template plasmid. The parental, nonmutated DNA is digested...together multiple PCR products using sequence homology is also common. Overlap extension PCR is used to splice...treated with DpnI to digest away the template plasmid, these PCR products are directly transformed into bacteria...temperature-sensitive plasmid. Homologous recombination then joins the linear PCR products into stable ...
  13. Polymerase Chain Reaction Overview and Applications

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    ... of PCR   Type of PCR Goal of the PCR method Uses of PCR method End point PCR or just PCR Amplify...Droplet Digital PCR for AAV Quantification Plasmid cloning by PCR  Plasmids 101: Colony PCR Site Directed...as molecular cloning or molecular diagnostics.       Steps of PCR The beauty of PCR is that it can... our PCR protocol page, protocol video and reference on how to design PCR primers.  Types of PCR Since...applications. These PCR methods all use the same basic PCR set up and steps but differ in how the PCR products are...analyzed.   End point PCR End point PCR, as the name implies, analyzes the end product of PCR temperature cycling...post “Droplet Digital PCR for AAV Quantification.”   Multiplex PCR Multiplex PCR, as the name implies,...
  14. Plasmids 101: Gibson Assembly and Other Long-Homology Based Cloning Methods

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    ...ways to clone DNA fragments which have provided appealing alternatives to restriction enzyme cloning. These...Sequence and Ligation Independent Cloning (SLIC) in a previous Plasmids 101 post. Although SLIC may be more...circular polymerase extension cloning) and SLiCE (Seamless Ligation Cloning Extract) to name two more. Likewise... Assembly (NEB) Cold Fusion Cloning (System Biosciences) In-fusion Cloning (Clontech) Although these ...smaller fragments. Know your cloning methods There are two other common cloning methods that are easy to ...your insert. Gateway cloning utilizes λ integrase to catalyze directional cloning of DNA parts that are...different ways to clone these days. Gibson and the other long-homology based cloning methods are useful...
  15. Pushing the Limits of DNA Assembly

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    ...Gateway Cloning Gibson Assembly and Other Long-Homology Based Cloning Methods Screen Plasmids by Colony... scarless plasmid inserts.  Want to Learn More about DNA Assembly? Check Out Our Plasmids 101 eBook!...any well-executed cloning endeavor, NEBuilder requires upfront planning. This cloning methodology requires...as easy as obtaining a plasmid with the gene of interest (search Addgene plasmids by gene here), designing..., performing PCR to generate the mutation and linearizing your vector (preferably by PCR) for DNA assembly...Biolabs. What is DNA assembly? In the context of cloning, DNA assembly refers to a method of physically ...fragments (containing regions of homology) cut from plasmids via restriction enzyme digestion, and used directly...
  16. Building and Validating Recombinant Antibodies: A Case Study

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    ...sequences. Fusion PCR was performed to create an amplicon that  was cloned into a plasmid backbone for expression...important collection.  Creating the Plasmids To begin constructing the plasmids for expression of mAbs, the Trimmer...restriction digest and colony PCR.   Fig. 1: (A) Schematic of cloning, expression and validation ...the correct clones, it was determined that for some constructs more than 90% of the colony PCR validated...By performing a BciVI digest of the PCR products prior to cloning, which in most cases left the functional...expression plasmids were DNA sequenced to determine the VH and VL sequence. These plasmids have been deposited...scientific community with the plasmid sequences available from each plasmid webpage. Importantly, the methods...
  17. Addgene’s Newest Way to Speed Your Research: The Cloning Grade DNA Service

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    ... after ordering a plasmid you didn't have to grow the bacteria and prep the plasmid before you begin your... your cloning experiment? What if after receiving the plasmid from Addgene you could directly start your...and discovery.” Here are the details. Plasmids offered as cloning grade DNA As we begin testing out this...with 210 plasmids from the collection. You can find the full list here. Most of these plasmids are empty...and suitable for molecular cloning. Plus, we decided to include 10 plasmids that can be directly used ... scientific communities using plasmid tools. Details about the cloning grade DNA beta project We will... molecular biology experiments such as cloning, digestions, PCR etc. and/or directly long term storage...
  18. CRISPR 101: Validating Your Genome Edit

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    ...screening by PCR may be the way to go. Design a PCR to flank your desired edit site and run the PCR product...in the input population or clone.   How to perform a TIDE First, use PCR to amplify the target region...individual clones from that population. You can additionally calculate the minimum number of clones you would...interest. Thus, to find a null clone, you should screen, at the very least, 4 clones. Did you use a dual guide...visualized by running your PCR on a gel. It’s still paramount that you sequence clones to verify that the deletions... success? Before you start analyzing individual clones, it’s wise to quickly assess whether a significant...verify that you won’t need to screen hundreds of clones looking for your edit of interest. For all of the...
  19. Plasmids 101: Golden Gate Cloning

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    ...Advantages of Golden Gate cloning Golden Gate cloning is one of the easiest cloning methods in terms of hands-on...Addgene’s plasmids are used with a wide variety of restriction enzyme-based cloning methods. Each method... and easy-to-use system to your cloning efforts. Golden Gate cloning technology relies on Type IIS restriction...construct, allowing for precise, scarless cloning. The cloning scheme is as follows: the gene of interest... may be present in the original plasmid (Option 1) or added using PCR-based amplification (Option 2). ...number of potential clones. Golden Gate assembly has a few advantages over other cloning methods. Exonuclease-based... leveraged the power of Golden Gate cloning into a modular cloning strategy. Sometimes referred to as ...
  20. Plasmids 101: Methylation and Restriction Enzymes

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    ...desired mutation into your plasmid of interest by PCR generates mutated plasmids with no methylation (there...in bacteria for purposes other than cloning or confirming plasmids. It turns out that restriction enzymes...are no methyltransferases in the PCR reaction). The template plasmid, on the other hand, should be derived...adenines in any GATC sequences found in the plasmid. When the PCR products are digested with DpnI, only the...Mutagenesis to Mutate Your Plasmids Resources on Addgene.org Check Out Our Plasmid Protocols Boost Your Molecular...considered why DpnI will degrade your template DNA from a PCR reaction but not the newly synthesized product from...adenine in AACNNNNNNGTGC or GCACNNNNNNGTT Impact on cloning and digests Although not all prokaryotic DNA is...
Showing: 1 - 20 of 120 results