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  1. What the HEK?

    Type
    Blog Post
    ...transfect the ‘helper’ plasmids (viral packaging machinery) along with the viral plasmid containing the cargo...Netherlands. Transformation of HEK cells with adenovirus 5 DNA was postdoc Frank Graham’s 293rd experiment, hence...T-antigen. This allows them to replicate viral plasmids with the SV40 origin of replication. To generate...
  2. Meet the New Addgene Board Members!

    Type
    Blog Post
    ...over 100 requests for the plasmids and the lab eventually deposited these plasmids at Addgene. While deposits...she says. In 11th grade she heard a talk about Z DNA that inspired her to major in molecular biology in...The mission to share critical reagents such as plasmids and viral stocks for researchers around the world...
  3. Anatomy of a Plasmid Page at Addgene

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    Blog Post
    ... best bet is the Plasmid Map: We auto-generate a plasmid map based off of the plasmid sequence and feature...colleagues. Top of the plasmid page The ‘breadcrumb’ trail at the top of any plasmid page gives the hierarchy... to the individual plasmid page. The depositing lab page contains all the plasmids from the same lab while...contains all the plasmids deposited from the same publication. Next up, we have the plasmid name: This is...other plasmids with similar names in the collection, but you can use this name to find this plasmid from...A quicker way to find this plasmid through search is... The Addgene plasmid number: This is the unique... given to every plasmid in our catalog - if you know the catalog number of the plasmid you are searching...
  4. Plasmids 101: The protein expression toolbox

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    Blog Post
    ...region of a gene (cDNA) can be done by either plasmid or virus. A plasmid carrying your cDNA can be targeted...resources on the Addgene blog Plasmid 101: Inducible Promoters Plasmid 101: Repressible Promoters CRISPR...knock out. Looking for some permanent knock out plasmids? Check out our Cre vector and Murine LoxP vector...will inhibit transcription instead of introducing a DNA double strand break. Transient introduction of CRISPRi...of protein expression. Addgene has a dCas9 KRAB plasmid for transient knockouts!  Turn it on Turn it on...to integrate your choice cDNA. Both lentivirus and retrovirus can package cDNAs for genomic delivery and...to choose an appropriate promoter to express your cDNA, depending on the level of expression you would ...
  5. Overcoming the Challenges of Lentiviral Production

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    Blog Post
    ... multiple plasmids. Second generation packaging systems use 3 plasmids; an envelope plasmid that usually...encodes VSV-G, a packaging plasmid containing structural genes and a transfer plasmid carrying the transfer...Rev gene from the packaging plasmid and incorporating it into a fourth plasmid. In addition, the promoter..., they also require a fourth plasmid. The requirement for additional DNA can impact the transfection efficiency...and packaging plasmids in order to obtain the best titers. Requiring an additional plasmid for transfection...By dividing the viral elements across multiple plasmids, the risk of recombination and consequently, the...thereby affect the titer of the virus. Additional plasmids will also affect experiment optimization. Before...
  6. Open Enzyme Collection

    Type
    Collection
    ...assembly. Plasmids Explore the collection and order individual plasmids via the links below: DNA Ligases... ID Plasmid Gene/insert 165503 pOpen-HSlig4 DNA Ligase IV 165514 pOpen-9N7lig 9 Degrees North DNA Ligase...pOpen-Pfulig Pfu DNA Ligase 165535 pOpen-THEAQlig Taq DNA Ligase 165554 pOpen-T4gene30 T4-DNA Ligase 165564...pOpen-ECOligA E. coli DNA Ligase 165569 pOpen-Tthlig Tth DNA Ligase 165574 pOpen-HSlig3 DNA Ligase III Return... to top DNA Polymerases Addgene ID Plasmid Gene/insert 165500 pOpen-9N7polA 9 degrees N-7 DNA polymerase...Tli DNA polymerase (exo-) 165524 pOpen-T4gene43 T4 DNA Polymerase 165532 pOpen-ECOpolA E. coli DNA Polymerase...BioBricks Foundation Plasmids Drew Endy Lab Plasmids Jennifer Molloy Lab Plasmids Golden Gate cloning ...
  7. Viral Vectors 101: Virus Safety

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    Blog Post
    ...transfer plasmid), the envelope (Env) gene on a separate plasmid (envelope plasmid), and the polymerase ...different plasmids. For a retroviral system this looks like the genetic cargo in one plasmid (the transfer...Gag structural protein on yet a third plasmid (packaging plasmid). Viral production then proceeds by transfection... transfection of all three plasmids into a producer cell line, such as HEK-293T, production of viral particles... and Pol genes are not encoded in the transfer plasmid, the component that physically integrates into ... retroviral packaging components onto distinct plasmids for safety.    Viral cargo-specific safety...they physically deposit their cargo into the host’s DNA. These viruses also have a propensity to integrate...
  8. Plasmid Cloning by PCR (with Protocols)

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    Protocol
    ... you are amplifying from plasmid DNA (rather than from genomic DNA or a cDNA library), roughly 18-21bp...may also like... Restriction Digest of Plasmid DNA DNA Ligation Bacterial Transformation Summary PCR based...and NotI to ligate our cDNA into the recipient plasmid. Remember to insert your DNA in the correct orientation... Protocols Plasmid Cloning by PCR Plasmid Cloning by PCR You may... piece of DNA and at the same time adding restriction sites to the ends of that piece of DNA so that it...recipient plasmid (usually in the Multiple Cloning Site (MCS)), but do not cut elsewhere on the plasmid. Bonus.... Digest Your DNA Set up restriction digests for your PCR product and recipient plasmid. Because you lose...
  9. A Novice's Perspective on Neuroscience - SfN2017

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    Blog Post
    ... If there’s a plasmid or AAV tool that you can’t find, you can always suggest a plasmid to us, request...want to get into the field. Find Optogenetics Plasmids for Use in Neuroscience Research Neuroscience ...images of brain regions, or sequences of microbial DNA they all seem to require some mathematical know-how...400 who signed up for our newsletter and a free plasmid) were very excited about our new viral services...Service Find Retrograde AAV Browse Optogenetics Plasmids ...
  10. Fluorescent CRISPR Reporters: SRIRACCHA and GEmCherry2

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    Blog Post
    ...successful in your organism or cell type? You can use DNA sequencing or other molecular cloning techniques ...and to make the desired genome edit:  A donor plasmid that contains a puromycin resistance gene linked...the gRNA used when transfecting your cells.  A plasmid that contains Cas9. The Madison lab also created...in the reporter gene). A control RFP expression plasmid.  With this set up, all successfully transfected... and repaired via HDR using the supplied donor plasmid will express GFP. If there’s GFP expression, presumably...just your desired genomic edit.  Find SRIRACCHA plasmids at Addgene GEMCherry2, an improved monomeric fluorescent...embryonic stem cells.  Find GEmCherry2 reporter plasmids at Addgene Overall SRIRACHA and GEmCherry2 reporter...
  11. CRISPR Protocol for Genomic Deletions in Mammalian Cell Lines [Video]

    Type
    Blog Post
    ...study of non-coding regulatory elements. Regulatory DNA function is typically inferred based on correlative...procedures. The video details how to transfect CRISPR plasmids into MEL cells by electroporation, sort your transfected... PubMed. More CRISPR Refereces: Browse CRISPR Plasmids CRISPR Information at Addgene More CRISPR-...
  12. Plasmid Cloning by Restriction Enzyme Digest (with Protocols)

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    Protocol
    ...You may also like... Restriction Digest of Plasmid DNA DNA Ligation Bacterial Transformation Summary The...promoters, selectable markers, or any other DNA element between plasmids. Let's assume that you are beginning...recipient plasmid (usually in the Multiple Cloning Site (MCS)), but do not cut elsewhere on the plasmid Will...sites to your recipient plasmid : You can modify the MCS of your recipient plasmid using Annealed-oligo ...Procedure Digest your DNA Set up restriction digests for your donor and recipient plasmids. Because you lose.... We recommend 1.5-2μg of donor plasmid and 1μg of recipient plasmid. It is also critical that as much...re-circularization of the recipient plasmid. You should treat your digested recipient plasmid with a phosphatase prior...
  13. Multiplex Genome Editing with CRISPR-Cpf1

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    Blog Post
    ...transfection of single plasmids vs pooled plasmids; for multiple edits, single plasmids are generally more...transfected on a single plasmid. This is versus 2.4% of cells transfected with a pool of plasmids that contained...sites. This eliminates bulk from crRNA expression plasmids resulting in smaller, more streamlined vectors...contained one crRNA per plasmid plus a Cpf1 expression vector.  See the graph in figure 2 for a comparison of...  Lentiviruses carry a (+) strand RNA copy of the DNA sequence, which is a suitable substrate for Cpf1....your research? Check out the Cpf1 multiplexing plasmids available from Addgene. If you have any questions... Our CRISPR Multiplexing Resources Find CRISPR Plasmids for Your Research Catch up on Your CRISPR Background...
  14. Molecular Biology Protocol - Restriction Digest of Plasmid DNA

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    Protocol
    ... Protocols Restriction Digest of Plasmid DNA Restriction Digest of Plasmid DNA You may...... Recovering Plasmid DNA from Bacterial Culture Purifying DNA from an Agarose Gel DNA Ligation Introduction...digest of plasmid DNA Protocols...Electrophoresis chamber Pipetman Reagents Liquid DNA aliquot of your plasmid of interest (see below for recommend ...to digest your plasmid. Pro-Tip To determine which restriction enzymes will cut your DNA sequence (and ...typically involves ∼500 ng of DNA, while molecular cloning often requires 1 µg of DNA. The total reaction volume...volume of DNA to be cut. A typical restriction digestion reaction could look like this: 1 µg DNA 1 µL of...
  15. Protocols for Molecular Biology, Plasmid Cloning, and Viral Preps

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    Protocol
    ...the Video! DNA Ligation Assemble DNA using DNA ligase Bacterial Transformation Introduce DNA into a bacterial...phenol-chloroform extract, and precipitate DNA DNA Quantification Measure DNA concentration with a spectrophotometer...and analyze plasmid DNA with restriction enzymes Agarose Gel Electrophoresis Separate DNA by size on an...Add a short stretch of DNA to a plasmid Gibson Assembly Combine overlapping DNA fragments in a single ...complicated procedures. Plasmid Cloning Protocols for constructing and analyzing your plasmids. Virus Protocols...Store bacterial strains or plasmids for long term use Watch the Video! DNA Purification Miniprep, phenol-chloroform...Amplify CRISPR pooled-plasmid libraries Diagnostic Restriction Digest Verify a plasmid using restriction ...
  16. Protocol - How to Ligate Plasmid DNA

    Type
    Protocol
    ... Protocols DNA Ligation DNA Ligation You may also like... Plasmid Cloning by Restriction...and insert DNA to use. Combine the following in a PCR or Eppendorf tube: Vector DNA Insert DNA Ligase Buffer...How to Ligate Plasmid DNA Protocols...Restriction Enzyme Digest Restriction Digest of Plasmid DNA Bacterial Transformation Background Information...the construction of a recombinant plasmid is connecting the insert DNA (gene or fragment of interest) into...backbone of the two DNA fragments. This reaction, called ligation, is performed by the T4 DNA ligase enzyme....ligation, the insert DNA is physically attached to the backbone and the complete plasmid can be transformed...
  17. Cultivating Community Science at BosLab

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    Blog Post
    ...Kotton Learn How Plasmid Sharing Speeds Science Resources at Addgene.org Order Plasmids from Addgene! ...to engineer microbes. We’ve ordered a few yeast plasmids from Addgene and are eager to do our first yeast...community to collect various soil samples, extract DNA, sequence it, and analyze the data to characterize...
  18. FLEx Technology and Optogenetics: Flipping the switch on gene expression with high spatial and temporal resolution

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    Blog Post
    ... about FLEx vectors Download our Plasmids 101 eBook Read our plasmids blog posts Resources on the Addgene...molecular biology reference Find Cre-lox plasmids at Addgene Browse plasmids at Addgene ...site-specific recombinases such as Cre or Flp that induce DNA recombination at defined recognition sites (i.e.,...Wolf, and R. J. Samulski. "Delivering transgenic DNA exceeding the carrying capacity of AAV vectors." ...
  19. Protocol - Bacterial Transformation

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    Protocol
    ...also like... Plasmid Cloning by Restriction Enzyme Digest Restriction Digest of Plasmid DNA DNA Ligation ... will help to maintain the plasmid without rearrangement of the plasmid DNA. Additionally, specific treatments...tube of plasmid DNA and just need to transform bacteria so that you can grow up more of the plasmid) you ... which foreign DNA is introduced into a cell. Transformation of bacteria with plasmids is important not...both storing and replicating plasmids. Because of this, nearly all plasmids (even those designed for mammalian...the least expensive) are fine for transforming plasmid DNA for the purposes of storage and amplification...transforming with very small amounts of DNA or if you're multiple plasmids at once. To save money, many labs...
  20. Antibodies 101: Flow Cytometry

    Type
    Blog Post
    ... viability controls such as DNA binding dyes and amine reactive dyes. DNA binding dyes, such as propidium...membranes as is the case with dead or dying cells. DNA binding dyes are not compatible with protocols that...amine reactive dye, such as LIVE/DEAD stain. Like DNA binding dyes, amine reactive dyes can only pass through...Visit the Fluorescent Protein Guide Find antibody plasmids for your experiments ...
Showing: 281 - 300 of 504 results