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We narrowed to 61 results for: eukaryotic cell

Showing: 1 - 20 of 61 results
  1. Plasmids 101: Transformation, Transduction, Bacterial Conjugation, and Transfection

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    Blog Post
    Published
    June 25, 2019, 12:54 p.m.
    ... into cells in the lab. The introduction of foreign DNA or RNA into bacteria or eukaryotic cells is a ...application of an electrical charge to cells, to increase cell membrane permeability and thus transformation...transduction to introduce foreign DNA into eukaryotic cells, like mammalian cell lines. This can be done with lentiviral...the genome and stable cell lines, where foreign DNA is incorporated into the cell’s genome and is thus passed... pokes holes in the cell membrane so DNA can be introduced directly into the cell. Microinjection requires...multiple ways foreign DNA can be introduced into cells including transformation, transduction, conjugation...genetic material from the environment by bacterial cells. In nature, this genetic material often comes from...
  2. Plasmids 101: Shuttle Vectors

    Type
    Blog Post
    Published
    May 20, 2025, 1:15 p.m.
    ...target cells; you also have to consider how to keep it there. In fast-growing populations of cells, the ...into the host cell’s genome, so no special sequence is needed to retain the vector as cells divide. In transient...compatible cell lines that express viral machinery. Alternatively, some slow-growing cells, particularly...transfect the vector a viral ori in a compatible cell line cells that replicate slower than the duration of ...is delivered to your target cells, you still need to select for the cells that contain it. Antibiotic ...translate to eukaryotes. For example, beta-lactam antibiotics like penicillin and ampicillin inhibit cell wall...wall synthesis. Eukaryotes, with no cell walls, can grow alongside these antibiotics just fine. This is ...
  3. Plasmids 101: The Promoter Region – Let's Go!

    Type
    Blog Post
    Published
    April 3, 2014, 8:05 p.m.
    ... a big issue for cells, but it may confound research results or even kill your cells if your gene of interest...necessary to replicate plasmids and make sure the cells maintains it. Here, we'll cover the promoter, which...bacteria this is done by a single enzyme; however, eukaryotes have muliple polymerases which are each responsible...subset of RNAs. To gain this specificity, the eukaryotic RNAP can recognize and bind to specific promoter... Because transcription machinery differs between cell types or organisms, promoters must be similarly ...variable. Bacterial promoters only work in prokaryotic cells and typically only in the same or closely related... they were derived. Similarly, the various eukaryotic cell types (mammalian, yeast, plants, etc) require...
  4. Plasmids 101: Multicistronic Vectors

    Type
    Blog Post
    Published
    Sept. 9, 2014, 8:20 p.m.
    ...them. Why Use multicistronic vectors? Detecting cells that are expressing your gene, especially if you...reporters allow you to easily screen or select for cells that are expressing your gene of interest at high...promoter, multicistronic plasmids ensure that any cells that are positive for your marker should also be...anytime you want to express multiple genes in the same cell. Although it is possible to drive co-expression ...described below. IRES Elements Translation in eukaryotes usually begins at the 5’ cap so that only a single...promotes translation of the viral genome in eukaryotic cells.1,2 Since then, a variety of IRES sequences... cistron due to factors such as the experimental cell type and the specific genes cloned into the vector...
  5. K. phaffii: Rising to the Occasion

    Type
    Blog Post
    Published
    April 4, 2023, 1 p.m.
    ...Yeast as a model organism Yeast are single cell, eukaryotic organisms formally classified as fungi. They...We all know that yeast is a powerful eukaryotic model organism – its genome is easy to manipulate, it... Amenable to genetic manipulation The first eukaryote (S. cerevisiae) to have its genome fully sequenced...similarity to the ancient yeast strains and metazoan cells.   Applications for K. phaffii There’s a number ...protein bang for your media buck - it grows at higher cell densities than most of its counterparts, yielding...oxidative reactions. They are found in all eukaryotic cells and peroxisomes are where methanol metabolism...
  6. Tips for Screening with Yeast Two Hybrid Systems

    Type
    Blog Post
    Published
    Oct. 22, 2015, 2:30 p.m.
    ...of discovery in the field of eukaryotic transcriptional activation and cell biology. During this period...extensively to screen for molecular interactions in the cell, including protein-protein, protein-DNA and protein-RNA...The reporter gene then allows detection of those cells where binding between the proteins of interest has...library (e.g. the entire proteome of a particular cell type, or a subset based on a cellular compartment...protein degradation, access to the nucleus in eukaryotic screens and fusion configuration. The possibility...alternative fungi (C. albicans, pC2HB) (7) and mammalian cells. If the problem is that your proteins are not post-translationally...to bind DNA and activate a reporter gene in eukaryotic cells, fusion proteins must gain access to the nucleus...
  7. Fluorescent Proteins 101: Fluorescent Biosensors

    Type
    Blog Post
    Published
    May 18, 2017, 2:30 p.m.
    ...Localization within cells Fluorescence microscopy Visualize components of individual cells Separation/identification...fluorescently-labeled components Fluorescence-activated cell sorting (for cells); fluorescent HPLC (proteins or other molecules...biosensor Before expressing a biosensor in eukaryotic cells, think about the best place for the biosensor...average amount of fluorescence across a population of cells (i.e. in a plate well). Use to track a process (... molecules) Isolate or quantify cells, proteins or other molecules that have been labelled with your fluorescent...
  8. Plasmids 101: Choosing an Antibiotic Resistance Gene

    Type
    Blog Post
    Published
    Oct. 10, 2023, 1 p.m.
    ...prevent cell death. One of the cool things about amp is that it's exclusively toxic to dividing cells. The...synthesis), while amp only affects the cell wall synthesis step during cell division. This is nifty because ...Excellent No Bacteria, plants, and eukaryotes Not Tn5-containing cells {% icon icon_set="fontawesome-5.14.0..., penicillin, and is a beta-lactam that inhibits cell wall synthesis. The AmpR (amp resistance) gene produces...at 37 degrees) can be shortened since the plated cells will have time to produce beta-lactamase prior to...penicillin family of antibiotics. It interferes with cell wall synthesis as its mode of action (sound familiar...aminoglycosides, including G418 which is commonly used for eukaryotic antibiotic selection. Essentially, this gene ...
  9. Our Most Popular Blog Posts from 2019

    Type
    Blog Post
    Published
    Dec. 31, 2019, 2:26 p.m.
    ...introduction of nucleic acids into bacteria or eukaryotic cells is a common technique in molecular biology...
  10. Plasmids 101: Inducible Promoters

    Type
    Blog Post
    Published
    Jan. 18, 2018, 2:34 p.m.
    ...versatile tool developed for use in prokaryotes and eukaryotes, works via direct activation. In this system,...stimulate AraC binding to I1 and I2 sites. Supplementing cell growth media with glucose decreases cAMP and represses... Because transcription machinery differs between cell types or organisms, promoters are similarly variable...variable. Bacterial promoters only work in prokaryotic cells and typically only in the same or closely related... they were derived. Similarly, the various eukaryotic cell types (mammalian, yeast, plants, etc.) require...
  11. Plasmids 101: Origin of Replication

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    Blog Post
    Published
    Nov. 11, 2020, 2:23 p.m.
    ...to reproduce itself as it must to survive within cells. The replicons of plasmids are generally different...simplicity’s sake, we've ignored those used in eukaryotic cells and viruses and focused only on those found...example, the pMB1 ori maintains about 20 copies per cell, while pUC – which differs by only two mutations...mutations – will produce as many as 700 copies per cell. Figure 1: A plasmid map showing the standard ...positives? Will you have only one plasmid type in your cells at a time? Do you want to make a lot of your plasmid... stabs, or liquid cultures. Freshly transformed cells also give a higher plasmid yield that colonies streaked...bacteria have just reached stationary phase, but the cells have not started to die off. Have any questions...
  12. Rewiring Metabolic Circuitry with CRISPR RNA Scaffolds [Video]

    Type
    Blog Post
    Published
    April 7, 2015, 4:21 p.m.
    ...multiple loci is deftly coordinated by the eukaryotic cell for the execution of many complex cellular ...toxic intermediate buildup as well as controlling cell fate decisions. By using an orthogonal dCas9 protein...for sequence-specific control of gene expression. Cell, 152(5), 1173-1183. (2013). PubMed. Zalatan, J...Transcriptional Programs with CRISPR RNA Scaffolds. Cell, 160(1), 339-350 (2015). PubMed. Find the Plasmids...crispr/qi/ Plasmids described in  Zalatan et al. Cell  (2015) can be found here: https://www.addgene.org.../article/9593/ Plasmids described in Qi et al. Cell  (2013) can be found here: https://www.addgene.org...
  13. Multiple Plasmids at a Low Price: Kits from Addgene

    Type
    Blog Post
    Published
    Sept. 14, 2016, 2:30 p.m.
    ...Purification Process with pCri Cell-free protein expression kit Cell-free expression systems have been...backbones that enable cell-free expression of proteins in both prokaryotic and eukaryotic cell extracts (Gagoski...testing and comparison of different cell-free expression systems; the Cell-free expression test kit represents...: FX Cloning Kit BIOFAB Plasmid Set pCri System Cell Free Protein Expression Kit FREQ Seq PUF Assembly...facilitate gene expression in bacteria, yeast, mammalian cells, insects, and even Xenopus oocytes. The expression...been improved for both eukaryotic and prokaryotic expression in recent years, with many different systems...sequence bypasses the 5′ mRNA cap required for eukaryotic systems and instead directly engages the ribosome...
  14. CASTing Off for New Shores in Human Genome Editing

    Type
    Blog Post
    Published
    June 10, 2025, 1:15 p.m.
    ... But they were barely effective at editing eukaryotic cells — at least, until they met the directed evolution...components. It drove 19% integration in HEK293T cells (more than 500 times better than the precursor it...R. (2025). Programmable gene insertion in human cells with a laboratory-evolved CRISPR-associated transposase...
  15. Antibodies 101: Affinity Reagents

    Type
    Blog Post
    Published
    April 14, 2022, 1:15 p.m.
    ...small enough to be expressed in bacterial and other cell systems. Since the majority of these alternative...the constant region. Nonspecific binding, caused cell receptors for the constant region, is also reduced...monobodies can be easily expressed in transfected eukaryotic cells, allowing for them to be used as intracellular..., peptides, amino acids, drugs, metal ions, and cells. They can be used either with or as fluorophores...
  16. Multiplexed Capture of Promoter-enhancer 3D Chromatin Structures Using CRISPR

    Type
    Blog Post
    Published
    July 2, 2020, 12:40 p.m.
    ...targeted One Many Sample type(s) Cell lines Cell lines, primary cells Table 1: Key differences between... of cells (~5x107). Together, these two requirements prevent the use of CAPTURE with primary cells or ...need to create stable cell lines and allows CAPTURE 2.0 to be used with primary cells. Find plasmids for...CAPTURE method requires the creation of a stable cell line that co-expresses three components: dCas9 ...drawback of the original CAPTURE method is that a new cell line has to be created for each genomic loci of ...across multiple targets because different CAPTURE cell lines will have varying levels of dCas9 and gRNA...or rare cell populations. Key components of the CAPTURE 2.0 system To improve upon the original CAPTURE...
  17. CRISPR 101: Targeting RNA with Cas13a (C2c2)

    Type
    Blog Post
    Published
    Sept. 21, 2017, 2:07 p.m.
    ...thought to activate programmed cell death or a dormant state for bacterial cells that have been infected with...bacterial cells, LwaCas13a does not display nonspecific RNA cleavage activity in eukaryotic cells. They arrived...target RNAs, although its usefulness in bacterial cells will likely be limited by the propensity of Cas13a...pool of RNAs) or studying RNA processing in live cells. Indeed, groups have utilized dCas13 fusion proteins...genotype human DNA, identify tumor mutations within cell-free genomic DNA, and detect COVID-19 (Joung, Ladha...Ladha et al., 2020). Cas13a in mammalian cells The Zhang lab made the exciting discovery that some Cas13a...Cas13a orthologs can function in mammalian and plant cells (Abudayyeh et al., 2017). They characterized Cas13a...
  18. Plasmids 101: Plasmid Incompatibility

    Type
    Blog Post
    Published
    March 31, 2020, 1:15 p.m.
    ...copy number in the cell is high, but allows replication when copy number in the cell falls too low (Novcik...system to partition themselves to each daughter cell during cell division. They don’t simply rely on chance... daughter cell, instead of partitioning each type of plasmid into a separate daughter cells (Figure 2)...from the cell with the same probability, or asymmetrical, where one plasmid lost from the cell at a higher...different plasmids to be maintained in one bacterial cell. In this Plasmids 101 post, we’ll cover why this...incompatibility occurs when multiple plasmids within one cell have the same replicon and/or partitioning system...the same replication control machinery within the cell. Most plasmids encode a negative regulation system...
  19. CRISPR 101: Homology Directed Repair

    Type
    Blog Post
    Published
    Jan. 26, 2023, 2:15 p.m.
    ...directed repair fix DNA double-strand breaks?  In eukaryotic cells, repair of DSBs occurs primarily by two pathways...used, however, these are generally more toxic to cells than their plasmid counterparts. Another consideration...how to fix a broken relationship. Pardo B, et al. Cell Mol Life Sci (2009). PubMed. Regulation of DNA...break repair pathway choice. Shrivastav M, et al Cell Research (2008). PubMed. Mechanisms of DNA double-strand...Improve HDR Efficiency for CRISPR Editing in Human Cells Resources on Addgene.org Browse All CRISPR Plasmids...
Showing: 1 - 20 of 61 results