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Showing: 321 - 340 of 737 results
  1. Plasmids 101: Protein tags

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    Blog Post
    ... be to fuse an affinity tag to it. The FLAG, hemaglutinin antigen (HA), and c-myc tags have been the workhorses...KRRWKKNFIAVSAANRFKKISSSGAL 4 Affinity and Purification Binding and elution steps use very moderate buffer conditions FLAG...cytometry, but rarely used for purification as elution requires low pH poly His HHHHHH  0.8 Affinity...
  2. Plasmids 101: Broad Host Range Plasmids

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    Blog Post
    ... Variation in ori structure allows plasmids to utilize diverse host replication machinery. For instance...Paracoccous denitrificans, Pseudomonas fluorescens, P. putida, Rhizobium meliloti, R. leguminosarum by. viciae... P. C., & Wong, H. L. (2023). Development of constitutive and IPTG-inducible integron promoter-based expression...
  3. New CRISPR Tools: Cas7-11 and PASTE

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    Blog Post
    ...The hardest part of any revolutionary discovery, including CRISPR, is turning potential into impact. ...collaborators of Omar and Jonathan and experts in CRISPR evolution, were also working on the project. Using computational...possibilities at the bench and potentially in therapeutic applications. The potential of CRISPR has yet...
  4. Viral Vectors 101: Pseudotyping

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    Blog Post
    ...specific purposes as described previously (Table 1, Gutierrez-Guerrero, et al, 2020). Because retrovirus is ...disadvantages: Table 1 (Joglekar et al., 2017)  Table 1 (Gutierrez-Guerrero et al., 2020) Table 1 (Cronin et al.,...–222 . https://doi.org/10.1006/mthe.2000.0116 Gutierrez-Guerrero A, Cosset F-L, Verhoeyen E (2020) Lentiviral...
  5. To Codon Optimize or Not: That is the Question

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    Blog Post
    ...in vivo experiments and in biotechnology and therapeutics (Mauro and Chappell 2014).  Ultimately, it is...critical analysis of codon optimization in human therapeutics. Trends in Molecular Medicine 20:604–613  https...ZE, Kimchi-Sarfaty C (2011) Understanding the contribution of synonymous mutations to human disease. Nat...
  6. CRISPR-mediated Plant Base Editors

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    Blog Post
    ...by Gaudelli et al. resulted in the successful evolution of an adenosine deaminase that can act on DNA ...for surviving colonies and subsequent rounds of evolution and engineering gave rise to a mutant TadA (TadA...in rice. In Genome Engineering: The CRISPR-Cas Revolution, Cold Spring Harbor Laboratory (2018). Additional...
  7. Plasmids 101: Codon usage bias

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    Blog Post
    ...; multiple codons encode single amino acids. Evolutionary constraints have molded which codons are used...express well in any organism. So what are the evolutionary constraints that lead to these preferences and...6. Pechmann, Sebastian, and Judith Frydman. "Evolutionary conservation of codon optimality reveals hidden...
  8. Viral Production at Addgene

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    Blog Post
    ...Briefly, 293T cells are transduced with serial dilutions of a lentiviral vector, incubated for 72 hours...line was obtained directly from Takara, and is routinely tested for mycoplasma contamination using mycoplasma...Cells transduced with our lentiviral vectors are routinely checked for signs of microbial contamination. ...
  9. Using Video to Share Your Science: We Share Science

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    Blog Post
    ... variety of fields in order to provide useful solutions to complex challenges. As a cross-disciplinary...citation rates to measure the impact of their contribution. It offers a 5-step process and several examples...Social Networking for Scientists Read about the Evolution of Scientific Impact Data Freedom: The Expansion...
  10. Harnessing Bacterial Toxins for Allelic Exchange

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    Blog Post
    ...resistance marker from the vector (abR, Figure 1). The resolution step (“double crossover”) which leads to the ... program) (Latynski and Valentovich 2014). We routinely clone the purified amplicons upstream and downstream... in 5 days. Counter-selection with sacB has revolutionized allelic exchange. Even now, only half our lab...
  11. The Fluorescent Vegetables in Aptamer Soup

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    Blog Post
    ...fluorescent aptamer, was identified through directed evolution. First, a pool of RNAs that activate the fluorescence...fluorescence of DFHBI were identified using systematic evolution of ligands by exponential enrichment (SELEX). ... by fluorescence-based selection and directed evolution." Journal of the American Chemical Society 136.46...
  12. CRISPR 101: Homology Directed Repair

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    Blog Post
    ...external forces such as ionizing radiation, chemotherapeutics, and ultraviolet light. In this post, we will...via cleavage in one of two ways - each junction resolution could happen on the crossing strand (horizontally...repair and genome engineering CRISPR-Cas9 has revolutionized the genome engineering world and made targeted...
  13. Four Ways to Package Transgenes That Exceed the Size Limit of Adeno-associated Virus

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    Blog Post
    ...be dominant-negative and/or toxic. A potential solution is to include an in-frame degron, or degradation...in a single step and serve as donors for two consecutive CRISPR-mediated HDR events which results in the...Gibbs D, Kim SR, Maguire A, Rex TS, Di Vicino U, Cutillo L, Sparrow JR, Williams DS, Bennett J, Auricchio...
  14. New Optogenetic Tools for Cytoskeleton and Membrane Control

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    Blog Post
    ...activity of the original, generated using directed evolution (Tei et al., 2023).  PLD can hydrolyze phosphatidylcholine...matter. Plus, for folks interested in directed-evolution methods, the activity-based selection in mammalian...Baskin, J. M. (2023). Activity-based directed evolution of a membrane editor in mammalian cells. Nature...
  15. Site Directed Mutagenesis by PCR

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    Blog Post
    ...can be used to introduce specific nucleotide substitutions (or deletions) in a tailored manner. The approach...perform alanine scanning mutagenesis or targeted substitution of key residues), and in SNP analysis (to introduce... bases at the 3’-end interfere with plasmid reconstitution, and consequently Taq polymerases cannot be...
  16. Plasmids 101: Dimers and Multimers

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    ...and accessibility, more researchers have been utilizing full plasmid sequencing services to verify the...independently increase the frequency of base substitution in human cells. J Biol Chem. 2011 Mar 25;286...E, Fournes F, Cornet F, Hallet B, Rousseau P. Resolution of Multimeric Forms of Circular Plasmids and ...
  17. PiggyBac-ing Through the Genome Editing Field

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    Blog Post
    ... transcription factors, or when the gene is constitutively-active or a dominant-negative mutant. Reducing...piggyBac™ transposase. This can be best achieved by utilizing a piggyBac™ transposon in a donor plasmid carrying...and M. H. Wilson, “piggyBac-ing models and new therapeutic strategies.,” Trends Biotechnol., vol. 33, no...Resources on the Addgene Blog Learn about the Sleeping Beauty Transposase Read up on Genome Engineering with ...
  18. A Guide to Getting Started in Undergrad Research

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    Blog Post
    ...involved in the science, experimental design, and execution. Can lead to an independent project. Lab technician...Other roles you might see Lab manager: managerial duties ex: order materials, lab maintenance Administrative...Administrative assistant: assists PI with admin duties Staff scientist: similar role to a postdoc but more permanent...
  19. Sequencing Options for CRISPR Genotyping

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    Blog Post
    ...play significantly into the realm of clinical therapeutic development as CRISPR is used not only to study... Dillard, and Ayokunmi Ajetunmobi for their contributions to this work. Søren Hough is a Biochemistry ...PMC4320661. 14. Crosetto, Nicola, et al. "Nucleotide-resolution DNA double-strand break mapping by next-generation...
  20. Antibodies 101: Flow Cytometry

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    Blog Post
    ...cloning rings or following labor-intensive limiting dilution protocols? If this sounds like you, then flow ...control, the higher the level of expression. A routine flow cytometry experiment uses 2 or 3 different...you would need a way to determine the relative contribution of yellow and orange from FITC and that from...
Showing: 321 - 340 of 737 results