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We narrowed to 560 results for: mal.2

Showing: 241 - 260 of 560 results
  1. How to Negotiate a Successful Lab Start Up Budget

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    ...identifying the resources needed to accomplish that goal. 2. Identify the tools in that timeline Avoid writing...based on experimental timelines and specific aims. 2. Then make decisions based on financial values. All...Would I be able to get access to these materials?” 2. Always negotiate for a win-win decision An institute...science, and can include: equipment, reagents, animals, glassware, and even people. When developing a ...budget bottom line costs may be rather high. That’s normal, because this is where you can start to identify... modeling and collaborations rather than using animals, then that’s a cost that you can eliminate from...
  2. History of CRISPR Cas - A tale of survival and evolution

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    ...re-exposure (2, 3). More specifically, specialized Cas proteins snip the foreign DNA into small fragments..., accessed 25 November 2013. Author: James Atmos (2). Many CRISPR/Cas moieties carry out these functions...editing was initially described by Cong et al. and Mali et al. in January 2013 (7, 8). Nine months later...Zhang F. Science. 2013 Jan; 339 (6121): 819–23. Mali P, Yang L, Esvelt KM, Aach J, Guell M, DiCarlo JE...
  3. Hot Plasmids - September 2019 - CRISPR, Auxin Inducible Degradation, MerMAID Channelrhodopsins, and Genome Looping

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    ...Article contributed by Eric Perkins Mammalian genomic DNA is not just a 2-D linear molecule snaking through...target sites for editing. PAM sequences can be from 2-6 base pairs in length and follow the DNA sequence...was able to translate AID to yeast, as well as mammalian and human cell lines (Nishimura et al., 2009, ...loops to create genomic interactions that wouldn’t normally occur. The synthetic looping factors developed...
  4. Antibodies 101: Single Chain Fragment Variables (scFvs)

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    ...panning and scFv characterization.    Figure 2: Phage display starts with a pooled library of scFvs...the short epitope GCN4, also called a scaffold; and 2) a GCN4 binding scFv that’s fused to GFP. When the...Fv (Variable Domain) (scFv) Fragments. Antibodies 2:193–208 . https://doi.org/10.3390/antib2020193  Khantasup...while mAbs generally require mammalian expression systems. scFvs are also small enough to be screened for...genes from B cells of immunized animals, but it's possible to avoid animal use by using semi-synthetic or...al., 1988; Huston et al., 1988). scFvs are the smallest unit of an antibody molecule that can bind antigen...scFv’s advantages are rooted in their size. Being smaller means scFvs are easier and cheaper to make because...
  5. PRIDICT: Predicting Efficiencies of Prime Editing Guide RNAs

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    ... flanking sequences to their input string (Figure 2). This string can then be used as input for the prediction...top 5) and test them in their labs. Figure 2: Guidelines to predict pegRNA efficiencies with pridict.it...Biotechnology. https://doi.org/10.1038/s41587-024-02268-2 Schep, R., Brinkman, E. K., Leemans, C., Vergara, ...allows precise modifications of DNA (replacements, small insertions, and deletions) without introducing DNA...
  6. Hot Plasmids: Fall 2024

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    Blog Post
    ...improve solubility and stability (Figure 2).      Figure 2: Crystal structures of CRBNmidi alone...fluorescent tags in Caenorhabditis elegans. Genetics, 228(2), iyae126. https://doi.org/10.1093/genetics/iyae126...requiring rapid maturation and prolonged imaging with minimal background.   Find these C. elegans mScarlet plasmids...18 kDa) and STReTCh (11 kDa) are significantly smaller than FRET-based mechanosensors (~60 kDa) and are...
  7. Plasmids 101: Broad Host Range Plasmids

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    ...host range plasmids. FEMS Microbiology Letters, 348(2), 87–96. https://doi.org/10.1111/1574-6968.12241  ...mobilization of broad host-range IncQ plasmids. Plasmid, 62(2), 57–70. https://doi.org/10.1016/j.plasmid.2009.05.001...negative hosts. Biotechnology and Bioengineering, 106(2), 326–332. https://doi.org/10.1002/bit.22695  Schmidhauser...Yersinia enterocolitica, Xanthomonas campestris, X. maltophilia IncW pSa, pR388 Gram-negative  Acinetobacter...campestris pv. campestris, X. campestris pv. malvacearum, Zymomonas mobilis pBBR1 based pBBR1 ...
  8. Tips for arabidopsis transformation

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    ... Plant Methods. BioMed Central, 2(1), p. 19. doi: 10.1186/1746-4811-2-19. PubMed PMID: 17087829. PubMed...PMID: 24032037. PubMed Central PMCID: PMC3759027. 2 Harrison, S. J. et al. (2006) ‘A rapid and robust ...inoculated from a colony on a plate will reach an optimal density in 18-24 hours. I then add 0.5 mL of this...
  9. Evolution of Lab Techniques

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    ... is the genetic test used for sickle cell anemia (2). Southern blotting, in conjunction with restriction...program) can then reproduce the DNA sequence (Figure 2). Accuracy and accessibility led to the widespread...biology98.3 (1975): 503-517. PubMed PMID: 1195397. 2. Chang, Judy C., and Yuet Wai Kan. "A sensitive new...generating transgenic animals may choose Southern blotting to screen founder transgenic animals for the inserted.... In southern blotting, DNA is fragmented into smaller pieces, run on a gel, and transferred to a membrane...to screen multiple colonies before selecting a smaller subset to sequence. Sequencing gels and next-generation...for the extension of a DNA strand (8). Adding a small amount of a single radiolabelled ddNTP to a synthesis...
  10. Plasmids 101: Common Lab E. coli Strains

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    ...Table 2: Lab strains of E. coli Strain Natural resistance Primary Use Genotype ccdB Survival 2 T1R ...resistance to tetracycline Additionally, Table 2 provides a quick reference for some of the popular...designing your plasmid – you carefully selected the optimal promoter for your gene of interest, painstakingly...coli are mainly found in the intestinal tract of animals. There are many different naturally occurring strains...arabinose as a carbon source leuB β-isopropyl malate dehydrogenase inactivated Requires exogenous leucine...is non-functional. If a gene is deleted, it is normally noted with a Greek delta (Δ).  Additional resources...of Replication The Promoter Region – Let's Go! Mammalian Vectors Looking for More Plasmids 101 Articles...
  11. CRISPR 101: Off-Target Effects

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    ...sites would confound your experimental results and 2) perform targeted off-target measurements at those...experiments where only localization of the Cas occurs. 2 gRNA approach Off-targets that come from mutations...perform downstream characterization of, isolating 2 or 3 distinct clones to perform key experiments on...typically 20 nts and the genomic locus must often be proximal to a PAM site for DNA cutting to occur. The RNA...experiment, at least one will likely be useful. Optimal gRNA selection With some CRISPR experiments, there...can reduce off-targets at a fundamental level. Optimal Cas selection Once you’ve selected a gRNA with ... off-target confounding your results should be minimal. For example, if your goal is to generate a knock-out...
  12. Troubleshooting and Optimizing a Western Blot

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    ...Tables 1 and 2 in our Technical Design of a Western Blot post to make sure you have the optimal gel for your... that all look exactly alike.      Figure 2: Reagent gradient. Here, the lanes are lightly marked...guide. The gel is then removed from the membrane (2) and the membrane is cut so each lane is its own piece...the antibody’s dynamic range. Specifically, the 1:2, 1:1, and No dilution samples all have approximately...conditions are 4 °C overnight or room temperature for 1–2 hours, there is some evidence that antibodies may ...said, normalizing to total protein expression is preferable, and more accurate, than normalizing to ubiquitously...common (non-technical) issues with transferring are smaller proteins going completely through the membrane ...
  13. FastCloning: A Newer, Simpler Cloning Technique

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    ...vector:insert ratio is used in the DpnI digestion and 2 µL of digest product are used in the transformation...Biology 38 (2016): 145-154. PubMed PMID: 27391134. 2. Li, Chaokun, et al. "FastCloning: a highly simplified...confirm that the products were amplified by running a small aliquot of the reaction on an agarose gel. You should...
  14. Antibodies 101: Avoiding the Mouse on Mouse Mess in IHC

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    ...recognize Fab fragments from the same species and 2) these fragments will be more likely to bind (and ...epitopes recognized by the secondary.   Figure 2: There are a few common solutions to avoid background... apply your primary and secondary antibodies as normal. Ideally, your secondary will only bind to your...
  15. DAP arrays for multiplex gene editing

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    ... as muscular dystrophies, heart disease, and type 2 diabetes, across four different types of human cells...(#186715) and hCtRNA_VT (#186716).   Fig. 2: Comparison of previous representative dual-gRNA architectures...MBE) and multiplex prime editing (MPE) with only minimal payloads. DAP array  Although CRISPR-Cas12a, with...advantages in gene editing, while keeping the system to minimal size. To do so, they harnessed the tRNA processing...any cell type or organisms of interest with only minimal genetic payloads. Different from existing multiplex...
  16. Visualizing Genomic Loci with CRISPR-Sirius

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    ...that the signal to noise ratio can be increased from 2-fold (by CRISPRainbow) to 3-fold with CRISPR-Sirius...CNV) analysis of the U2OS cells.   Figure 2: CRISPR-Sirius tricolor labeling. (A) Diagram of sgRNA-Sirius...based multicolor labeling system to visualize chromosomal loci in human cells (Ma et al., 2015). To do ...aptamers are nucleic acid sequences that bind to the small molecule, DFHBI-1T to induce its fluorescence. They...Hanhui et al. “Multicolor CRISPR labeling of chromosomal loci in human cells.” Proceedings of the National...
  17. Synthetic Photobiology: Optogenetics for E. coli

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    ...Marcotte EM, Voigt CA. Nature. 2005 Nov 24;438(7067):441-2. PubMed. Find the plasmids from this publication ...Levskaya A, Voigt CA. J Mol Biol. 2011 Jan 14;405(2):315-24. doi: 10.1016/j.jmb.2010.10.038. Epub 2010... biological processes. Chemical effectors are suboptimal for a number of reasons, including their potential...number of plasmids, with one RR (ompR) encoded chromosomally. Leakiness was also an issue; some promoter ...transcription factors, for which low expression levels are optimal. These tools are compatible with many strains of...
  18. Will You Be My Mentor? Finding and Asking for Mentoring Support

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    ...article in the Addgene Blog Mentoring series will cover 2 of the 7 mentoring questions I set out to answer. ...101-Building Relationships for Success”. Choose 1-2 tactics to try. One of my favorites is making the ...Broaden your network Take advantage of formal programs A formal mentoring program can be a great way to...year. Some click and some do not. These are all normal outcomes. If you have a broad range of mentors ...
  19. Antibodies 101: Polyclonal Antibodies

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    ...about a month later, the animal is given additional booster immunizations every 2-3 weeks to increase the...antibodies is reached - typically within 2-4 months. After the animal has the desired level of antibodies ...Polyclonal antibodies are generated by injecting an animal with an immunogen, then isolating and purifying....com. To generate polyclonal antibodies, an animal (such as a rabbit or a goat) is injected with an...retrieved first by drawing blood from the immunized animal. The red blood cells and the serum are separated...different affinities for IgG subtypes from different animals so it’s important to choose the reagent that works...Only up to 5% of the IgG antibodies produced by an animal are specific for the immunogen. A different type...
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