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We narrowed to 611 results for: RAN-1

Showing: 421 - 440 of 611 results
  1. CRISPR 101: Off-Target Effects

    Type
    Blog Post
    Published
    Feb. 8, 2024, 2:15 p.m.
    ...downstream experiments. You only successfully generate 1 null clone and proceed with it. In this case, the ...there are 10 putative off-target locations you can 1) determine if editing at those sites would confound...While this may effectively serve as a transfection or transduction control, a different gRNA would have..., you’ll want to select a Cas enzyme with low tolerance for mismatches within the gRNA sequence. ...near each other, this will result in a DNA double strand break (DSB), the event required for frameshift ...
  2. Bioinformatics at Addgene

    Type
    Blog Post
    Published
    July 14, 2022, 1:15 p.m.
    ... same output regardless of who or which computer ran the process. Another design choice we appreciated...drives our bioinformatics needs       Fig. 1: QC'ing data at Addgene is like standing under a Niagara...automating the bioinformatics steps needed to transform the raw sequencing data into a complete plasmid...appropriate place in our workflow without having to translate or convert programs to a uniform language.  The...concepts and vocabulary of Nextflow so that we could translate our pipeline steps into processes and then connect...
  3. Design Tips for Prime Editing

    Type
    Blog Post
    Published
    Jan. 23, 2025, 2:15 p.m.
    ... and a reverse transcriptase (RT) template including the desired edit. Figure 1: Prime Editing ...doi.org/10.1038/s41587-021-01039-7 Nishimasu, H., Ran, F. A., Hsu, P. D., Konermann, S., Shehata, S. I....nicking of the unedited strand and encourage the cell to use the edited strand as a template during DNA...on a fusion enzyme of Cas9 nickase + reverse transcriptase and a prime editing guide RNA (pegRNA). The ...although sequences with G/C content outside this range can still be optimized (Anzalone et al., 2019). .... Test different lengths of reverse transcriptase template, starting with about 10–16 nucleotides. For...pegRNA primer binding site (PBS) and reverse transcriptase template (RTT). Created with BioRender.com. ...
  4. Fluorescent Proteins 101: History of Fluorescent Proteins

    Type
    Blog Post
    Published
    Aug. 7, 2017, 1:58 p.m.
    ...in the crystal jellyfish Aequorea victoria (Figure 1) in molecular detail. On the underside of the “umbrella...glowing protein could be used to measure gene transcription, as well as to track protein localization. And...bioluminescent, some types of corals and anemones are vibrantly colored. He hypothesized that GFP-like proteins...
  5. Top 10 Open Science Developments of 2013

    Type
    Blog Post
    Published
    Dec. 19, 2013, 3:46 p.m.
    ... science 1)      In February, the Office of Science and Technology Policy issued a memorandum calling ...(66 percent) gave preference to journal access granted via a public repository or authors’ own web sites...
  6. Our Most Popular Blog Posts from 2019

    Type
    Blog Post
    Published
    Dec. 31, 2019, 2:26 p.m.
    ...changes.   1. Plasmids 101: Transformation, Transduction, Bacterial Conjugation, and Transfection by Alyssa...editing. Using a fusion between Cas9 and reverse transcriptase and a prime editing guide RNA, it can introduce...
  7. Antibodies 101: The Basics of Western Blotting

    Type
    Blog Post
    Published
    March 8, 2021, 2:41 p.m.
    ... western, proteins are: (1) separated by size, (2) transferred to a membrane, and  (3) detected using ...using antibodies.   Figure 1: Overview of the Western blot process. The sample, a mixture of protein...systems efficiently transfer a range of protein sizes in minutes without any transfer buffer. These systems...protein is separated in a gel, transferred to a membrane, stained with antibodies, and finally visualized...a broad size range to be separated on a single gel.  Immobilizing proteins on a membrane Once separated...migrate out of the gel and attach to the membrane.  In a wet transfer system the sandwich is completely submerged...filled with a transfer buffer formulated to conduct the electric current. The wet transfer process is very...
  8. Bringing Sustainable Practices to the Lab: Innovations

    Type
    Blog Post
    Published
    March 7, 2019, 2:39 p.m.
    ...Consistency, and Transparency. This label scores products by their environmental impact on a scale of 1-10: the... but with the right incentives (for example, by grant agencies), we can shift toward a more sustainable...your RMV to the landfill, it’s collected and transferred to the Red2Green processing facility, where it...
  9. Three Tips to Organize Your Lab Notebooks in the New Year

    Type
    Blog Post
    Published
    Jan. 2, 2014, 3:44 p.m.
    ...organized and boost your productivity in 2014. Tip 1: Use color coding, labels, and post-its to make finding...pile of lab notebooks and binder on your desk. Arrange them in chronological order (or by project, if ...Organize you experiments, keep track of upcoming grant deadlines, and sync everything to your calendar....lists of your upcoming tasks, set deadlines, and arrange automatic email reminders. These programs can be...
  10. CRISPR 101: Epigenetics and Editing the Epigenome

    Type
    Blog Post
    Published
    June 24, 2020, 5:45 p.m.
    ...also available for lentiviral transduction. Lysine-specific Demethylase 1 (LSD1) Tatjana Sauka-Spengler's...P2A-PuroR for lentiviral expression. Figure 1: dCas9-p300 adds H3K27ac marks to histones in promoter...light to regulate transcription, also includes light-regulated histone methyltransferases and deacetylases...CRISPR Epigenetics resource. Transcriptional activation p300 acetyltransferase dCas9 fused to the catalytic...other Tet1 delivery systems. Transcriptional repression DNA Methyltransferase 3 Alpha (DNMT3A) Vlatka Zoldoš... PuroR enable sorting and selection of transduced cells. Grant Challen’s lab also created constitutive...associated with transcriptional repression. Created with BioRender.com. DNA Methyltransferase MQ1 Margaret...
  11. Hot Plasmids: Spring 2025

    Type
    Blog Post
    Published
    June 3, 2025, 1:15 p.m.
    ... and deep-brain fiber photometry.  Figure 1: Characterization of iGluSnFR4 in mice. A) Scheme ...CycT1 or PolII-CTD antibodies and unlabeled MS in DLD-1 cells (colorectal cancer). Image courtesy of Brianna...al., 2025). In retrotransposon insertion, a combined endonuclease-reverse transcriptase uses homology ...fused to a shortened R2Tocc transposon protein, and can "retarget" the transposon to new loci in the genome...genome. The modified transposon RNA has untranslated regions (U, blue) on the outside of the homology arms...-associated membrane protein 5 (LAMP5) — as well as cholinergic (choline acetyltransferase, ChAT) neurons...is one of the most important and abundant neurotransmitters, but it is challenging to monitor because ...
  12. Exploring Applications of the Bioluminescent HiBiT Tag

    Type
    Blog Post
    Published
    Oct. 2, 2025, 1:15 p.m.
    ...reconstitutes a fully functional luciferase enzyme (Figure 1). Addition of substrate generates a proportionate ...questions before creating knock-ins.  Figure 1: Schematic of HiBiT tagging technology.   The...HiBiT-tagged targets in translational research Researchers can incorporate HiBiT with a wide range of workflows,...fibrosis transmembrane conductance regulators (CFTR) (Kamada et al., 2023). CFTR is a membrane protein ...reporter to show that the mutants abolished transcriptional activity, even in the presence of endogenous...editors Tracking factors that utilize exosomal transport is quite challenging. Work by Shibata et al. (...converts adenosine to inosine (A-to-I) within double-stranded RNA. They hypothesized that if ADAR1 were carried...
  13. CRISPR 101: Engineering the Plant Genome Using CRISPR/Cas9

    Type
    Blog Post
    Published
    Oct. 11, 2016, 2:30 p.m.
    ...Presented in figure 1). More information on Agrobacterium-mediated transformation can be found in this...interest. Figure 1: Simplified schematic of agrobacterium-mediated transformation in plant cells. Agrobacterium...variants (hereafter referred to as Cas9) and a single stranded guide RNA (gRNA) is sufficient to modify the genome...variants have been created in an effort to increase translation in a particular plant species or cell type (Belhaj...CRISPR components can be expressed stably or transiently depending on the delivery method and cell type...CRISPR components can be delivered and expressed transiently using a standard detergent, Polyethylene Glycol...plant genome. B) The Ti plasmid and helper are transformed into agrobacterium tumefaciens and exposed to...
  14. Technologies Enabled by NanoLuc® Luciferase

    Type
    Blog Post
    Published
    Feb. 8, 2018, 12:17 p.m.
    ...furimazine by Promega’s Chemistry group is a good story (1). From a deep sea shrimp to a compact powerhouse of...cellular analysis products at Promega.     References 1. Hall, M.P., et al. (2012) Engineered luciferase reporter...process known as bioluminescent resonance energy transfer (BRET). The fluor then emits light at a tissue-penetrating... consists of NLuc fused to the more penetrative orange fluorescent protein fusion (OgNLuc). Both fluorescent...for excitation. The result was the cyan-excitable orange fluorescent protein, CyOFP1. CyOFP1 was molecularly...and improved maturation time compared to similar orange fluorescent proteins. In their work, the authors...great imaging tools generate cyan, yellow, green, orange and red fluorescence. The paper reports a wide ...
  15. Finding Your Science Policy Path

    Type
    Blog Post
    Published
    Sept. 22, 2020, 1:15 p.m.
    ...relations, advocacy, and writing legislation (see Figure 1 for career map). The beautiful part of science policy...about science policy as a profession. Figure 1: Science policy can lead you to many paths! For a ...AAAS Science and Technology Policy Fellow at the Veterans Health Administration. “But, seriously, what even...Science and Technology Policy Fellow (STPF) at the Veterans Health Administration, I could never get one straight...variety of backgrounds with technical expertise that ranges from astronomy to bioethics to chemical engineering...happen at the national level within the executive branch or in Congress, or can also happen at the state... early career researchers who have decided to transition out of academia from graduate school or a postdoc...
  16. Microbes: Look, Listen, and Tell

    Type
    Blog Post
    Published
    Aug. 28, 2018, 12:04 p.m.
    ...communication check out these SciComm blog posts. References 1. Bourdeau, Raymond W., et al. "Acoustic reporter genes...topics both interesting and approachable!   The grand finale of visual impressions was delivered by the...
  17. Addgene's Top Blog Posts from 2020

    Type
    Blog Post
    Published
    Dec. 29, 2020, 2:15 p.m.
    ...five methods for extracting DNA without a kit too. 1. Early Career Researcher Toolbox: Free Online Molecular...sharing even broader and began working with tech transfer offices to make reagents available to scientists...
  18. Easing the Protein Purification Process with pCri

    Type
    Blog Post
    Published
    June 19, 2015, 3:08 p.m.
    ...individually or as a complete kit from Addgene. References 1. Goulas, Theodoros, et al. "The pCri system: a vector...contains the MISTIC (membrane-integrating sequence for translation of integral-membrane protein constructs...glycosylate proteins and may recapitulate the post-translational modifications added to proteins in other eukaryotes...includes a special feature for difficult-to-purify membrane proteins. pCri vector pCri-13a, designed for use...protein tag. MISTIC drags tagged proteins into the membrane and may improve expression of proteins that natively...
  19. Six Spooky Science Stories and Halloween at Addgene

    Type
    Blog Post
    Published
    Oct. 31, 2019, 1:06 p.m.
    ...Molecular and cellular endocrinology 215.1-2 (2004): 1-10. PubMed PMID: 15026169. Soo, Rochelle M., et al...ve also carved pumpkins (yes, Blugene made an appearance there too) and shared fascinatingly creepy science...algae cell is just the cell wall and cytoplasmic membrane. Vampirovibrio chlorellavorus will not grown in... the snail, the larvae reach the eyestalk and transform them into a pulsating display imitating a moving...grasshoppers and crickets. When it’s ready to transform into an aquatic adult, it forces its insect host...uninfected grasshoppers, including those linked to neurotransmitter activity and geotactic behavior (Biron et ...
  20. Build Your CRISPR Vocabulary

    Type
    Blog Post
    Published
    July 2, 2024, 1:15 p.m.
    ...proteins, DNA, and RNA used in CRISPR.   Figure 1: Overview of the parts of CRISPR. The bacterial chromosome...target and nontarget DNA strands upstream of the PAM site found in the nontarget strand. Protein Cas: ...sequences and keeping the array organized. Target strand: The strand of foreign DNA that Cas proteins recognize...recognize using an RNA guide. Non-target strand: The paired strand of foreign DNA cut by Cas9, whose sequence... and variable spacer sequences. The array is transcribed and processed into crRNAs, each including one...protospacer-adjacent motif” present in the non-target strand of DNA to be cut, which varies between CRISPR systems...from Addgene!   RNA crRNA: “CRISPR RNAs” are transcribed from the CRISPR array and include a spacer and...
Showing: 421 - 440 of 611 results