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We narrowed to 1,050 results for: ins;

Showing: 361 - 380 of 1050 results

  1. Drew Endy Introduces the Biobrick Public Agreement Plasmid Collection

    Type
    Blog Post
    ...translation of RNA to make proteins. That's central to everything that goes on inside a cell. Until we get ...of enough sensor domains. Ultimately, we'll need a couple thousand or so sensor domains for everything ...DNA systems capable of storing data and computing inside living cells. He's also a co-founder of the BioBricks...BioBricks The BioBrick Foundation's Linda Kahl explains the Addgene collaboration this way: "Addgene is...strategy that organizes how we start the work, and it begins with the central dogma - replication of DNA, transcription...and expensive. There's the promise that we could instead have things like peptide or RNA aptamers that act...

  2. With an Eye Towards the Future, We Look Back at the March for Science

    Type
    Blog Post
    ...for Science.  Cold and overcast with intermittent rains, it was weather befitting of the ominous political...Science and Engineering at Rensselaer Polytechnic Institute. He also studies energy markets in his spare time...cause breast cancer and infertility or to argue against unnecessary clinic regulations, evidence-based ...issues hit hardest. According to the Guttmacher Institute, most women of reproductive age live in a state... how planets form around young stars and the instruments we use to study them. You can follow her at alexandrazgreenbaum.wordpress.com.... I worried that, because we were speaking out against legislators and because the march had been so well-publicized...scientists – including global warming skeptics – insisted that more data and research funding are critical...

  3. Getting to Know Expansion Microscopy

    Type
    Blog Post
    ...now available. In this post, we’ll review the inspiration behind ExM, how it works, and some of the limitations...most SRM techniques also require specialized instruments and technical expertise, limiting their accessibility...a straightforward answer to the space problem. Instead of imaging smaller, what if we just made the sample...chemical dyes, and genetically encoded fluorescent proteins (Gambarotto, et al. 2019; Tillberg, et al. 2016...adapted for detecting nucleic acids as well as proteins (Klimas, et al. 2023; Wassie, et al. 2019). Perhaps...et al (2021) Expansion microscopy provides new insights into the cytoskeleton of malaria parasites including...Saad O, Bewersdorf J (2020) Light microscopy of proteins in their ultrastructural context. Nat Commun 11...

  4. An Introduction to Adenovirus

    Type
    Blog Post
    ...Harrach, 2014). Given that the early genes encode proteins essential to initiating the whole process – such...used to house a recombinant sequence (transgene) instead.    Although the late genes are usually present...absent, and the late genes (and their structural proteins, which would encapsidate new virions) are not ... is transient due to the fact that AdV surface proteins (especially fiber’s knob domain, and hexon), as... as well as other intracellularly-exposed proteins and downstream cellular events, all recruit strong ...sense of what AdVs are about – and we hope that it inspires further use of existing vectors, as well as research...resources References Bauzon, M., Castro, D., Karr, M., Hawkins, L. K., & Hermiston, T. W. (2003). Multigene expression...

  5. Cpf1: A New Tool for CRISPR Genome Editing

    Type
    Blog Post
    ...classified as a type V CRISPR system. Like Cas9, Cpf1 contains a RuvC-like endonuclease domain, but it lacks ...off-target editing efficiency. Kim et al. and Kleinstiver et al. characterized genome-wide editing efficiency... to single mismatches, but variably so, with Kleinstiver et al. reporting that Cpf1 can tolerate mismatches...essential function in Cpf1-mediated editing, as Kleinstiver et al. saw no decrease in Cpf1 activity with ... are indicated below each graph. Figure from Kleinstiver et al., 2016. Cpf1’s strength may lie in ...activity than that previously observed with SpCas9. Kleinstiver et al. suggest that AsCpf1’s off-target rate ...eSpCas9 and SpCas9-HF1. Both AsCpf1 and LbCpf1 ribonucleoproteins (RNPs) failed to induce off-target editing...

  6. QC Sequencing Technologies at Addgene

    Type
    Blog Post
    ...next-generation sequencing (NGS). However, Sanger sequencing remains useful for small sample sizes and shorter regions...occasionally still use Sanger sequencing to confirm an insert that is repetitive or otherwise hard to sequence...time-consuming, depending on the library prep and instrumentation used.  Here at Addgene, we sequence every plasmid...high-throughput compatibility. However, there are some instances where we use long-read sequencing or Sanger sequencing...DNA or RNA is pulled through the pore via motor proteins. When each nucleotide passes through the nanopore...nanopore, the electrical current recorded by the instrument changes. Base-calling software can then identify...SPAdes, Shovill, apc, and NOVOPlasty. The pipeline contains three de novo assemblers, so if one fails to generate...

  7. Advancing Biology with Zebrafish: Genetic Tools for Developmental Studies and More

    Type
    Blog Post
    ...days inside the mother, the zebrafish is an ideal system to observe embryogenesis live. The origins, divisions...implemented in zebrafish. Developmental biology insights using lineage tracing in zebrafish To highlight...lineage tracing approaches that led to important insights in developmental biology. Microscopy-based lineage...example, neuronal activity can be tracked in whole brains of swimming, actively learning larvae, providing...resistance (so far) to facile CRISPR/Cas9-mediated insertion of foreign DNA. Despite these caveats, several...highlight how these advantages can translate into insights in developmental biology, and advances in this...zebrafish behavioral studies Download the fluorescent proteins 101 eBook Read our plasmids 101 blog series Resources...

  8. Hot Plasmids Spring 2024

    Type
    Blog Post
    ... In this iteration, the size of the lentiviral insert was minimized to reduce recombination and avoid...transcriptase enzymes, inhibition of host cell proteins, and modifications to the pegRNA. The Britt Adamson...nucelocapsid protein, one of the virus’s most abundant proteins and a critical component for viral genome packaging...-LV [+M], negative control) were immunoblotted against Anti-SARS-CoV-2 Nucleocapsid Protein antibodies...middle panel). Samples were also immunoblotted against vinculin as a loading control (right panel). Image... of ssAAV, a targeting sequence of miR124T was inserted into the vector to silence transgene expression...editing, and delivery of disease-relevant large proteins. They demonstrated REVeRT in various contexts ...

  9. Viral Production at Addgene

    Type
    Blog Post
    ...of the viral capsid proteins are analyzed. The abundance of viral capsid proteins as a fraction of total...relative stoichiometric ratios of the viral capsid proteins VP1, VP2, and VP3. Samples of viral preparations...subjected to gel electrophoresis. Viral capsid proteins VP1, VP2, and VP3 are shown relative to the total.... Three to five days later, cell cultures are inspected for sterility. Transducibility Some viral vectors...virus from Addgene, read our detailed recipient instructions for next steps. Plan an experiment using our...plasmid in the viral preparation by performing PCR against unique regions of the transfer plasmid.   Lentivirus...

  10. Data Freedom: The Expansion of Data Sharing in Research Publications

    Type
    Blog Post
    ...form that can be understood by others, balanced against how often such data is likely to be accessed. Adding...not averse to making data available, but there remains concern about the extra work this may entail.  ...parsed by someone other than the actual author. Instead, selected images are said to be representative ...another issue of proprietary data formats. Many instruments store raw data in formats that require specific...supported/readable. Is the author or their host institution expected to provide data in formats exported ...integrate datasets with their resultant figures. Instead of providing a “dead end” figure or table, clicking...natural, albeit unintentional, tendency to work against transparency. This opens science to charges of ...

  11. Advice on Career Paths and the Green Card Process for International Researchers and Entrepreneurs

    Type
    Blog Post
    ...cap: institutions of higher education nonprofit entities related to or affiliated with institutions of ...application on their behalf.  If an individual obtains a cap subject H-1B (last year less than 30% of ...exempt from the cap if the applicant works at institutions of higher education, a related or affiliated... lead role or critical role at a prestigious institution: This criterion is consistently under scrutiny...to self-petition. You need the support of your institute to do this one. Universities will usually only...professors. Casseus Law has seen that research institutions are willing to sponsor postdoctoral researchers...application is reserved for long term employees of the institute. For the EB-1B, you need to prove 3 threshold ...

  12. The CRISPR Software Matchmaker: A New Tool for Choosing the Best CRISPR Software for Your Needs

    Type
    Blog Post
    ...contributed by guest blogger Cameron MacPherson at the Institut Pasteur CRISPR software and the piñata effect ... group (Biology of Host-parasite Interactions, Institut Pasteur, Paris) that changed genome editing in... perspective, the Plasmodium falciparum genome contains only 0.66 million targetable NGG PAM sites whereas...and on-targeting likely more efficient.  These insights are hard to appreciate without computational support...each item changes from what the reviewers so painstakingly assessed to something a bit more representative...tools The goal of this post is to provide some insight into available CRISPR software tools, what problems... is already covered in the published articles. Instead, I have broken down the tools into the individual...

  13. New Norepinephrine Indicators: nLightG and nLightR

    Type
    Blog Post
    ...that red fluorescent proteins tend to be less sensitive than green fluorescent proteins. nLightR did perform... corresponding pixel-wise ΔF/F0 heatmaps. White insets indicate surface expression of the indicators over...based on alpha-1a adrenergic receptor; nLightG contains circularly permuted green fluorescent protein ... alpha2-AR antagonist, nLight sensors are not. Instead, they are blocked by alpha1-AR antagonist. This...and resources References Feng, J., Zhang, C., Lischinsky, J. E., Jing, M., Zhou, J., Wang, H., Zhang, ...More resources on the Addgene blog Fluorescent proteins 101: Fluorescent Biosensors Which Fluorescent ...

  14. 3 Tips to Improve HDR Efficiency for CRISPR Editing in Human Cells

    Type
    Blog Post
    ...NHEJ) pathway, leading to nonspecific nucleotide insertions, dele­tions or other mutations, referred to as...sin­gle-stranded oligodeoxynucleotide (ssODN), which contains the intended sequence changes to be incorporated...over 90% of the HDR edited alleles had unwanted insertions/deletions, therefore making those alleles useless... allele is accurately edited, the other likely contains unwanted indels. Following this observation, we...cut-to-mutation distance, the mutation may only be inserted at one of the alleles, but not the other – the...equally mixed with another ssODN template that contains the same CRISPR/Cas-blocking mutation but not ...currently a Professor for Neurobiology at the Institute for Stroke and Dementia Research, Ludwig-Maximilians-University...

  15. Plasmids 101: Positive and Negative Selection for Plasmid Cloning

    Type
    Blog Post
    ...For example, if the DNA you’re inserting into the plasmid backbone contains a kanamycin resistance cassette...your inserted DNA) and further screening will help you determine if the plasmid backbone contains your...Selection is straightforward in cases where the inserted DNA includes an antibiotic resistance marker. ... the critical amino acid). Many common E. coli strains used for cloning are auxotrophic for specific amino... found on the original plasmid and either the insertion of a DNA fragment within the gene or loss of the...

  16. Hot Plasmids - October 2022

    Type
    Blog Post
    ... of light-gated potassium channelrhodopsins, named Kalium channelrhodopsins (KCRs), from a fungus-like...-2P Novel class of light-gated potassium channelrhodopsins Myc-tag antibody anti-c-Myc [9E10] now available...   Novel class of light-gated potassium channelrhodopsins by: Mike Lacy New work from the labs of Mingshan... attempts to engineer potassium-selective channelrhodopsins. HcKCR1 has a maximum absorption of 540 nm...plasmids here!   Govorunova EG, et al. Kalium channelrhodopsins are natural light-gated potassium channels...than 50 antibodies target neuroscience-related proteins, but we recently added several broadly useful ...

  17. Plasmids 101: Gene, enhancer, and promoter trapping

    Type
    Blog Post
    ...species-specific) or a selectable marker. Each insertion line can then be isolated and screened. Depending...constructs that contain splice acceptors. They require insertion into an intron of a gene, where they can be spliced...promoter traps. While this system does not require insertion into an exon, like promoter traps, it will still...enhancer traps are the top trap – they don’t require insertion in a highly specific gene region and they don’...integrated into it. Enhancer traps do not need to be inside of a gene’s open reading frame, in fact, they can...decided on the type of trap, there are many ways to insert your construct to generate a collection of monitored... Wood, V., et al., Hidden in plain sight: what remains to be discovered in the eukaryotic proteome? Open...

  18. History of CRISPR Cas - A tale of survival and evolution

    Type
    Blog Post
    ...Cas as a powerful and adaptive defense strategy against life-threatening viruses. Evolving to survive ...clustered repeat sequences operated as a safeguard against bacteriophages did not come to light until 2007...re-exposure (2, 3). More specifically, specialized Cas proteins snip the foreign DNA into small fragments approximately...paste them into the CRISPR sequence. Separate Cas proteins then express and process the CRISPR loci to generate...out these functions using slightly different Cas proteins and PAM sequences. A total of eight evolutionarily...Cas systems provides powerful lines of defense against invading phages. Rising to the challenge - Evolution...Genome engineering and future directions CRISPR/Cas inspired genome editing was initially described by Cong...

  19. Viral Vectors 101: Parts of the AAV Transfer Plasmid

    Type
    Blog Post
    ...which contains the structural and packaging genes, the adenoviral helper plasmid which contains the proteins... to replicate,  and the transfer plasmid which contains the viral genome. In today’s blog post, we’ll...palindromic nature, and high GC content. This instability can cause partial loss of an ITR during routine...constructs in recombination-deficient bacterial strains, such as Stbl3s. ITR loss can be detected by restriction...include a reporter like GFP, some smaller CRISPR-Cas proteins such as SaCas9, CRISPR gRNAs, or your gene of ...

  20. RUBY-Red Siliques

    Type
    Blog Post
    ...techniques require you to select against the presence of a transgene instead, which can’t be done if your ...antibiotic/herbicide resistance and fluorescent proteins. Selection using resistance genes usually involves...are currently used in these situations to select against CRISPR positive plants, but screening these can...purple plant pigments found in all other plants, anthocyanins. Figure 1: An adult plant expressing...different transformation events likely due to insertional effects in the genome. (Bottom panel, right) ... editing, then green offspring can be selected instead of red ones. Other innovative uses of RUBY are ...
Showing: 361 - 380 of 1050 results