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  1. Hot Plasmids Spring 2024

    Type
    Blog Post
    ...vector 2; BD, binding domain; SDS, splice donor site; SAS, splice acceptor site; pA, polyadenylation signal...
  2. Deep Dive: qPCR

    Type
    Blog Post
    ... https://doi.org/10.1016/j.bdq.2017.11.001.Bustin SA; Benes V; Garson JA; Hellemans J; Huggett J; Kubista...
  3. CRISPR Guide

    Type
    Collection
    ...GAA, or GAT SpCas9-NG 3' NG Staphylococcus aureus (SA); SaCas9 3' NNGRRT or NNGRR(N) Acidaminococcus sp...Tn7-like transposases found in diverse species of microbes. However, synthetic dCas9-transposase fusions...recruits the transposase proteins to the target location in the genome, where the transposase then carries...Figure 7: Overview of CRISPR transposases Browse Plasmids: CRISPR transposases CRISPR Recombinases and Integrases..., and recombinases, with Cas enzymes. CRISPR Transposases Transposon systems like piggyBac or Tn7 allow... elements into the genome. CRISPR-associated transposases ( CASTs , developed by the Feng Zhang lab ) ...) combine the large-scale capacity of transposases with the precise DNA-targeting of CRISPR-Cas systems...
  4. Antibody Guide

    Type
    Collection
    ...two most common types of ELISAs are direct or sandwich ELISAs. For direct ELISAs, an antigen or protein ...differentiate between proteins. HRP is also used in ELISAs, which only measure a single antibody signal. Here...Quantification methods, such as western blots or ELISAs, are used to quantify relative amounts of protein...standard curves to quantify exact amounts of proteins. ELISAs quantify a single protein per assay and typically...verified to contain your protein of interest (in ELISAs, the standard curve can serve as the positive control...
  5. Sleeping Beauty Awakens for Genome Engineering

    Type
    Blog Post
    ...contains the transposase gene (red) for expressing the transposase enzyme.2.) The transposase enzyme is ...Beauty transposase gains its name from the fact that it was recreated from a defective transposase found...plasmid is then degraded by the cell.4.) The transposase creates a double strand break in the DNA and ...system is comprised of 2 components: 1) an SB transposase, the enzyme required for catalysis of transposition...found in fish. This transposase has been discovered in the genomes of many different fish species in a variety...synthesized by fusing and modifying various extinct transposases. Improvements have been made since then by increasing...2009, Zsuzsanna Izsvak’s lab screened many SB tranposase variants for hyperactivity in mammalian cells...
  6. PiggyBac-ing Through the Genome Editing Field

    Type
    Blog Post
    ... components, a transposon and a transposase. The piggyBac™ transposase facilitates the integration of ...controlled by titrating the transposase to transposon ratios. High ratios of transposase to transposon result... that of the wildtype piggyBac™ transposase or hyperactive transposase mutants [7], it is generally not...plasmids, when combined with a source of piggyBac™ transposase (available from a licensed distributor) allow...cannot distribute plasmids with the piggyBac™ transposase itself, please read on to learn more about this...importantly for this technology, however, is that the transposase also enables the excision of the transposon in...virus-free. This is achieved using the piggyBac™ transposase, which facilitates direct integration of the ...
  7. Neurodegeneration Plasmid Collection

    Type
    Collection
    ...ALS Sascha Martens 187830 pFastBac_Dual_GST-TEV-EGFP-TBK1 TBK1 GST, TEV-mEGFP-GG Linker ALS Sascha Martens...mCherry ALS Sascha Martens 190192 pET-Duet1-6xHis-TEV-OPTN OPTN His, TEV, mCherry ALS Sascha Martens 190486...ALS Sascha Martens 198037 pFastBac_Dual_GST-TEV-EGFP-TBK1-E696K TBK1 GFP, GST, Tev P10 ALS Sascha Martens...GST, Tev P10 ALS Sascha Martens 198428 pGST2-GST-TEV-OPTN OPTN TEV, GST tac ALS Sascha Martens 199205 pBMN-HA-TBK1... TBK1 HA ALS Sascha Martens 199206 pBMN_HA-TBK1 (kinase dead - D135N) TBK1 HA ALS Sascha Martens 199207...GFP, FKBP CMV ALS Sascha Martens 208875 pFastBac-Dual- GST-TEV-TBK1 TBK1 polH ALS Sascha Martens 209078 ...199207 pBMN_HA-TBK1 (E696K) TBK1 HA ALS Sascha Martens 199399 Anti-PINK1 [N4/49R] PINK1 CMV Parkinson's James...
  8. Plasmids 101: Using Transposons in the Lab

    Type
    Blog Post
    ...the SB transposase, SB100X, is ~100-fold more efficient compared to first generation SB transposase (Mátés...module with the crRNA, 3) a transposase complex made up by three transposase proteins (TnsA, TnsB, TnsC...DNA site to another. This protein is either a transposase or a reverse transcriptase, depending on the ... HIV, replicate. Class I TEs do not encode a transposase enzyme.  Class I TEs are considered replicative...., 2021. To mobilize a transposon, first the transposase enzyme binds the transposon’s long terminal repeats...footprint is left behind. When the transposon-transposase complex finds its target site, it integrates,...the protein they need to move around, either a transposase or a reverse transcriptase. Non-autonomous transposons...
  9. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

    Type
    Blog Post
    ...their limited programmability: depending on the transposases involved, they insert either randomly, or at...combining the DNA integration capabilities of transposases and the target programmability of CRISPR-Cas...Sternberg group, and CAST (CRISPR-associated Transposase) by the Zhang group. Mechanism of CRISPR-transposons...DNA-targeting module together with the crRNA.  Three transposase proteins (TnsA, TnsB, TnsC). The donor DNA (aka...RNA-DNA base pairing. Separately, TnsABC forms a transposase complex with the mini-transposon, excises it ...proteins (Fig. 1A, bottom), and require only two transposase proteins (TnsB and C). While requiring fewer ...CRISPR-transposons within the CRISPR toolbox RNA-guided transposases are exciting new additions to the growing CRISPR...
  10. CRISPR-based Genome Editing Systems For Editing in E. coli

    Type
    Blog Post
    ...pTnsABC expresses the transposases TnsA, TnsB, and TnsC pQCascade expresses the transposase TniQ, the Cas proteins...chromosomal integration using CRISPR-associated transposases” or MUCICAT. Here, we’ll describe each of these...system which is based on the CRISPR-associated transposase system, INTEGRATE, is best for multicopy chromosomal...Anhydrotetracycline (aTc) induces expression transposases leading to increased integration frequency. ...Chromosomal Integration Using CRISPR-Associated Transposases. ACS Synth Biol 9:1998–2008. https://doi.org...
  11. Antibodies 101: Epitope Availability

    Type
    Blog Post
    ...conformation changes. Several types of assays, such as ELISAs and Westerns, frequently denature the proteins ...absorbing of the proteins to the microtiter walls for ELISAs and a more accurate separation of proteins by mass...Monoclonal antibodies suitable for a Western or ELISAs may therefore often be specific to denatured versions...validated for Western blots, but find one validated for ELISAs, it has a good chance of also working for a Western...
  12. Advice on Career Paths and the Green Card Process for International Researchers and Entrepreneurs

    Type
    Blog Post
    ... quota of 85,000 total H-1B visas approved each fiscal year: 65,000 visas plus 20,000 reserved for individuals...postdoc. Foreign national researchers who require visas, permanent residence or citizenship to continue ...degree or higher degree. These numerically limited visas are referred to as “cap” subject H-1Bs. The H-1B...the life sciences community obtain their working visas, permanent resident green cards and citizenship....
  13. Great Results Start with Great Standard Curves

    Type
    Blog Post
    ...resources on the Addgene blog Antibodies 101: ELISAs The Four ELISAs and When to Use Them A Control for All ...viruses; food allergy labs use standard curves with ELISAs to measure allergen concentrations in food; and...BCA assays have linear trendlines while those for ELISAs and other enzymatic assays are sigmoidal. Once ...
Showing: 21 - 40 of 91 results