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Showing: 41 - 60 of 134 results
  1. Lentiviral Guide

    Type
    Guide
    ...that can be included in transfer plasmids include: Tet- or Cre-based regulation and fluorescent fusions ...cellular determinant is LEDGF/p75, a lentiviral tethering protein that recruits the pre-integration complex...
  2. Plasmids 101: Common Lab E. coli Strains

    Type
    Blog Post
    ...Δ(mcrA)183 Δ(mcrCB-hsdSMR-mrr)173 tetR F'[proAB lacIqZΔM15 Tn10(TetR Amy CmR)]  Note: Inactivating ... streptomycin Tn10   Confers resistance to tetracycline Additionally, Table 2 provides a quick reference...recombine.  F' proA+B+ lacIq ∆(lacZ)M15 zzf::Tn10 (TetR) ∆(ara-leu) 7697 araD139 fhuA ∆lacX74 galK16 galE15...supE44 λ-relA1 Δ(lac-proAB)/F' proAB+lacIqZΔM15 Tn10 (TetR) TOP10 Streptomycin MC1061 derivative. General...galE15 galK16 rpsL(StrR) endA1 λ- XL1 Blue Tetracycline Blue/white screening and routine cloning, nalidixic...lacIq Δ(lacZ)M15] hsdR17(rK- mK+)  XL10 Gold Tetracycline and Chloramphenicol High competency cloning ...
  3. Fluorescent Proteins 101: Photoactivatable Fluorescent Proteins

    Type
    Blog Post
    ...PA-FPs come in 2 flavours- monomeric and tetrameric. Tetrameric PA-FPS are better for whole cell imaging...UV-Violet Cyan/ Green >2,000 Medium 490/ 511 Kaede Tetramer UV-Violet Green/ Red ~2,000 High 572/ 580 tdEos...UV-Violet Green/ Red N/A High 573/ 584 KikGr Tetramer UV-Violet Green/ Red >2,000 High 583/ 593 mKikGR...Monomer Blue Dark/ Red 20 Low 572/ 610 FP595 Tetramer Green Dark/ Red 70 - 1000 Medium 590/ 600 ...to preserve cellular structures (0.5-1% osmium tetroxide). These conditions destroy most PA-FPs, but, in...
  4. Live and Let Dye: Self-Labeling Protein Tags

    Type
    Blog Post
    ...a look at some popular self-labeling tools: Tetracysteine: The first reported chemical labeling tag, from...Commercial ligands available Ease of use Tetracysteine (Cys4) 15 Biarsenical dyes (FlAsH, ReAsH...labeling specificity than short peptide tags like tetracysteine (Jing & Cornish, 2011). HaloTag and SNAP-tag...functional. In some cases, a small peptide tag like tetracysteine might be the only option that doesn’t disrupt...options for CLIP-tag and very few TMP-tag or tetracysteine labeling dyes.  If reaction speed is a priority...
  5. CRISPR 101: Multiplex Expression of gRNAs

    Type
    Blog Post
    ...by L-arabinose and anhydrotetracycline (aTet), respectively. pMAZ-SK contains an aTet-inducible gRNA and...self-destruction" after induction with L-rhamnose and aTet. CRMAGE is much more efficient than traditional ...plasmids from this paper at Addgene. 3. Sakuma, Tetsushi, et al. “Multiplex genome engineering in human...
  6. What's New in CRISPR - March 2020

    Type
    Blog Post
    ... RNA-guided methylcytosine editing by TET1 by co-delivering TET1 and protein factors for linking methylcytosine...., 2019. Fusing epigenetic modifiers such as TET1 with inactive Cas enzymes can alter gene expression...
  7. Plasmids 101: Antibiotic Resistance Genes

    Type
    Blog Post
    ...permeability Bactericidal 10-100 ug/mL Tetracycline tetracyclin Binds 30S ribosomal subunit; inhibits...in foil if a light-sensitive antibiotic like Tetracycline is used. Keep in mind that some E. coli strains...
  8. In Vivo Biotinylation of Bacterial Fusion Proteins

    Type
    Blog Post
    ...so, theoretically, saturated avidin could form tetramers of biotinylated protein. However, oligomerization... GE Life Sciences) or bio-layer interferometry (Octet, Pall ForteBio). Tips for using pMal-T-Avi-His/BirA...for plasmid version 2.0? Instruments such as an Octet may require less in vivo-biotinylated protein (total...
  9. Bright Monomeric Fluorescent Proteins: mNeonGreen, mTFP1, and mWasabi

    Type
    Blog Post
    ...fluorescent protein that was derived from the tetrameric yellow fluorescent protein (LanYFP) from the ...fluorescent protein mTPF1 is a monomeric version of the tetrameric cyan fluorescent protein from the coral Clavularia...approximately 484 variants, including some potential tetramer-breaking mutations. The library was then screened...
  10. Visualizing Translation at the Single Molecule Level

    Type
    Blog Post
    ...NLS-MS2-RFP) the reporter mRNA, which contains the tethering sites for the fluorescent proteins and is driven...of the PP7 and MS2 coat protein binding sites to tether many copies of the FP-coat protein fusions to their...these papers did. Since the SunTag-based system tethers mRNAs to the plasma membrane, it’s not appropriate...
  11. Visualizing Genomic Loci with CRISPR-Sirius

    Type
    Blog Post
    ...development. They inserted an octet of MS2 hairpins into the gRNA tetraloop and went through subsequent ...They found that aptamer insertion in the gRNA tetraloop (a four base hairpin loop motif within the gRNA...
  12. Mouse Modeling, Part 1: Genetically Engineered Mice

    Type
    Blog Post
    ...either induce or repress Cre expression using TetON or TetOFF systems. So now hopefully creating a genetically... the cell can occur. Similar systems include tetracycline or doxycycline mediated activation of Cre to...
  13. Better Dyeing Through Chemistry & Small Molecule Fluorophores

    Type
    Blog Post
    ...FlAsH, ReAsH) and a short genetically encoded tetracysteine (Cys4) peptide tag could be used to label proteins... lipoic acid ligase, biotin ligase, phosphopantetheinyltransferase) – These enzymes catalyze the covalent...1c). Click chemistry (e.g., transcyclooctene–tetrazine)– Nonnatural amino acids can be incorporated into...
  14. Viral Vectors 101: Optogenetic Tools

    Type
    Blog Post
    ...photoswitchable tethered ligands (PTL), and photoswitchable, orthogonal, remotely-tethered ligands (PORTLs... secondary signaling pathways. Photoswitchable tethered ligands hold the ligand in close proximity to ...
  15. Special Delivery: Fluorophore Targeting for FRET Studies

    Type
    Blog Post
    ... nonfluorescent until they bind a 6-residue tetracysteine tag (sequence: CCPGCC) that can be inserted ...interest, resulting in a C-terminal fusion of a tetracysteine tag. In addition, since these tags are so small...et al. "Hairpin structure of a biarsenical− tetracysteine motif determined by NMR spectroscopy." Journal...
  16. What's New in CRISPR - May 2019

    Type
    Blog Post
    .... coli genome-wide CRISPR inhibition Covalent tethering of DNA template to Cas9 SECURE base editors Nme2Cas9...genome-wide CRISPR inhibition library Covalent tethering of DNA repair template to Cas9 Homology-directed...
Showing: 41 - 60 of 134 results