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We narrowed to 432 results for: sequence

Showing: 91 - 100 of 432 results
  1. Cpf1: A New Tool for CRISPR Genome Editing

    Type
    Blog Post
    Published
    Oct. 14, 2015, 2:30 p.m.
    ...plasmid depletion assay to discover FnCpf1’s PAM sequence requirements. Cpf1’s preferred PAM is 5’-TTN, ...in both genomic location and GC-content. After sequencing and searching for cellular RNAs important for...post-HDR, repair templates should remove the PAM sequence. Comparing Cpf1 and Cas9 on-target and off-target...orthologs, Cpf1 efficiency varies widely with gRNA sequence. Both groups used multiple methods to examine ...single and double mismatches throughout the 23-base sequence. Double mismatches ablated Cpf1 activity, except... they were present in the 3’ end of the target sequence (bases 19-23). Cpf1 is also sensitive to single...23. Accordingly, the 3’ end of the gRNA target sequence does not have an essential function in Cpf1-mediated...
  2. 22 Hot Plasmid Technologies from 2014

    Type
    Blog Post
    Published
    Jan. 6, 2015, 5:21 p.m.
    ...Timer protein fused to the mitochondrial targeting sequence of cytochrome c oxidase subunit VIII, so that ...exchange and re-use of existing elements. DNA sequences for a desired component are cloned into Golden...channelrhodopsins – Chronos & Chrimson Through de novo sequencing of 127 algal transcriptomes, as well as further...for CRISPR gRNA validation Selecting a gRNA sequence that effectively targets your gene/region of interest...their gRNAs. The first step is to clone the target sequence in between two fragments of EGFP in pCAG-EGxxFP...The EGFP fragments contain 482bp of overlapping sequence that direct Homologous Recombination (HR) or Single... Cas9. If the gRNA effectively cuts the target sequence, the plasmid undergoes HR or SSA to reconstitute...
  3. Plasmid-based Recombinant Monoclonal Antibodies: What They Are and Why You Should Be Excited About Them

    Type
    Blog Post
    Published
    May 4, 2021, 1:15 p.m.
    ...expressed from a plasmid or from an integrated sequence in a stable cell line. The genes encode the heavy...recombinant antibodies, you first need to know the sequence. Scientists are getting better and better at identifying...mass spectrometry to determine the amino acid sequences of the antibodies and then synthesize the genes...be converted into recombinant form through DNA sequencing of the line and subsequent cloning of the antibody...Hybridomas are much tougher to ship, often lack sequence data, and may genetically drift over time. Antibodies...research tools, it is shocking that the plasmids and sequences for antibodies are not shared. For instance, through...Complete De Novo Assembly of Monoclonal Antibody Sequences. Sci Rep 6: . https://doi.org/10.1038/srep31730...
  4. Plasmids 101: Terminators and PolyA signals

    Type
    Blog Post
    Published
    March 31, 2016, 2:30 p.m.
    ...polyadenylation? The role of the terminator, a sequence-based element, is to define the end of a transcriptional... A predicted conserved secondary structure and sequence conserved Rho-independent termination annotation...eukaryotic mechanism which requires a consensus sequence for the addition of a poly(A) tail, the addition...Polymerase III, for example, relies on a specific sequence and RNA secondary structure to induce transcript...terminators (SV40, hGH, BGH, and rbGlob) include the sequence motif AAUAAA which promotes both polyadenylation...transcription due to the presence of additional helper sequences (2-3). As alluded to above, termination and polyadenylation...PMC360476. Gil A, Proudfoot NJ. Position-dependent sequence elements downstream of AAUAAA are required for...
  5. Mapping the 4D nucleome with CRISPR/Cas9

    Type
    Blog Post
    Published
    Aug. 11, 2015, 2:30 p.m.
    ...previously been adapted to fluorescently label a sequence matching its gRNA, facilitating the live study...orthologs is key: due to differences in the PAM sequences required by each ortholog, a gRNA designed for...dCas9 variants using gRNAs specific for telomeric sequences and showed that different fluorescently labeled... are efficiently directed to the proper target sequence. They were also able to label two different pairs...pairs of chromosomes using gRNAs specific to sequences on chromosomes 9 and 13. They next turned their...
  6. Antibodies 101: Antibody Engineering and Directed Evolution

    Type
    Blog Post
    Published
    Aug. 5, 2025, 1:15 p.m.
    ...instead of forcing sequence diversity using error-prone polymerases, you force sequence diversity using ...primers to get full sequences. In the end, you’ll have a full-length antibody sequence, but with random ...Antibody engineering is the modification of antibody sequences and structures to affect their function. Usually...random errors can give you new and unexpected sequences. Degenerate primers Using degenerate primers is...variety of degenerate codons (different codon sequences that code for the same amino acid) for various... is usually employed to mutate whole antibody sequences, degenerate primers can be designed to selectively...option. In gene shuffling, you chop up your target sequences into fragments, typically using a DNase. Then ...
  7. Fluorescent Tagging of Endogenous Genes with SapTrap

    Type
    Blog Post
    Published
    Oct. 12, 2017, 2:26 p.m.
    ...a genomic site specified by a guide RNA (gRNA) sequence. Users can design gRNAs to induce the break at...directed repair pathway, a new user-defined DNA sequence (like GFP) can be inserted at the DSB. CRISPR ...oligos or synthetic DNA for the desired gRNA target sequence, as well as the 5’ and 3’ homology arm repair ...sites- the first site accepts the sgRNA target sequence for U6 promoter expression and the second site...event, and a variety of connector modules (linker sequences between the tag and homology arms). Digestion ...will insert the desired genetic tag and marker sequence into the targeted loci. The selectable marker ... the culture medium. Any number of regulatory sequences, including protein enhancers and repressors, can...
  8. PITChing MMEJ as an Alternative Route for Gene Editing

    Type
    Blog Post
    Published
    Feb. 23, 2016, 3:30 p.m.
    ...double-stranded break. HDR copies the sequence from a repair template with flanking sequence homology for error-free...microhomology and the retention of a single microhomology sequence. For more mechanistic details on HDR and NHEJ,...double-stranded break yield precise deletion of the sequence between the microhomologies.MMEJ has certain advantages...to HDR, but it is completed using much shorter sequence homologies. Abbreviated protocol for PITCh...puromycin resistant cells Step 5: PCR amplify and sequence the locus to verify correct GFP-puro insertion...the GFP-Puro cassette into the FBL locus. Upon sequencing of puromycin resistant clones, they found that...
  9. Choosing a CRISPR Nuclease: Site Accessibility, Specificity, and Sensitivity

    Type
    Blog Post
    Published
    Nov. 5, 2019, 1:28 p.m.
    ...which genomic sequences can be targeted by the Cas9. This is determined by the PAM sequence recognized by...Cas9, spCas9 from Streptococcus pyogenes, this sequence is 3’-NGG. But Cas9s found in other species can...can recognize a variety of different PAM sequences. Researchers have also used experimental evolution ...previously unavailable. Figure 1: The PAM sequence that the Cas nuclease recognizes determines site... displayed the ability to target multiple PAM sequences (NG, GAA, and GT), greatly increasing the number...
  10. Comparing Cas9 to NgAgo: Can the Argonautes Best CRISPR?

    Type
    Blog Post
    Published
    June 9, 2016, 2:30 p.m.
    ...other CRISPR enzymes, NgAgo does not require a PAM sequence, so users should have much more flexibility in...et al. tested if NgAgo preferred certain guide sequences - using 5 guides/gene for 10 genes, they did not...represent a key advantage over Cas9, for which gRNA sequence can greatly affect editing efficiency. Smaller...invading genome from “recovering” its original sequence. If you’re looking to disrupt gene function via...repair after base excision would alter the target sequence and preclude future HDR, which could lower HDR...
Showing: 91 - 100 of 432 results