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We narrowed to 755 results for: rest

Showing: 301 - 320 of 755 results

  1. Tips for Titering Your Lentiviral Preps

    Type
    Blog Post
    ... based off of p24 quantification tend to be overestimates since they can include free p24 and defective...assay, titering via measurement of viral RNA can overestimate the amount of infectious virus in a prep as ...physical titer, there is a risk that they may underestimate viral titer as these assays cannot distinguish...integration events, reducing the possibility of underestimating the viral titer. The main drawback of this ...

  2. No Llamas Required - Synthetic Nanobodies Against Membrane Proteins

    Type
    Blog Post
    ...select for sybodies targeting a membrane protein of interest using the Sybody Generation Toolbox and commercially... (for purification purposes) protein target of interest, the protocol goes through 3 major steps to select...exchange (FX) cloning technique which uses Type IIS restriction sites (Geertsma, 2013). Once the phagemids are...bind strongly and specifically to the protein of interest. The Seeger lab used the ELISA technique described...

  3. Polymerase Chain Reaction Overview and Applications

    Type
    Blog Post
    ... (5’) and downstream (3’) of the DNA region of interest. Primers are crucial for this process as DNA polymerases...times to exponentially replicate the target DNA of interest. This entire reaction used to be done manually...used in molecular cloning to create a plasmid of interest, for detecting the presence of an insert or piece...End point PCR or just PCR Amplify a region of interest  Molecular Cloning Site-directed mutagenesis...

  4. PCR Applications for Copy Number Variation Assays

    Type
    Blog Post
    ...allowing the reference sequence and the gene of interest to be amplified in the same reaction. Taqman’s...contains a primer and probe set for both the gene of interest and the reference sequence. At the end of the ...the number of positive droplets for the gene of interest and reference gene, copy number can be determined... your experiment?  Complexity of the gene of interest Some gene sequences are harder to amplify and...

  5. Plasmids 101: Protein Expression

    Type
    Blog Post
    ...transcribe, translate and modify your protein of interest. Modified proteins can then be extracted from ...is quite simple; DNA coding for your protein of interest is inserted into a plasmid expression vector that...propagate, are induced to produce your protein of interest, and then lysed. Protein can then be purified ...from Northeastern University and is particularly interested in cell signaling and communication. She loves...

  6. xCas9: Engineering a CRISPR Variant with PAM Flexibility

    Type
    Blog Post
    ...adjacent to the targeted sequence at the locus of interest. SpCas9’s 3’ NGG PAM occurs frequently in GC-rich...progress we’ve made, there is still a need for and interest in enzymes with shorter PAM sequences and/or broader...permits quick, large-scale mutation of the gene of interest. They created a selection phage (SP) to carry ...-3.13. To test xCas9 3.0-3.13, Hu et al. first restored catalytic residues D10 and H840. To ensure that...

  7. Fluorescent Tagging of Endogenous Genes with SapTrap

    Type
    Blog Post
    ...is to replace the genomic copy of your gene of interest with a fluorescent protein fusion. CRISPR genome...scientists to tag and light up endogenous genes of interest to better understand normal protein function. ...vectors:  1) a gRNA vector that targets the gene of interest, 2) a plasmid to specify the reading frame of ...flanked by long regions of homology to the gene of interest to promote homology directed repair after a CRISPR...

  8. Truncated gRNAs for Regulating Gene Expression

    Type
    Blog Post
    ...that directs them to the promoter of a gene of interest, they have been shown to dramatically alter levels... transcriptional start site (TSS) of a gene of interest, it induces potent gene expression with no genetic...of the transcriptional start site of a gene of interest, Cas9 forms a steric block that prevents RNA polymerase...the length of gRNAs targeting different sites of interest thus represents a straightforward means of exerting...

  9. When is a Monomer not a Monomer? The Top Three Ways Your Favorite Fluorescent Protein Oligomerizes in Cells

    Type
    Blog Post
    ...You're OK. However, if you fuse your protein of interest (POI) to GFP to study the protein's behavior in...reticulum (OSER) whorls. 2)A dimerizing protein of interest fused to a dimerizing FP has potential to form...protein concentrations. An imperfect solution is to restrict imaging analysis to cells expressing the lowest...Department of Anatomy and Structural Biology. His interests include the quality control of secretory proteins...

  10. Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards

    Type
    Blog Post
    ...initial reversal drive cannot restore the exact original sequence, it can restore the original protein-coding...using a recoding strategy; a subsequent drive can restore the wild-type sequence (save for the residual sgRNAs...immunizes it against the first drive. Laboratories interested in building candidate gene drives intended for...

  11. Course-Based Undergraduate Research Experiences (CUREs)

    Type
    Blog Post
    ...fifth repeat Nobel Prize winner in history. Interestingly, he also adds to the disproportionately large...allowing every student to work on any topic of interest. The result was a positive experience for the ...generate new knowledge that will be of genuine interest to other researchers in their field. Indeed, sharing...Duboue et al., 2022), as they increase student interest in scientific career paths while also broadening...

  12. CRISPR 101: Ribonucleoprotein (RNP) Delivery

    Type
    Blog Post
    ...guide RNA (gRNA) targeting your genomic site of interest. This is commonly performed by transfecting cells...complex with a targeting gRNA, to your cells of interest. Cas9 RNPs are capable of cleaving genomic targets...CRISPR components to their experimental systems of interest. Using this method can alleviate many issues that...Hempstead is a Senior Scientist at Addgene.  Andrew's interests include genome engineering and microbiology.   ...

  13. Tips for Screening with Yeast Two Hybrid Systems

    Type
    Blog Post
    ... interaction trap), genes encoding proteins of interest(POI’s) are fused to TAs and DBDs (see Figure 2a...those cells where binding between the proteins of interest has occurred. Although the original Y2H systems...way, proteins that interact with a molecule of interest (the ‘bait’) can be ‘fished out’ for further study... random genomic fragments from the organism of interest, or a defined cDNA library (e.g. the entire proteome...

  14. Plasmids 101: Protein tags

    Type
    Blog Post
    ...technical challenges depending on their protein of interest. After several decades of trying to address these... protein? It is not generally in a cell’s best interest to overexpress a protein. Energy and cellular ...many tags and fusion proteins to your protein of interest would eventually get ridiculous (you generally...Life Sciences. Addgene pages and blog posts of interest: Which Fluorescent Protein Should I Use? Plasmids...

  15. What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program

    Type
    Blog Post
    ...but there are few genetic tools currently for terrestrial frogs. Cnidarian-Dinoflagellate symbionts (Virginia...food. They have chemical pathways generating interesting drug-like compounds especially cardenolides which...traits with good genetic mapping morphology and interesting behaviors. There is diversity in the social bonds...from other plants and are unusual enough to be interesting biologically. They have economic importance as...

  16. Antibodies 101: Reading a Flow Plot

    Type
    Blog Post
    ...If you’re interested in studying immunology or subpopulations of cells, you’ll soon find yourself encountering...markers to identify your specific cell population of interest. The markers you use, and the order you use them...like in Figure 3 above, until the population of interest has been successfully identified and isolated..../doi.org/10.5500/wjt.v8.i1.23 Jhunjhunwala, S., Aresta-Dasilva, S., Tang, K., Alvarez, D., Webber, M.,...

  17. Plasmids 101: Shuttle Vectors

    Type
    Blog Post
    ... will your cells actually express your gene of interest? Many promoters are species-specific, so you’ll... to worry about the expression of your gene of interest in both systems you are shuttling between. For...probably don’t need it to express your protein of interest. However, you do still need a species-compatible...sometimes called transfer vectors. The gene of interest is cloned into a shuttle vector for transfection...

  18. Plasmids 101: E. coli Strains for Protein Expression

    Type
    Blog Post
    ...inactivated native restriction/methylation system. This means the strain can neither restrict nor methylate...expression of T7 RNAP from the genome; does not restrict methylated DNA fhuA2 lacZ::T7 gene1 [lon] ompT...RNAP is then available to transcribe the gene of interest from a T7 promoter on the plasmid. Many commercial...

  19. SARS-CoV-2/COVID-19 Detection Methods Based on CRISPR/Cas

    Type
    Blog Post
    ...is then used to detect the amplified region of interest. Cas13 uses a complementary crRNA sequence to ...based detection of SARS-CoV-2 genetic material (CREST) Sensitivity: 10 copies of RNA per microliter Time...Resources Many thanks to our guest bloggers Shravanti Surest from Iowa State University. Shravanti Suresh is...Sashital Lab, Iowa State University. She is actively interested in science communication and enabling access ...

  20. Antibodies 101: Introduction to Immunofluorescence

    Type
    Blog Post
    ... ask questions like: “Where does my protein of interest live within a cell,” “Does this disease change...Blotting, but it allows you to visualize a target of interest within an intact cell, tissue, or, in some cases...IF, the primary antibody targets the antigen of interest but is not attached to a fluorescent molecule,...products that all claim to target your protein of interest. Thankfully, there are a number of websites compiling...
Showing: 301 - 320 of 755 results