... not linearly related to power, the conclusions reached at high power may not translate to real applications...widefield imaging fluorophores are excited with relatively low light levels (for a prolonged time). Other...application (Goedhart et al, 2012). The third issue relates to the environment of the fluorescent protein. ...

... TAK 1, an enzyme that controls apoptosis and regulates transcription. Without TKA1, cells proliferate...cancer as a broad phenomenon and not only as an isolated disease. While the tumor may seem to take center...microRNA transfer: A mechanism of environmental modulation of hepatocellular cancer cell growth." Hepatology...resources on the Addgene blog Read our cancer related blog posts Learn about our cancer collection pages...

...The modularity of antibodies means that it is relatively easy to physically divide up the different regions...you to use just a fragment of the antibody in isolation from another portion. For example, Fab fragments...but not the Fc region (more on when that might be later). Find scFv plasmids at Addgene Depending on how...fragments intended for use as primary antibodies are relatively uncommon. Though, if you want to use Fab fragments...

...mechanism? Where is the control happening? Is the regulation of an exogenously introduced gene or over the...generate a frameshift mutation that will permanently ablate protein expression. If you need the ability to...different amounts of tetracycline. Tetracycline regulation is reversible (when the drug is removed expression... These control systems function at the post-translational level, unlike most of the other mechanisms described...

... with post translational modifications. One of the most common of these is 2’-O-methylation, where a methyl...once you’ve chosen a gRNA and modification(s) Congratulations! You’ve picked your perfect guide; now check...Spatiotemporally Controlled CRSIPR-Cas-based Genomic Regulation. ACS 6, 5, 695-703 (2020). https://pubs.acs.org...

... that underlie complex regulation in biological systems. The CombiGEM platform provides a means to create.... CombiGEM-CRISPR: The marriage of two simple platforms CRISPR has revolutionized how we decode the genome...Wong et al., 2016). With CombiGEM and CRISPR platforms now being integrated, we look forward to the realization...

...samples through our lab using barcoded tubes and plates. The critical pieces of information for a given...100 µl of glycerol stock to each of 2 96-well microplates (identical copies, see image above). We then ... database of over 2000 primers. Two 96-well PCR plates are prepared with the primer stocks for forward...shipped along with their corresponding glycerol plate on dry ice to the sequencing provider. Each sequencing...

...donor-acceptor pair and a change in FRET efficiency correlates with a change in the distance and/or orientation...available. Fortunately, several excellent reviews have collated data from various papers to make the decision ...conformation of the probe. More on these biosensors later on). Experiments using intermolecular FRET probes...simultaneously would further increase the amount of correlated information available from a cellular process...

...acquired divergent functions due to mutations accumulated over time? Undergraduates can help to answer ...If the phenotype is corrected, students can be relatively confident that the gene from the test species...the S. cerevisiae met deletion strains and then isolate transformed strains on media that lack uracil, ... MET genes to grow.) Students then use replica plating to determine if expression of MET/Met genes from...

...pluripotency marker expression and response to LPS stimulation, respectively. Primary cell type Gene targeted... a fluorophore or tag. To utilize HDR, a donor template containing the desired sequence flank by homology...Nanoblades which carries a gRNA, Cas9, and a HDR donor template DNA can be generated by incubating Nanoblade particles...facilitated HDR with either a ssDNA or dsDNA donor template. In vivo editing of mouse zygotes and mice with...

...glycosyltransferase genes and other proteins related to cellular glycosylation. Get the library at Addgene CasRx...requires the much less efficient double stranded templates, rather than the more efficient single-stranded...cellular protein. They used CRISPR with a ssODN template to introduce the small wrmScarlet11 which is less...

...pockets. They allow researchers to identify and isolate very specific biological targets. However, as popular...identical antibodies (See Fig 1.). rAbs are a relatively new technology that takes advantage of DNA sequencing... NOT align with the atlases/literature and is unrelated to the target protein, we categorize the antibody...strong signal. However, exposure time and its relationship to signal depend on what you’re comparing your...

...embark on or continue their careers in science-related fields. In particular, two recent events have the...note is a ruling in August by the National Labor Relations Board to allow graduate students who work as teaching...university and alterations to the student-university relationship, along with, of course, union dues. Time will...+ adjustments for regional cost of living and inflation) and benefits that were laid out by a 2014 National...

...typically used (e.g., use 5 mL medium on a 10 cm plate). By reducing the culture volume into which the ...transfection and should give rise to a surviving population of approximately 20–50% of the packaging cells...vector using the harvested viral solution as a PCR template. Regardless of the type of virus you’re working..., and allow you to standardize your experiments later. Stay tuned to the Addgene blog and be sure to check...

...barely fits into AAV when you add in a gRNA and regulatory elements. To solve this problem, the Zhang lab...throughout the 23-base sequence. Double mismatches ablated Cpf1 activity, except when they were present in...future edits. In contrast, since Cpf1 cleaves relatively far away from the PAM, NHEJ might retain the ...mechanism. To prevent new editing post-HDR, repair templates should remove the PAM sequence. Many research ...

...genetic tool for researchers to conditionally manipulate gene expression in vivo using site-specific recombination...orientation, the SSR will excise the DNA fragment. By manipulating the number, orientation, and type of target ...morphology, and circuit mapping of a targeted neuronal population.    Figure 2 (modified from Schnutgen...study the physiology or behavior of certain cell populations.  Acknowledgement:Through a partnership with...

...where I gained invaluable experience working on and later chairing the Advocacy Committee. I’m now furthering...more. Having met many people at that conference, I later became involved with the NPA beyond the meeting....more productive and makes it easier to build relationships. Nonetheless, the committees would not function..., I had to learn how to develop new working relationships with these individuals who often had different...

...protein or its role in a disease, researchers often isolate proteins of interest and examine them using biochemical...protein, it's important to validate its function relative to the untagged, wild-type protein. You may, for...the protein of interest and then analyzing the relative colocalization of their fluorescent signals and...One should also be aware of additional problems related to the properties of FPs themselves. These can ...

...Thursday, or, at the latest on Friday. It’s best to split cells before the plates are more than 80-85%...Benjamin Franklin)! It’s good practice to label your plates and/or flasks with your name, date, the cell line...disorganization, apoptosis, and gene expression disregulation on HeLa cells." Journal of applied phycology27.6...

...each gene, we needed to design guide RNAs, donor templates and sequencing primers for quality control. At... taken up to a month to design a single 96-well plate for HDR that satisfy all requirements. To alleviate...guides by CFD score, and it mutates HDR donor templates to avoid re-cutting when needed. It gives you ...the standard information that goes into a 96-well plate and comes out of it. Biotech companies are known...