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...plasmid sample has a mix of different-sized multimers, you may even see different sets of bands on the gel... us at [email protected]. Resources and References References Bacolla A, Wang G, Jain A, Chuzhanova NA...multimerization has been observed to occur in many different kinds of plasmids, taking many forms (Levene, ...from BiteSize Bio for more information on how different plasmid conformations run on an agarose gel). ... tips. Portions of this figure were made with BioRender.   Grow plasmids in recombinase-deficient...Plasmids 101 eBookAddgene's Molecular Biology ReferenceAddgene's Restriction Digest Protocol More resources...

...efficacy of different materials so that we could have discussions about the pros and cons of different fabrics...about the difference between airborne and aerosolised droplet transmission and how different fabrics and...sexual and reproductive health.    References and Resources References Drummond, C., & Fischhoff, B. (2017...used to stay up past my bedtime, poring over my grandparents’ medical textbooks by torchlight under the covers...

...in 1983. The differences between gram positive and negative bacteria is due to differences in cell wall...minoring in studio arts photography.  References and resources References Silhavy, TJ., Kahne, D. & Walker ...negative and positive bacteria are permeable to different classes of antibiotics. The classification system...system is incredibly helpful in visualizing differentiations between bacteria, leading to safer medicine...diagnostics/22612-gram-stain Hardy, J. Gram’s Serendipitous Stain. https://hardydiagnostics.com/wp-content...

...view previous versions.  Currently, all submissions also require a DOI referencing primary literature, and...the time) began an effort to collate some of the current “best” FPs, and I collaborated with him on a web-based...that one might like to store about FPs than is currently represented at fpvis (complete spectral information...sequences and lineages, FRET efficiencies, additional references, etc...) and a more robust database structure...address).  One may also simply attach important references that serve to further characterize a protein ...plenty of room for improvement and elaboration.  Current projects include incorporation of biosensors, protein...

...cells (Ma et al., 2015). To do so, they fused a different fluorescent protein to various Cas9 variants, ...either MS2, PP7, or boxB) that each recruits a different fluorescent protein (BFP, GFP, or RFP) to the ...green, or red readout. But gRNAs containing two different hairpins will produce a secondary color (yellow...allows for simultaneous visualization of sites on different chromosomes in living cells, the system requires...they chose an intergenic DNA region (IDR3) as a reference loci to measure inter-locus distances of loci ...sgRNA-Sirius-4X(MS2-PP7) showing recruitment of different fluorescent proteins. (B) CRISPR-Sirius used to...try. Find CRISPR-Sirius plasmids at Addgene. References Ma, Hanhui et al. “Multicolor CRISPR labeling...

... the best method for titering AAV? Is there a difference in titer results between ddPCR and qPCR? A: At...curve and somewhat more reliable quantitation. Differences in sample treatment across methods can affect...  Q5: What is the efficiency of co-delivering different AAV particles into the same cells in vivo? A: ...give some insight into codelivery efficiency at different doses. See Figure 4 in this paper for more information...epithelial cells of the blood brain barrier we would currently recommend PHP.V1 or AAV-BR1. We recommend you ...IACUC committee.  Animal Models Q9: Is there any difference in transfection efficiency when delivering these...injections? A: We have not observed any appreciable difference in AAV transduction efficiency between retro-...

...for your experimental needs.     References and resources References Bradbury ARM, Trinklein ND, Thie ...experiments, you may be curious about all of the different kinds of antibodies that are available. One common...monoclonal antibody production. Image created with BioRender.com.   The antibody-producing B cells that are...heterogenous mixture of antibodies that recognize many different epitopes on the same protein - are more likely...impacts the specificity, avidity, and number of different antibodies produced by the hybridoma. Image from... Trimmer JS, Görnemann J, Glanville J, Wolf P, Frenzel A, Wong J, Koh XY, Eng H-Y, Lane D, Lefranc M-P...

...new features to the tool. Resources and References References Adler, B., Trinidad, M., Bellieny-Rabelo...CasID, to help facilitate direct comparison of different enzymes. CasPEDIA is meant to be a constantly ...plasmids containing that enzyme, and embedded in the References lists on every page you can find direct links...design, etc.). With this feature, you can compare different Cas enzymes to make sure you are getting the desired...the winner!).   Fig. 3 – Comparison of different Cas enzymes using CasPEDIA. Adapted from Adler...Phylogeny tool allows users to browse entries by the current phylogenetic nomenclature and discover orthologs...

...discussed are compiled for reference below. Happy virus making!  References and Resources Kulanayake,...promoter and terminator regions and are slightly different in sequence. Both LTRs do share common repeat ...there are bonus components to these vectors that aren’t reflected in the common components outlined above...Adeno-associated virus AAV’s elements are quite different from gamma-retrovirus, but they perform very similar...which allows for altered tropism of AAV to target different tissue or cell types. AAV also requires some back...will outline the common features as well as the differences within their viral elements. Gene expression ...

...spread the word as new protocols come out! References Noren, C. J., Anthony-Cahill, S. J., Griffith, M...incorporation of an unnatural amino acid in translation (Noren et al., 1989). In the late nineties, this was developed... But this focus on development, along with the inherent trickiness of using and optimizing GCE, led to...site-directed mutagenesis, many researchers new to GCE aren’t able to successfully complete their experiments...uncommon to find protocols that require reagents which aren’t broadly or easily available, so you may find yourself... they’d also love scientist interested in, or currently using, GCE to reach out to them and let them know...

...desired mutations. The assays you will use aren’t that much different from conventional duplexed primer probe...mutation of your favourite gene, there are several different methods available. Thankfully, there are many ...primer to amplify the target locus, as well as a reference probe designed to bind at an unedited site distal...are completely “blind” to this very important difference (Figure 3). If you are interested in harnessing... mutations be out of frame! Scott Findlay is currently a Postdoctoral Fellow at the University of Alberta...biology. Follow him on Twitter @AnotherLabRat.     References 1. Miyaoka, Y. et al. Isolation of single-base...

... actually surprising to us that there aren’t a hundred different versions of this out there. Addgene: ...Addgene. For more details on the plasmids that are currently available along with detailed protocols, go to...and it’s already looking like it’s making a big difference. We can now look at many more transcription factors... this for tagging any protein in all kinds of different assays, not just transcription factors. The second...cells. It was made artificially. That means you aren’t getting any background or cross-reacting. We’ve... They could also switch from FLAG to GFP or a different epitope. Addgene: Do you have any additional tips...

... away from the bench, I have worked for seven different organizations in a variety of science policy roles...opportunities. But even through all my roles and my current work as a AAAS Science and Technology Policy Fellow...cultural, and political. Science policy looks differently depending on how and where you pursue it. It ...Action Items:  Start a career journal during your current job and note what makes your heart sing, what makes...information may help you determine what parts of your current job you want to keep or change and can inform your...you do science policy? Just like there are many different types of science policy careers, there are many...NSPN maintains a great resource guide including conferences, societies, and outreach groups. Grab a virtual...

...perspective of the current. Although genome editing technologies have brought a renaissance in the field of...fiction, was also a trained biologist. This is apparent in his work The Island of Dr. Moreau (1896) where...In the 1960s, Har Gobind Khorana, Marshall W. Nirenberg, and Robert W. Holley cracked the genetic code...TALENs more specificity and a broader substrate preference than the ZFNs.   Genetic Engineering Era: Post...also transcended into the world of SciFi. This is apparent in the use of the word ‘CRISPR’ for anything associated...your research Browse plasmids for base editing References Anzalone AV, Randolph PB, Davis JR, Sousa AA,...pangenesis to the rediscovery of Mendel. Comptes Rendus de l’Académie des Sciences - Series III - Sciences...

... probes, LDR can reliably detect single-base differences. The original creators of this technique visualized.... The structural/mechanistic reason for this differential is not known for certain, but may have to do...Sixteen separate pools were prepared, each with a different complement strand covering all 16 possible NN ...each possible pairing resulted in a product of a different length, with products identifiable and quantifiable... in the enzymology of DNA repair enzymes.     References 1. Shuman, Stewart, and Christopher D. Lima. ...superfamily of covalent nucleotidyltransferases." Current opinion in structural biology 14.6 (2004): 757-...PMC4737175. 22. Liu, Pingfang, Artur Burdzy, and Lawrence C. Sowers. "DNA ligases ensure fidelity by interrogating...

...use temperature to denature and renature the dsDNA. Upon renaturation, you will generate DNA duplexes ...at how variable Cas9-expression was across the different cells (Figure 3).   Figure 2: Cas9 expression...publication. Pro-Tip: 1. Use multiple gRNAs to target different regions of your gene. I used existing BRAF gRNA...gRNA viruses. There are a few reasons to target different regions of the gene with multiple gRNAs, but the...comparing the phenotypes of multiple gRNAs. Targeting different regions of the gene is also useful in case the...that would co-migrate on a gel) instead of two different sized digestion products (which could be easier...your way to making new scientific observations. References 1. Rago C, Vogelstein B, Bunz F. Genetic knockouts...

... hand and use them to easily test different antibodies or different signaling molecules. Many labs find...proteins are represented in orange. Created with BioRender.com.    How do secondary antibodies work?  ...are readily available conjugated to a number of different signaling molecules. With the direct approach,...possible, or ensure that the primary antibodies are different species and/or isotypes. For highly multiplexed...has introduced new options for increasing signal strength.  For the time being, though, secondary antibodies...generated in goat against rabbit immunoglobulins. References and Resources More resources on Addgene’s blog...

...lots of fun building and clicking. References and Resources References Devaraj, N. K., & Finn, M. G. (2021...first time. But biology is complicated — so many different parts and species, with components quickly losing...alongside criteria for Click Biology. Created with BioRender.com.   Principles of Click Biology Physical ...proteins to any kind of small molecule probes with different functionalities, such as fluorescence or triggering...through rapid covalent coupling. Created with BioRender.com.   Table 1: A handful of Click Biology tools...deposited at Addgene in multiple formats: for use in different organisms, targeted to particular compartments...

... the retina using viral tools.   References and Resources References Pillay, S., et al. "An essential ...and can be specifically targeted to a number of different cell types even when systemically administered...capsids allow the virus to infect (or not infect) different cell types with some specificity. There are a ...will lose expression quicker than terminally differentiated, non-dividing cells.   Figure 2: ...Goz Ayturk with edits and updates from Addgenies Karen Guerin and Susanna Stroik. Didem Goz Ayturk is a...subretinal injections of neonatal mouse eyes at two different ages." Retinal Degenerative Diseases. Springer...

...were also tested in different plasmid backbones that varied in size or carried different genes. In these ...promoters incorporate feedback loops such as the incoherent feedforward loop (iFFL). In general, iFFLs use...number. Moreover, gene copy number is affected differently by growth rates when a gene is expressed from...Segall-Shapiro et al. showed nearly no position-dependent differences in gene expression. On the other hand, slow growth...promoters can eliminate variability between the different components. When your pathway needs precise fine-tuning...levels, give these stabilized promoters a try. References 1. Segall-Shapiro, Thomas H., Eduardo D. Sontag...