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...sharing even broader and began working with tech transfer offices to make reagents available to scientists... Proteins For Molecular Biology Experiments by Jennifer Tsang Chromoproteins are a subset of the fluorescent.... 7. 25 Work From Home Tips for Scientists by Jennifer Tsang These tips were written early on in the...Five DNA Quantification Methods to Consider by Jennifer Tsang The nanodrop vs. spec debate dominates ... Jennifer Tsang...

...and a screening approach, the Jennifer Doudna lab identified three different Cas12a inhibitors. Some of ...hisashii, BhCas12b that is functional at 37 °C but preferentially nicks the non-target DNA strand. The lab then... of stable genomic integration and is easily transferred via conjugation.   Read the paper in Nature... Jennifer Tsang...

...dependent cell lines and any mutations that that confer proliferation advantages will be revealed in the absence... a given mutation will have a different phenotypic effect in a different system. These plasmids can also...well-studied candidates. The possibilities are vast. References Ng, Patrick Kwok-Shing, et al. "Systematic functional...

...first request through Addgene in 2004 allowed the transfer of a plasmid between two academic laboratories...Collection includes over 600 plasmids such as luciferase reporters for gene expression analysis and tools...AAV5, AAV6, and AAV11 Cap proteins. Additionally, transfer plasmids such as empty backbones, a FlpO expression...epitope tags such as HA or FLAG and are fused with different fluorescent proteins. The collection includes ...information. If you are a depositing lab or Technology Transfer Office interested in expanding the availability...

...use in this service.  At launch, we will offer five different serotypes for packaging: AAV1, AAV2, AAV5...the Addgene repository and their choice of five different serotypes.   Figure 1: The process of...that this ordering process will look slightly different from our standard process. We’ll walk you through... Preps will be available for request in three different quantities: 10x 100 µL (1 mL), 25x 100 µL (2.5...

...neuronal populations to consider. To tease apart how different neurons impact a certain output, neuroscientists... populations using viral strategies Combining different approaches can increase the specificity of cell...optogenetic payload in neurons that project to different regions of the brain. A more locally defined set...in their cell bodies. Optical stimulation in a different brain area can then reveal the cells bodies of...share experimental design and data. With these different approaches to open science, we aim to accelerate...

...NmCas9 and St1Cas9. Each ortholog was fused to a different fluorescent protein to create three colors. The...specificity of these orthologs is key: due to differences in the PAM sequences required by each ortholog...specific for telomeric sequences and showed that different fluorescently labeled dCas9 isoforms are efficiently...target sequence. They were also able to label two different pairs of chromosomes using gRNAs specific to sequences...Addgene are excited to see what’s coming next! References Multicolor CRISPR labeling of chromosomal loci...

...the efficiency of Cre recombination varies for different constructs and cell types. Second, Cre may induce...from the standard UAS/GAL4 system is toxic to proliferating cells. A Cre-estrogen receptor ligand binding...enhance genome editing capabilities in Drosophila. References: Multiple new site-specific recombinases for ...for use in manipulating animal genomes. Nern A, Pfeiffer BD, Svoboda K, Rubin GM. Proc Natl Acad Sci USA...PubMed. Reduction of Cre recombinase toxicity in proliferating Drosophila cells by estrogen-dependent activity...

...Dr. Jennifer Doudna and Dr. Emmanuelle Charpentier. I was joined by Addgene Scientist Matt Ferenc (one...especially excited to attend this event because Jennifer did her graduate work one floor above mine in ...system Drs. Dounda and Charpentier met at a 2011 conference and decided to collaborate on what was a “curiosity... science to the non-scientists in the room. He offered the great analogy of comparing the CRISPR/Cas9 ...

...online on Addgene's CRISPR Library Reference page.    References: Genetic Screens in Human Cells Using...GeCKO library, each library has been enriched for different gene targets. These pooled libraries include enrichment...lentiviral libraries and their demonstrated application offer proof-of-principle that CRISPR-Cas9 can be used ...any sequence in the genome. Tips and tricks Wang offers this tip: “It's quite important, at every step ...

...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...

... required for best results. Different targets benefit most from different DNA substitutions, although ...hybrid guides in the comments below! References and Resources References Kim, H., Lee, W., Oh, Y., Kang, S...: The seed, tail, and scaffold sequences have different tolerances for substitution of DNA bases. Created...

...antibodies, and more!   Resources and References   References Coligan, J. E., Dunn, B. M., Speicher, ...blot and immunofluorescence. GST  Glutathione S-Transferase (GST) is a 26 kDa tag which can be isolated with...Nonetheless, this tag can be purified with several different resin types and is a fairly small tag that is ...  Affinity tags vs. other tags There are many different types of tags, including epitope tags (FLAG, Myc...

...tools for your next experiment! References and Resources References Wood, V., et al., Hidden in plain...an endogenous gene. Each trap uses a slightly different approach (described in detail below), but fundamentally...kidneys at a specific developmental stage you could infer that the gene which GFP was monitoring was being... these circumstances, trap methods may be the preferred screening option. Promoter traps Promoter trap...

...specific compounds, links to publication references, and cross-references with cell line catalogs and collections...be adjusted based on query, reference, and shared allele search preferences to help you identify proximal...to learn more, check out the Cellosaurus FAQ! References Lorsch JR, Collins FS, Lippincott-Schwartz J....

...fundamentals. Our mission is to curate a one-stop reference guide for plasmids, so that you can spend less...their artificial nature, lab plasmids are commonly referred to as “vectors” or “constructs.” To insert a gene...Green Fluorescent Protein (GFP) Plasmids 101: Luciferase Monitor the level of a chemical in a particular...plasmid use in the lab. Addgene’s Molecular Biology Reference includes information about molecular cloning, ...a plasmid vector, molecular biology tools and references, and how to maintain your plasmid stocks. The...

... just find one that naturally occurs? This is different than the engineered approach used to make eSpCas9...SpCas9 or GeoCas9 RNPs were incubated in reaction buffer at temperatures ranging from 25-80 °C. Activity...incubated in human plasma diluted with reaction buffer for 8 hours at either 37 °C or 4 °C. Substrate ...gel. SpCas9 is stable when incubated in reaction buffer alone, but has limited activity when incubated ...are available from Addgene. Happy CRISPRing! References Harrington, Lucas, et al. "A thermostable Cas9...

... with a six-year-old boy named AJ Gonzales who suffers from Fibrodysplasia ossificans progressiva (AKA...first met AJ and his family, he did not seem much different than my second son of similar age. When he came...therapeutic antibody that binds Activin A and interferes with inappropriate activin-ACVR1 interactions...superpower for those running on behalf of rare disease sufferers like AJ. As the Blue Lantern Oath says: "In fearful...running on behalf of AJ Gonzales, a young boy suffering from FOP, raising money for NORD for the past ...

...Request service, which offers over 3,000 eligible transfer plasmids and five different serotypes. Not sure...pAAV_hSyn1-SIO-stGtACR2-FusionRed AAV5 Optogenetics Ofer Yizhar New serotype pAAV-CaMKIIa-ChRmine-oScarlet-KV...pAAV-CaMKIIa(0.4)-eOPN3-mScarlet-WPRE AAVrg Optogenetics Ofer Yizhar New serotype pAAV-syn-Flpo AAVrg Recombinase...

...transductions. If you’ve ever wondered how they are different from or similar to the other Ts, we have your ...transduction?  Transduction is the process of transferring foreign nucleic acid into a cell by a viral ...controlled lab usage. Using viral transductions can offer benefits such as tissue-specificity, high efficiency...that you can swap out your virus type to achieve different biological outcomes. For example, some viruses...target cells or organism, some primary cells and differentiated cell types are picky when it comes to transfection...