We narrowed to 860 results for: fer
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TypeBlog PostPublishedJune 20, 2017, 2:30 p.m....used a solution of cell culture medium, which is buffered and contains the pH indicator phenol red. We froze...permeable to CO2 at low temperatures. We tested two different types of tubes: the ones we use to store lentivirus...also using the thawed virus within 24 hours. References 1. Murphy BM, Swarts S, Mueller BM, van der Geer...
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The Power Behind NGS Plasmid Validation: seqWell
TypeBlog PostPublishedApril 19, 2017, 3:25 p.m....hundreds of different plasmids from a single Illumina MiSeq® run. As shown in Fig. 2, below, differences in input...constructs like plasmids. The plexWell™ workflow also offers a highly efficient NGS-based alternative to Sanger... -
How to Lead a Great Meeting
TypeBlog PostPublishedFeb. 9, 2016, 3:30 p.m....sure to thank everyone for their participation and offer encouragement for the next steps (see “action items...employee’s workload, updates on current projects, and offer feedback. The employee should ask for input on projects...-size-fits all. Feel free to play around with different strategies and find out what works for your organization... -
Plasmids 101: Mammalian Vectors
TypeBlog PostPublishedMarch 25, 2014, 3:15 p.m....blog post we will discuss how mammalian plasmids differ from their bacterial counterparts, including how...selection markers are listed below: Name Gene Conferring Resistance Cell Types* Mode of Action** Working.... This can be confusing since the neo/kan gene confers G418 resistance; however, like gentamicin, neomycin... -
A Deep Dive into BioBuilder
TypeBlog PostPublishedOct. 11, 2017, 1:44 p.m....’s classrooms,” BioBuilder answers the call by offering a variety of educational programs all focused ...opened in August 2017. This flexible teaching space offers STEM programming, workshops, and customized programs...point into further STEM exploration. Further offerings for both STEM teachers and STEM-loving students... -
A Quick Guide to a Career in Software Product Management
TypeBlog PostPublishedNov. 24, 2020, 2:15 p.m....explaining more of her role, which eventually led me to transfer to her team and begin my product management (PM... part of my job is getting to talk to so many different people! I communicate with customers, software... get software product management internships, preferably on teams that run within the agile framework ... -
Viral Vectors 101: The AAV Retrograde Serotype
TypeBlog PostPublishedApril 27, 2023, 1:15 p.m....that pathways projecting to the inferior colliculus (IC) are differentially transduced when using the retrograde...significantly updated in 2023 by Jason Nasse. References 1. Tervo, D. Gowanlock R., et al. "A designer... -
Viral Vectors 101: Viruses as Biological Tools
TypeBlog PostPublishedMarch 21, 2023, 1:15 p.m....nature, viruses infect cells and organisms (which we refer to as hosts) via viral particles, the functional...deliver cargo, it’s important to understand their differences to choose the best one for your experiment. ...Here to Find Viral Vector Resources at Addgene! References and Resources 1. Roe T, et al. “Integration of... -
How Addgene Creates Content
TypeBlog PostPublishedNov. 17, 2022, 2:15 p.m.... ideas come from social media conversations, conferences, and questions our scientific support staff receives...line with Addgene style. Fig. 2: Reference image (left) provided to our graphic designer ...constantly reviewing the resources we currently offer to identify gaps and add to them as techniques evolve... -
Why and how to start studying chromatin (with Addgene's help)
TypeBlog PostPublishedJune 12, 2018, 11:40 a.m....components are still there in real life. Certainly referring to any DNA within the context of a nucleus as ...chromosomal domains, or how stretches of DNA on different chromosomes interact with each other. Chromatin... Note that histone genes frequently have many different variant names, not all of which can be listed ... -
Cas13d: Small RNA-targeting CRISPR enzymes for transcriptome engineering
TypeBlog PostPublishedMay 3, 2018, 1:48 p.m....have taken the CRISPR world by storm. Like RNA interference, these enzymes can knock down RNA without altering...multiple RNA regulating methods: small hairpin RNA interference, dCas9-mediated transcriptional inhibition (...their tools available to the broader community. References Konermann, Silvana, et al. “Transcriptome Engineering... -
Developing a cold tolerant E. coli using specialized chaperones
TypeBlog PostPublishedJan. 28, 2020, 2:35 p.m.... of interest). Mesophilic microbes are highly preferable (and successful) as host systems since their ...to guess. Think about it like winter tires in different conditions: the more flexible rubber of winter...reagent repositories and the myriad facilities offered by them which help foster a more productive and... -
Multiplex Genome Editing with CRISPR-Cpf1
TypeBlog PostPublishedMay 9, 2017, 2:12 p.m....can lead to variable expression levels due to differences in copy number. And there are the usual transfection...Method Delivery Method Advantages Disadvantages References Yamamoto Lab Golden Gate Assembly transfection...multiplexing, leave them in the comments below. References 1. Zetsche et al. "Multiplex Gene Editing by ... -
REPLACR Mutagenesis: Replacing In Vitro Recombination Methods
TypeBlog PostPublishedFeb. 10, 2016, 3:30 p.m....synthesis, and multifragment assembly methods are preferred. No such restriction applies to deletions; using...common methods for site directed mutagenesis References 1. Trehan, Ashutosh, et al. (2016). “REPLACR-... on Addgene.org Browse Our Molecular Biology Reference Pages Choose Your Perfect Plasmid Backbone Find... -
Back to Bacteria: CRISPR gRNA Multiplexing Using tRNAs
TypeBlog PostPublishedJune 2, 2015, 6:06 p.m....expression, PTGs will likely be adaptable to many different biological systems. Although Xie et. al characterized...in plants, PTGs will likely work well in many different biological systems. Size is also a factor; the...technology, leave them in the comments below. References Boosting CRISPR/Cas9 multiplex editing capability... -
RANbodies: Reporter Nanobody Fusions
TypeBlog PostPublishedApril 10, 2018, 12:56 p.m....difficult for an individual lab to produce - Hybridomas offer an alternative and renewable source of monoclonal... their use. Each RANbody is detectable by two different tags: a reporter and an HA tag. The reporter comes... link to its sequence in the comments below. References Sanes, J.R., & Yamagata, M. (2018). Reporter-... -
Visualizing Protein Turnover In Situ
TypeBlog PostPublishedJan. 16, 2018, 3:20 p.m....overexpressed from a plasmid but overexpression may interfere with the system. Another method for studying protein...whether or not the tags influence behavior. A conference and a breakthrough! During my graduate studies...you can contact her at [email protected]. References 1. Dieterich, Daniela C., et al. "In situ visualization... -
Supporting Rare Disease Research with the 2020 BeHEARD Awards
TypeBlog PostPublishedSept. 8, 2020, 2 p.m....newly independent faculty member studying sex differences in thoracic aortic disease,” Prakash says. In..., the lab hopes to capture the signalosome of different receptors upon stimulation. “To study cellular... Jennifer Tsang... -
Giving gRNAs a Facelift - Synthetic and Beyond
TypeBlog PostPublishedOct. 20, 2022, 1:15 p.m....experiment moving. Happy editing! References and Resources References Hendel, A., Bak, R., Clark, J. et...used in CRISPR-Cas9 experiments – the “gRNA” – suffers from the same issues as your experimental RNA. ... -
RaPID Detection of RNA-protein Interactions
TypeBlog PostPublishedAug. 16, 2018, 12:40 p.m....affect protein binding patterns. Hereditary Hyperferritinemia-Cataract Syndrome (HHCS), a disease characterized...the Iron Response Element (IRE) RNA motif of the ferritin light chain RNA transcript. IRE motifs are bound...The RaPID plasmids are available from Addgene! References Ramanathan, M., Majzoub, K., Rao, D.S., Neela... -
Antibodies 101: Affinity Reagents
TypeBlog PostPublishedApril 14, 2022, 1:15 p.m....bispecific, meaning that each scFv can target a different antigen; binding of each can be either simultaneous... a scientist looking for that perfect fit! References and Resources Additional resources on the Addgene...AddgeneBrowse our recombinant antibody plasmid collection References Grumezescu, A. M. (2018). Drug targeting and ... -
Choosing the B(right)est Fluorescent Protein: Aggregation Tendency
TypeBlog PostPublishedJune 15, 2017, 2:30 p.m....dTomato) that promote interactions between the FPs interfere with native interactions, preventing proper localization...papers should be used with caution, since the difference between studies is substantial (e.g, the poor...conclude, we recommend that you try a couple of different fluorescent proteins when protein tagging is the... -
Enhancing CRISPR Targeting Specificity with eSpCas9, SpCas9-HF1, & HypaCas9
TypeBlog PostPublishedDec. 16, 2015, 3:30 p.m....mutations). Although the precise mutations were different than those found in eSpCas9, the effect on specificity...and/or therapeutic settings. Will combining the different mutations found in each of these great tools further...continued improvements in genome engineering! References 1. Slaymaker, Ian M., et al. "Rationally engineered... -
New Tool for Lineage Tracing: The ClonTracer Library
TypeBlog PostPublishedSept. 22, 2015, 2:30 p.m....replicates would have different labels - i.e. they would stochastically arise from different cells throughout...development of combination therapies. References 1. Hyo-eun, C. Bhang, et al. "Studying clonal... -
Plasmids 101: Cre-lox
TypeBlog PostPublishedJan. 13, 2015, 3:47 p.m....because it “causes recombination” (although later referred to as the “cyclization recombinase”), is a 38 ...same type, but are not cross-compatible. Using different lox site variants allows Cre to catalyze more ...cre-dependent techniques? Let us know in the comments! References 1. Bacteriophage P1 site-specific recombination... -
Adeno Associated Virus (AAV) for Cell and Gene Therapy
TypeBlog PostPublishedNov. 7, 2017, 1:59 p.m....their mutations corrected, and the T-cells were transferred back into the infants. Almost all patients have...population. These pre-existing antibodies can interfere with virus-cell interactions and seriously hinder... cure research and science communication. References 1. Gaspar, H. B., S. Howe, and A. J. Thrasher... -
Viral Vectors 101: Virus Safety
TypeBlog PostPublishedJune 22, 2023, 1:15 p.m....dividing up the essential components of a virus into different plasmids. For a retroviral system this looks like... like the genetic cargo in one plasmid (the transfer plasmid), the envelope (Env) gene on a separate plasmid...Env, Gag, and Pol genes are not encoded in the transfer plasmid, the component that physically integrates... -
CRISPR in the Clinic
TypeBlog PostPublishedNov. 2, 2023, 1:15 p.m....updated in 2023 by Susanna Stroik. References and Resources References Yuxuan Wu et al. "Correction of a...frequency isn’t high enough to make a physiological difference, then the treatment will not work in a meaningful... -
High Complexity Golden Gate Assembly with NEB’s DAD
TypeBlog PostPublishedAug. 1, 2023, 1:15 p.m....base or 4-base overhangs, and with a variety of different enzymes and cycling conditions (see Table 1). ... cycling 3-base PaqCl®, 1x T4 DNA Ligase Buffer 37-16 °C cycling 4-base PaqCl, 1x NEBridge... and don’t forget to ask DAD for some help! References Potapov, V., Ong, J. L., Kucera, R. B., Langhorst... -
Plasmids for Endogenous Gene Tagging in Human Cells
TypeBlog PostPublishedApril 6, 2017, 1:02 p.m....methods flood the cell with protein, which can both interfere with a cell’s normal function and result in a ...portal. The plasmids should be functional in many different human cell types, and while most of the genes ...Allen Institute website at alleninstitute.org. References 1. Roberts, Brock, et al. "Systematic gene tagging... -
Hot Plasmids: Winter 2025
TypeBlog PostPublishedMarch 11, 2025, 1:15 p.m.... tomato plants that inherited an edited gene to confer resistance to the herbicide chlorsulfuron (Homo...want a negative-going GEVI that can be used in different illumination regimes with fast activation kinetics... a YFP-tagged G protein and a NanoLuc® (Nluc) Luciferase-fused detector that specifically binds to active... -
Magnetic Control of Proteins: More than a Dream
TypeBlog PostPublishedSept. 24, 2024, 1:15 p.m....Find the MagLOV plasmid here! References and resources References Duret, G., Polali, S., Anderson,...just be an artifact and eliminate sources of interference, but the result persisted. (Even better, multiple... -
Light Sheet Fluorescence Microscopy
TypeBlog PostPublishedJuly 16, 2015, 2:30 p.m....spinal tract, CST, spinal cord and cranial nerve afferents labelled with a AAV8 expressing eGFP under the...sample and captured the reflected light using a different objective lens oriented perpendicular to the plane...Find plasmids from the Tsoulfas lab here. References: H. Siedentopf, and R,. Zsigmondy. (1902) Ann... -
Transgenic Organisms, Cas9 Gene Drives, and Appropriate Safeguards
TypeBlog PostPublishedMay 22, 2015, 4:58 p.m.... lines with compound autosomes are completely infertile when mated to wild fruit flies6. It's also worth...information about gene drives can be found in the referenced publications. Thank you to our guest blogger...information, visit www.sculptingevolution.org. References: Burt, A. Site-specific selfish genes as tools... -
Interview: Nicola Patron on Plant Synthetic Biology, MoClo, and More
TypeBlog PostPublishedJune 12, 2014, 3:30 p.m....explains it, her work has always been focused on gene transfer, from transgenes to plants, chloroplast to the...anymore. The kit contains sequences for several different fluorescent proteins. Visualizing fluorescence...for those who go to work in cancer biology. References: A Golden Gate Modular Cloning Toolbox for Plants... -
Drew Endy Introduces the Biobrick Public Agreement Plasmid Collection
TypeBlog PostPublishedDec. 12, 2013, 3:35 p.m....the physical DNA samples, for when that's the preferred mode of receiving parts." "We have found an amazing...functions, which we know and love. Boolean is in reference to George Boole who in 1854 was thinking about...tell us readers, what do you want to make? References: Jerome Bonnet et al. "Amplifying genetic logic... -
Capturing a Moment with Marc Zimmer’s “The State of Science”
TypeBlog PostPublishedJuly 30, 2020, 1:15 p.m....journal editorials, science social media, and conference workshops for years. That is, presumably, why...these fields, and seeing names like Feng Zhang, Jennifer Doudna, Karl Deisseroth, and Ed Boyden crop up...scientist who enjoys learning a little bit about many different things (part of the reason Addgene has been such... -
Isolating Genomic Regions of Interest with the CRISPR System
TypeBlog PostPublishedMay 30, 2019, 12:44 p.m.... adaptations of this system have been made in different fields of study. In addition to the identification...purification with an anti-Cas9 antibody. These different tag systems and affinity purification schemes ...please also see our interview with Dr. Fujii. References Campbell, Amy E., et al. "NuRD and CAF-1-mediated... -
Tips for arabidopsis transformation
TypeBlog PostPublishedOct. 25, 2018, 1:23 p.m....plant pathogenic species that stably integrates transfer DNA (tDNA) into the genomes of the plants it attacks... (Nakagawa et al., 2007). Alternatively, if you prefer Golden Gate assembly, there are a series of plasmids...countless transgenic plants in the process. References 1. Emami, S., Yee, M. and Dinneny, J. R. (2013... -
Better Dyeing Through Chemistry & Small Molecule Fluorophores
TypeBlog PostPublishedSept. 8, 2016, 2:30 p.m.... lipoic acid ligase, biotin ligase, phosphopantetheinyltransferase) – These enzymes catalyze the covalent... We continue to develop derivatives that have different spectral properties, exhibit high fluorogenicity...modalities. Follow him on twitter @rhodamine110. References 1. Liu, Zhe, Luke D. Lavis, and Eric Betzig. ...