We narrowed to 281 results for: hal.1
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TypeBlog PostPublishedNov. 14, 2023, 3:35 a.m.... depending on the specific edit. Figure 1: Choosing the best PE6 variant for your application...modular envelope design. Nature Communications, 14(1), 5141. https://doi.org/10.1038/s41467-023-40788-8...externally-timed bands of color with HaloTag-iPAK4 by applying different HaloTag dyes and showed they could record...local proteome, but some applications have been challenging or inaccessible. The Ting lab recently made two.... B) HEK cell with an iPAK4 fiber labeled with HaloTag-iPAK4. Scale bar 10 µm. C) Images of iPAK4 fibers...fibers in cultured rat hippocampal neurons. HaloTag dyes are switched from yellow to red at 0 h and back...
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Using Ultrasound to Image Bacteria in vivo: Acoustic Reporter Genes
TypeBlog PostPublishedJune 19, 2018, 1:38 p.m....optimized for expression in E. coli: acoustic gene 1 (arg1) and acoustic gene 2 (arg2). The key difference... plasmids are available from Addgene! References 1 Bourdeau, R.W., Lee-Gosselin, A., Lakshmanan, A., ...widely available imaging platform: ultrasound. Challenges of in vivo imaging with existing bacterial reporters... -
PITChing MMEJ as an Alternative Route for Gene Editing
TypeBlog PostPublishedFeb. 23, 2016, 3:30 p.m....homologies. Abbreviated protocol for PITCh Step 1: Generate microhomologies in the PITCh vector ~20...editing possibilities MMEJ can enable. References 1. Sakuma, Tatsushi, et al. (2016). “MMEJ-assisted ...CRISPR-Cas9 with the PITCh systems.” Nat Protoc. 11(1): 118-33. PMID: 26678082. Find the plasmids from ...cell lines can be created in about a month and a half, without the need for complicated cloning of homology... -
Plasmids 101: Repressible Promoters
TypeBlog PostPublishedDec. 20, 2022, 2:15 p.m....Bacillus. Appl Microbiol Biotechnol. 2019 Jan;103(1):303-313. doi: 10.1007/s00253-018-9485-4. Epub 2018...and clonal analysis in Drosophila.” Nat Methods 9(1) (2011): 47-55. PubMed PMID: 22205518. PubMed Central...Methods Mol Biol. 2016;1478:53-78. doi: 10.1007/978-1-4939-6371-3_3. PMID: 27730575; PMCID: PMC5270762. ... and lac promoters.” Proc Natl Acad Sci U S A. 80(1) (1983): 21-5. PubMed PMID: 6337371. PubMed Central...solve the problem of broad QF expression-induced lethality in flies. Riabinina et al. also developed chimeric... -
How to Prepare for an Industry Interview
TypeBlog PostPublishedJuly 9, 2020, 1:15 p.m....company culture. It’s also a good idea to prepare 1-2 unique questions for each interviewer by looking...to take notes after each interview. Tailor your 1-hour presentation to your audience Start by asking...research project. In total, the interviews lasted from half to all of the day. This whole process may seem ...carefully. And even if you don’t have technical challenges, your interviewers might. You’ll probably still... -
Hot Plasmids: Summer 2025
TypeBlog PostPublishedAug. 28, 2025, 1:15 p.m.... high brightness and fast maturation time (Figure 1). See the paper for more details on small differences...mGold2t depending on the application. Figure 1: Super-resolution imaging of actin filaments with ...proteins for extended imaging. Nature Communications, 16(1), 3241. https://doi.org/10.1038/s41467-025-58223-5...perform neuronal tracing, anterograde tracing poses challenges, from non-selective anterograde transport to ... -
Production of Virus in Insect Versus Mammalian Cells
TypeBlog PostPublishedNov. 5, 2024, 8:32 p.m....centrifugation (lenti) Centrifugation Titration time ~1 day (AAV); ~1 week (lenti) 2–10 days Initial titers Higher...will help you decide which is right for you. Table 1: Mammalian versus insect cells for viral production...Come From and What Do They Mean? Overcoming the Challenges of Lentivirus Production Tips for Titering Your... -
Hot Plasmids - October 2022
TypeBlog PostPublishedOct. 6, 2022, 1:15 p.m....protein sequence of the predecessor GEVIs (called ASAP 1 and 2), they found an indicator that is optimized ...several other constructs in plasmid form. Fig. 1: Summary of the approach and outcomes of the screen.... The resultant JEDI-2P sensors overcome many challenges in 2-photon in-vivo imaging of voltage fluctuations... -
Genetically-encoded Sparse Cell Labeling - A SPARC of Innovation
TypeBlog PostPublishedMay 21, 2020, 1:15 p.m....Rodríguez et al., 2011). Genetics of SPARC Figure 1: SPARC and SPARC2 use the GAL4-UAS system along with... several common genetic tools in Drosophila (Fig. 1): GAL4-UAS, a transcription factor binding site....titration of the AAV. So far, tools to overcome this challenge in Drosophila require heat-shocking the system... -
Tips for arabidopsis transformation
TypeBlog PostPublishedOct. 25, 2018, 1:23 p.m....Arabidopsis thaliana seedlings following floral dip transformation’, Plant Methods. BioMed Central, 2(1), p. ...with a single insertion because it will segregate 3:1 in the T2 generation. You also have no control over... transgenic plants in the process. References 1. Emami, S., Yee, M. and Dinneny, J. R. (2013) ‘A robust... -
Don’t FRET: Bimolecular Fluorescence Complementation Makes Visualizing Protein-Protein Interactions Easy
TypeBlog PostPublishedAug. 27, 2020, 1:15 p.m....tethered to bring them into close proximity (Figure 1). Formation of the complete FP results in a fluorescent...detected by fluorescence microscopy. Figure 1: How BiFC works. A split FP (e.g., yellow fluorescent... protein interactions in living cells. Nat Protoc 1:1278–1286. https://doi.org/10.1038/nprot.2006.201 ...also theoretically possible, but likely more challenging, with lentiviral expression. For more detail ... -
Better Dyeing Through Chemistry & Small Molecule Fluorophores
TypeBlog PostPublishedSept. 8, 2016, 2:30 p.m....environments such as live cells and tissues (Figure 1). These flexible strategies give you the best of both...majority of in-cell labeling strategies have two parts: (1) a genetically encoded “tag” expressed as a fusion...Follow him on twitter @rhodamine110. References 1. Liu, Zhe, Luke D. Lavis, and Eric Betzig. "Imaging... include: Self-labeling tags (e.g., SNAP-tag, HaloTag, TMP-tag) – These widely used systems consist of... -
Tips for Screening with Yeast Two Hybrid Systems
TypeBlog PostPublishedOct. 22, 2015, 2:30 p.m.... fusions that retain their individual activities (1). Researchers also discovered the modular format of...systems could be combined effectively (3). In Figure 1 for instance, the DBD of the fusion protein shown ...ubiquitin system has been devised (8). References 1. Casadaban M.J., Martinez-Arias A., Shapira S.K., ...functional luciferase only when fusions of the two halves of the luciferase protein interact and enable intein... -
Summer SciComm: Science Storytelling
TypeBlog PostPublishedSept. 16, 2022, 1:15 p.m..... In literary terms, conflict can be defined as (1) the struggle between two opposing forces or (2) the...journey even when they know the ending. Fig. 1: We all know that the superheroes win in the end. ... and what can be left out, which can be a big challenge! The resolution Throughout your conflict, you... -
Viral Vectors 101: Parts of the AAV Transfer Plasmid
TypeBlog PostPublishedAug. 11, 2020, 1:15 p.m....and take a look at each of its parts. Figure 1: Parts of an AAV transfer plasmid. Parts shown in ..., ubiquitous expression, while the human synapsin 1 promoter is neuronal specific (Haery et al., 2019)...sequencing conditions which can read through this challenging sequence. Transgene The transgene is the gene... -
History of CRISPR Cas - A tale of survival and evolution
TypeBlog PostPublishedNov. 25, 2013, 10:12 p.m....sequences were initially discovered in E. coli in 1987 (1), the concept that these clustered repeat sequences...neutralize CRISPR/Cas. Earlier this year, expression of 1 of 5 anti-CRISPR genes were found to inactivate the...defense against invading phages. Rising to the challenge - Evolution of anti-CRISPR genes in phages The... -
What's Your Organism? Expanding Genomic Tools via the NSF EDGE Program
TypeBlog PostPublishedMay 2, 2019, 12:41 p.m....protein. Did you know that most cephalopods die after they lay their 1 clutch of eggs? Propagation is ...organism blog posts: Five Popular Model Organisms, Part 1 Five Popular Model Organisms, Part 2 ...share all of these new organisms continues to be challenging. Organism specific viral vector systems would...thus making progress on the NSF “G to P grand challenge.” Creating a productive, new scientific community...proteins, and DNA. Euprymna scolopes (Joshua Rosenthal) The Hawaiian bobtail squid has an extreme number... -
Plasmids 101: How to Verify Your Plasmid Using a Restriction Digest Analysis
TypeBlog PostPublishedAug. 28, 2014, 3:34 p.m....restriction digests are comprised of 2 separate steps: 1) incubating your DNA with restriction enzymes which...The resulting gel image includes a 1kb ladder (lane 1) that has bands ranging from about 500bp to 10kb, ...yourself or obtained it from a colleague down the hall, it is always a good idea to take some time to confirm... -
A New Generation of Adenine Base Editors Improves Editing in Primary Human Cells
TypeBlog PostPublishedMay 7, 2020, 1:15 p.m....mediate A•T-to-G•C base changes (Figure 1), but it can be challenging to make these base changes, especially...dCas to the genomic DNA of interest Figure 1. When ABEs are in action they bind DNA so that the...𝛽-globin), which cause sickle cell disease and 𝛽-thalassemia, can be mitigated with the expression of fetal... -
10 Basic tips for mammalian cell culture
TypeBlog PostPublishedJuly 12, 2018, 1:09 p.m....for example, split cells on a Monday diluting them 1:10, you should be able to split on the following Thursday...Immunology. You can find Sana on LinkedIn. References 1. Yin, R., et al. "Gene expression profiling analysis...Turning on the UV light 3-4 times a week for up to half an hour can help keep your hood contamination free...Additional Resources on the Addgene Blog The Challenges of Cell Culture Cloning Mammalian Cells with ...