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...calcium indicator (Shemetov et al., 2021). In addition to FRET, intensiometric calcium indicators NIR-GECOs...characteristics, performance, and applications of near-infrared calcium indicators in this recent review (Shcherbakova...expertise is development and applications of fluorescent proteins, genetically encoded biosensors, and optogenetic...Qian, Y. et al. A genetically encoded near-infrared fluorescent calcium ion indicator. Nat Methods 16, ...Shemetov, A.A. et al. A near-infrared genetically encoded calcium indicator for in vivo imaging. Nat Biotechnol...Shcherbakova, D.M. Near-infrared and far-red genetically encoded indicators of neuronal activity. J Neurosci Methods...information on NIR FPs, their properties and applications. At the end, there is a Table that summarizes...

...covered in detail here. Classical double-strand break repair (DSBR) In the classical DSBR pathway, the 3’...not be immediately applicable in DSB-induced genome engineering, it has biological importance for the ... PubMed. A Mouse Geneticist's practical guide to CRISPR applications. Singh P, et al. Genetics 114.169771...pathways of DSBs, with a focus on repair for genome modification purposes. How does homology directed repair...and Homology Directed Repair (HDR). NHEJ is the canonical homology-independent pathway as it involves the... provided the DNA template used for repair is identical to the original DNA sequence at the DSB, or it...specific mutations into the damaged DNA if these modifications exist in the template DNA. There are several...

...holding a physical model of the protein in your hand – you will understand the power of a physical model.... researchers use physical models of protein structure? We have been creating physical models of proteins... your hand? At 3D Molecular Designs, we create physical models of proteins using 3D printing technology...and I encourage you to hold one. Why do we need physical models of protein structure? Structural biologists...biologists have always struggled to effectively communicate the nuances of protein structure in a flat 2-D...problem with the development of Byron’s Bender – a mechanical device that could be used to bend 1/8th inch ... example, when Tom Steitz was presented with a physical model of his large ribosomal subunit, he kept ...

...like team building, collaborative critical thinking, and communication among others. They additionally ...therapeutic and pre-clinical problems! Who knows, perhaps the ideas spurred by this “gamification” will lead to...to develop strategies to make our classes more practical and hands-on. Students in these courses get plenty...playing a card game called “Magic”. There were complicated rules that governed how this game was played....upon who your challenger was, you might have to drastically alter your strategy. I realized that similar ... as I try being compelling, interactive, and application-driven to boost curiosity, I have never experienced...engineering and strategic knowledge to solve a clinical disease case. As a teacher, you explain the game...

...presented chronologically. With a resume however, most often people choose a reversed chronological style ... job asks for experience in “statistical analysis”, mention “statistical analysis” (word by word) in your...together a grant application? Are you familiar with the publishing or patent application processes? How ... pages in a Curricula Vitae to showcase your publications, academic performances, and research experiences... applying for. Also remember that a resume is typically no more than 2 pages long. Write your resume for...information. Think "skills," not just "research and publications” What are the skills you developed through your...handled large data sets and are familiar with statistical analysis. If you have done fluorescent imaging...

...circle. Typically, a yellow check mark indicates that a particular parameter was automatically adjusted... The vertical black dotted line represents the cut site. Cutting and error-prone repair typically result...content. Many thanks to our guest blogger, Jessica Roginsky. Jessica Roginsky leads the scientific support ...This article was contributed by Jessica Roginsky, Scientific Support Lead at Synthego. Article source... of robust software tools. As a consequence, a critical step in the gene editing workflow - analyzing ...either one at a time or as a batch of hundreds, and indicate the guide RNA sequence you used. The ICE tool ...and interpret data about these types of edits is critical to the CRISPR workflow. For a multiplex sample...

...detection is crucial for clinical diagnostics, genotyping, and biotechnological advancements. Many methods...method can be used for an array of applications including clinical diagnostics (e.g. pathogen or virus...population for an array of molecular and clinical diagnostic applications. The company Mammoth Biosciences has...activated” Cas13 produces a quantifiable signal that indicates the presence of your targeted nucleic acid. To...amplified using RPA (recombinase polymerase amplification) or reverse transcriptase (RT)-RPA, respectively...RNA for subsequent detection by Cas13. This amplification step in combination with the ssRNA reporter ... introduced in 2017 so the lab made further modifications to improve their detection system. They named...

...preference.   Historically, ICSS was done by implanting an electrode and non-specifically electrically stimulating...the steps and technical considerations are directly applicable to the rat [6]. Technical differences include...A high-light sensitivity optical neural silencer: development and application to optogenetic control of...[2]. Laser activation is usually controlled automatically using motion capture software such as EthoVision...EthoVision. Consult the literature to find all the applications of optogenetics relevant to your field. Ultimately..., regardless of the type of behavior, certain technical considerations still apply. Testing stimulation...Inhibition of neuronal activation is a little more complicated since basal neuronal activity in your brain region...

...intuitive, or logical to a biologist that are not at all obvious, intuitive, or logical to a layperson...from other sources. Mode of communication Different modes of communication take up different amounts of...your audience needs to understand what you’re communicating. While I’m sure that there are loads of ways...new languages!) Jargon has a place in science communication, but the more you use, the higher cognitive ...This can be obvious, in that a lot of science communication is helping people understand new concepts. You...layperson. When you’re communicating ideas that you think are clearly connected, step back and ask yourself, ...pick and choose what concepts and details to communicate. It’s okay (and encouraged) to leave blank spaces...

...ability to specifically recognize and bind proteins. They’re used in a number of research and clinical applications... antibody’s ‘Y’. They are often used in clinical applications. Fab fragments can be created in lab in ...Shahied, 2004). They are often used for clinical applications, including imaging.  Diabodies are ~60 kDa...deeper penetration into a tissue, useful for applications like IHC, or be able to access an epitope folded...that would size-exclude an antibody. In imaging applications, smaller affinity reagents means higher resolution...Designed ankyrin repeat proteins, or DARPins, are genetically engineered small affinity proteins, around 14...proteins known as ankyrin repeat proteins. DARPins typically consist of 3-4 repeats, have high specificity ...

...Much of today's biological research requires a close examination of specific proteins within a system...system. This can be pretty complicated given that a single cell has tens of thousands of proteins functioning...single protein? Oftentimes, they rely on protein purification. In this strategy a single protein can be isolated...this blog will focus on one of the most common, purification based on the polyhistidine tag. What is the ...purity (Janknecht 1991, Hochuli 1988). In this purification approach, the metal ions are immobilized on ... incorporation of a cleavage site and a post-purification cleavage step to remove the tag in order to ...2000).  One downside of polyhistidine tag-based purification, however, is the propensity for nonspecific ...

...conjugates (especially if you start to consider clinical applications). But there are a few other classes that... mechanisms. Most take advantage of chemical groups intrinsically present on antibodies, such as the primary...post-translationally. 4) Modifications made to antibodies, such as inclusion of non-canonical amino acids or peptide...Chemiluminescence, which is light produced by a chemical reaction, can be detected using specialized imaging...reactions produce a color change, so they are typically used in microscopy-based assays like immunohistochemistry...These properties allow for efficient signal amplification, making biotin conjugated antibodies good options...sensitive detection of low abundance targets with significant multiplexing potential. You will find antibody-oligonucleotide...

...resistance cassette, and the R6K origin of replication to allow replication only in hosts carrying the bacteriophage...Belarusian State University Series of Physiological, Biochemical and Molecular Biology Sciences. 9.1 (...Lambda Red recombineering, which uses enzymes domesticated from the Lambda bacteriophage, is arguably the...enzymes can also accomplish the desired genomic modification. This technique is frequently called allelic...recipient of interest. Because pDS132 cannot be replicated in the recipient, the only antibiotic resistant...They hypothesized that genes that had evolved specifically for toxicity would allow stronger counter-selection...exchange. To do this, we performed the following modifications to pDS132 (Philippe et al., 2004): Replaced...

... brainstorming new technological innovations. Let’s take a look at three historical techniques: southern...computers, cell phones, and cars become more technologically advanced leaving earlier versions obsolete,...that save both time and money. Yet, knowledge of historical techniques comes in handy whether you are perusing...comparison to a control sample. Southern blotting applications range from confirming the results of cloning...cloning or knockout experiments to forensics and clinical diagnostics. One example of southern blotting being...interest by recording DNA abundance throughout the amplification process, rather than just at the end as in standard...fragments of a DNA sequence of interest to create a physical map of the DNA. Starting in the 1970s, restriction...

...UCIBIO) focused on understanding the physiological and pathological roles of human cell glycans. Accordingly... biosynthetic pathway and have a wide range of clinical manifestations. PMM2-CDG is the most frequent ...reported that PMM2-CDG patients suffer from immunological defects. These are characterized by a predisposition...these lines to study how immune processes and biological pathways are altered in PMM2-CDG. These studies...reducing their risks for infection and other pathological conditions. References: Monticelli, M., Ferro... J., dos Reis Ferreira, V. & Videira, P. A. Immunological aspects of congenital disorders of glycosylation...Biology at the University of Colorado Anschutz Medical Campus in Aurora, Colorado, USA. The primary focus...

...of the FRET pair. Since many biological processes occur within the typical FRET range, FRET efficiency ...nanometers of each other, or measure the tension in the helical structure of spider silk, or the activity of a ...Fluorescence Resonance Energy Transfer. Unlike the typical excitation and emission of an excited fluorophore...donor fluorophore to the acceptor fluorophore. The typical steps in FRET are: 1. Donor fluorophore excitation...decision easier. 1. Müller, Sara M., et al. "Quantification of Förster resonance energy transfer by monitoring...Experiments using intermolecular FRET probes are typically used for studying protein-protein interactions...with an intermolecular probe is often either impractical (for biomolecules that are not proteins) or would...

...region you wish to stimulate 2) Fabrication and implantation of the optical fiber into the region of interest...run it? And, most importantly, what are the methodological and experimental limitations and considerations...numerous scientists at NIDA and some of the practicalities and considerations you may not find in the ...there of, depending on the opsin you use); the efficacy of optogenetics has already been proven. Therefore...region and cell type of interest is obviously of critical importance to any optogenetic experiment. There...pioneered the development of optogenetics, has genetically manipulated a number of the opsin genes to alter...optogenetics. Successful stereotaxic surgery relies on identification of the bregma and lambda sutures and subsequent...

...supporters of science communication. To help you think about ways to effectively communicate your science, we...Scientist Jessica Welch Have Had to Explain Importance of Narrative in Science Communication Conversation...Conversation in Science Communication The Purpose of Science Communication #1 Mistake Scientists Make when Communicating...News at Harvard University. Effective science communication is required to promote public support for research... organization that works to promote science communication. Science in the News hosts a podcast, seminars...That’s right, #ActualLivingScientists, eager to communicate their science. In this first half of our two-...programs SITN runs and learn how they think about communicating science. Listen to the interview with Science...

...various time points. Measuring the optical density of the culture can indicate the number of cells present in...in-house protocol. DNA yields for this procedure are typically in excess of 100 ng/ul, more than enough DNA to...are, you’ll even have DNA left over for other applications, like PCR, cloning, transfection, or long-term...wash step or use a different strain. For most applications, Addgene uses and recommends DH5𝝰! This strain...cloning Bacterial strains adapted for protein purification use the cell’s resources to produce high levels...retransforming the plasmid into a strain meant for DNA purification. It sounds like extra work, but it will likely...your E. coli to ensure it is suitable for your application. We have previously reviewed many common lab ...

...light and chemicals respectively. Didem Goz Aytruk from Connie Cepko’s Lab at Harvard Medical School describes...although fluorescent proteins are incredibly useful, chemical fluorophores can still be used in a wide variety...variety of experiments. Read more to find chemical fluorophores for your next experiment. Nucleic acid based...systems that report the order in which specific chemical inputs are received by a cell. These so-called...report upon and/or engineer “temporally ordered biochemical events” such as those that occur during development...containing only the sequences required for viral replication and transcription as well as reporter genes. ...Membrane-Rupturing Microscopic Tools In this post, Jessica Polka, formerly a postdoctoral researcher in the...