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We narrowed to 313 results for: POR C

Showing: 81 - 100 of 313 results

  1. Antibodies 101: Epitope Tags

    Type
    Blog Post
    Published
    May 11, 2023, 1:15 p.m.
    ...Epitope tags are short peptides introduced at the N or C terminus of a protein that are bound by antibodies...enterokinase, which recognizes the 5 amino acids on the C terminal of the tag. Of the most common tags, FLAG...not at all. The introduction of a tag at the N or C terminus of a protein may disrupt the biological function...destabilization can be brought about by the tag so it’s important to validate tagged protein functionality (Arribere...

  2. Hot Plasmids - September 2019 - CRISPR, Auxin Inducible Degradation, MerMAID Channelrhodopsins, and Genome Looping

    Type
    Blog Post
    Published
    Sept. 3, 2019, 1:15 p.m.
    ...please sign up here.        New toolkit for N or C terminal tagging of proteins for degradation using...has created a new toolkit of plasmids for the N- or C- terminal tagging of proteins with mAID and other ...cytidine deaminase  Target-AID-NG, which mediated a C to T conversion in the target sites adjacent to an...Earlier this year, the Hegemann lab and collaborators report their discovery of a new family of seven ChRs derived...

  3. Antibodies 101: Multiplex Immunofluorescence

    Type
    Blog Post
    Published
    May 23, 2023, 1:15 p.m.
    ... Boeckman, J. X., Manning, C. F., Nguyen, J. T., Bechtold, H., Dumitras, C., Gong, B., Nguyen, K., Van...-GABA-AR β1 (white) and anti-GABA-AR β3 (green). (C) Hippocampus labeled with anti-Kv2.1 (magenta), anti-AnkyrinG... Panels C1-C3 show magnified detail of the box in C. Image adapted from Andrews et al., 2019 under CC-... J., Kandov, E., Lowekamp, B., Speranza, E., Chu, C. J., Gola, A., Thakur, N., Shih, R., Yao, L., Yaniv...protocol is a good place to get started.  One important consideration when deciding whether you can do...specific considerations to keep in mind. Most importantly, make sure you are using primary antibodies from...

  4. Viral Vectors 101: The Retroviral Lifecycle

    Type
    Blog Post
    Published
    July 27, 2023, 1:15 p.m.
    ...4355596 King, S. R., Duggal, N. K., Ndongmo, C. B., Pacut, C., & Telesnitsky, A. (2008). Pseudodiploid Genome...A., Hunter, E., & Kappes, J. C. (1997). Functional RT and IN incorporated into HIV-1 particles independently...34372494. Prussin, A. J., Garcia, E. B., & Marr, L. C. (2015). Total Virus and Bacteria Concentrations in...

  5. Viral Vectors 101: AAV Variables That Matter

    Type
    Blog Post
    Published
    June 1, 2023, 1:15 p.m.
    ... Sellnow, R. C., Boye, S. L., Coberly, B., Bennett, A., Agbandje-McKenna, M., Sortwell, C. E., Hauswirth...Backer, M. W. A., Brans, M. A. D., Luijendijk, M. C., Garner, K. M., & Adan, R. A. H. (2010). Optimization...Dudek, A. M., Pillay, S., Puschnik, A. S., Nagamine, C. M., Cheng, F., Qiu, J., Carette, J. E., & Vandenberghe..., J. Y., Han, J. H., Lee, H., Han, Y. E., Rah, J. C., & Park, H. (2020). Labeling dual presynaptic inputs...injection site  (Kanaan et al., 2017), axonal transport  (Murlidharan et al., 2014), and postsynaptic ... system, remember that some serotypes can be transported retrogradely and/or anterogradely along the axon...et al., 2014; Nieuwenhuis et al., 2021). It is important to note that this expression pattern can be affected...

  6. Antibodies 101: Normalization and Loading Controls for Western Blots

    Type
    Blog Post
    Published
    April 8, 2025, 1:15 p.m.
    ...independent blots. B–C) Graphs showing the relative intensity of the β-actin (B) or total protein (C) on the membrane...quantification in panel B is not especially linear. In panel C, two different methods of quantifying total protein...linear. Note the different y-axes between panels B and C, indicating that β-actin is less sensitive as well...BioRender.com. Loading controls are even more important for semi-quantitative western blots. No pipetter...in the same lane, and the resulting fraction is reported. Figure 2: Normalization with loading controls...equally strong, so the normalized value simply reports which POI band is stronger. The right gel has exactly...abundance on your membrane, which would be directly reported by band intensity. Researchers use later steps...

  7. Plasmids 101: Dimers and Multimers

    Type
    Blog Post
    Published
    Jan. 10, 2023, 2:15 p.m.
    ... was reduced by growing seed stocks at 30°C compared to 42°C. Screen multiple colonies to isolate the ...19763938. Maucksch C, Bohla A, Hoffmann F, Schleef M, Aneja MK, Elfinger M, Hartl D, Rudolph C. Transgene expression...Growing the culture at a lower temperature such as 30°C or optimizing the incubation time can help maintain...long-read sequencing techniques, such as Oxford Nanopore sequencing or PacBio SMRT sequencing, (which differ...long-read sequencing (1-25 kb), such as Oxford Nanopore sequencing or PacBio SMRT sequencing. These longer... plasmid multimerization troubleshooting tips. Portions of this figure were made with BioRender. ...AE. Generic plasmid DNA production platform incorporating low metabolic burden seed-stock and fed-batch...

  8. Advanced Uses of Cre-lox and Flp-FRT - A Neuroscientist’s View

    Type
    Blog Post
    Published
    Oct. 19, 2017, 1:54 p.m.
    ...optimum of 30 °C and is therefore inefficient in mammalian cells (usually grown at 37 °C). Smart molecular...identification of FLPe which has a temperature optimum of 37 °C (Buchholz, Angrand, and Stewart 1998). FLPe’s performance... receptor (ER) ligand binding domain (LDB) to the C-terminus of FLP or Cre (pCAG-CreERT2 #14797). These...FLP-FRT. In addition, a variety of means to spatiotemporally control FLP and Cre expression have been developed...These differences in recombinase efficiency are important to keep in mind when deciding whether to use the... only occur at a specific time point? To allow temporal control, ligand regulated Cre and FLPe recombinase...control of Cre recombinase. After in-utero electroporation, this plasmid mix results in sparse labeling...

  9. pCXLE toolkit: Efficient episomal plasmid-based method to reprogram peripheral blood cells to iPSCs

    Type
    Blog Post
    Published
    Dec. 14, 2017, 2:08 p.m.
    ...the reprogramming factors- OCT3/4, SOX2, KLF4, and C-MYC [1]. For the derivation of clinical grade hiPSCs...vectors that encoded six factors - OCT3/4, SOX2, KLF4, C-MYC, LIN28 and SV40 large T antigen (SV40LT). The ...of TP53 enhances iPSC generation as does replacing C-MYC with L-MYC [10, 11]. While the mechanisms underlying...understood, the addition of an shRNA for P53 and replacing C-MYC with L-MYC in the episomal reprogramming cocktail...into cells by electroporation. hiPSC colonies are obtained by 10 days after electroporation, most of which...over a decade back when Yamanaka and colleagues reported that it is possible to reprogram differentiated...generation of human iPSCs (hiPSCs) now provides an opportunity to develop and use patient-specific somatic cells...

  10. Quick Guide to Working with Drosophila Part 2: Controlling Gene Expression in Flies with Gal4/UAS

    Type
    Blog Post
    Published
    July 21, 2017, 12:48 p.m.
    ...21356876. 5. J. Chow, Z. Marka, I. Bartos, S. Marka, J. C. Kagan, Environmental Stress Causes Lethal Neuro-Trauma...PubMed PMID: 28704652. 6. V. Rodríguez, D. Didiano, C. Desplan, Power tools for gene expression and clonal...Neurosci. 9, 703–709 (2006). PubMed PMID: 16582903. 8. C. J. Potter, B. Tasic, E. V Russler, L. Liang, L. Luo...you to systematically study gene function with temporal control and cell-type specificity! The Gal4/...

  11. Antibodies 101: Flow Cytometry Controls

    Type
    Blog Post
    Published
    June 6, 2024, 1:50 p.m.
    ...starting point for compensation (Fig. 1B-C). However, it’s important to note that because you’re using beads... single color control for the APC channel. B) and C) A flow plot showing an APC single color control prior...prior to compensation (B) and after compensation (C) with APC-Cy7.   FMOs FMO stands for fluorescence...

  12. 7 Tips to Secure a STEAM Internship This Summer

    Type
    Blog Post
    Published
    Feb. 2, 2021, 2:15 p.m.
    ...and Rose C. St Pierre, founders of STEAMid. Internships open doors to a web of opportunities that the ...guest bloggers Roodolph (Roo) P. St Pierre and Rose C. St Pierre! Roodolph (Roo) P. St Pierre is currently...populations. Roo is the co-founder of STEAMid.       Rose C. St Pierre is currently a graduate student at Northeastern... not deter any student from applying to the opportunities of their dream.  To help students focus on the...below:  1. Eligibility check Scrutinize every opportunity prior to starting an application to assess your...unless you are applying for a Federal Government opportunity, which tends to be more detailed. Beyond the ...draft a personal statement, which is the perfect opportunity to paint a comprehensive picture of your academic...

  13. Pooled CRISPR Libraries Offer Genome-Wide Control for Large-Scale Functional Screens

    Type
    Blog Post
    Published
    Feb. 24, 2015, 7:50 p.m.
    ...to fuse the activators instead of at the protein’s C terminus. With that new design in place, Konermann...Brigham MD, Trevino AE, Joung J, Abudayyeh OO, Barcena C, Hsu PD, Habib N, Gootenberg JS, Nishimasu H, Nureki...Adamson B, Villalta JE, Chen Y, Whitehead EH, Guimaraes C, Panning B, Ploegh HL, Bassik MC, Qi LS, Kampmann ...nucleolytically inactive Cas9-VP64 fusion; 2. A sgRNA incorporating two MS2 RNA aptamers at the tetraloop and stem-loop...knockout screening). As the Zhang lab's Nature paper reports, “Here we have shown that the SAM system is robust...size of the backbone, transformations require electroporation. References & Further Reading: For more ...

  14. CRISPR 101: Non-Homologous End Joining

    Type
    Blog Post
    Published
    April 16, 2015, 3:45 p.m.
    ...Oh S, Tomkinson AE, Hendrickson EA, Giovannangeli C, Jasin M, Brunet E (2014) Chromosomal Translocations.../10.1016/j.molcel.2014.08.002 Ran FA, Hsu PD, Lin C-Y, Gootenberg JS, Konermann S, Trevino AE, Scott DA... Yan M-Y, Li S-S, Ding X-Y, Guo X-P, Jin Q, Sun Y-C (2020) A CRISPR-Assisted Nonhomologous End-Joining...process involve repairing chromosomal DSBs. It is important to know that cells possess two major repair pathways...chance of causing a frameshift mutation. Of some importance, the deletion can be less heterogeneous when ...

  15. Deep Dive: qPCR

    Type
    Blog Post
    Published
    Sept. 29, 2022, 1:15 p.m.
    ...Annealing temperature should be 60-65°C For qPCR, the important primer variable is the annealing temperature... the primers.  Melting temperature should be ~60°C (between 50 and 65, with no more than 3 degrees between...curve will show multiple peaks.    (a) (b)  (c)   Fig. 1: Melt curves showsing (a) a single peak...dimers. (b) A shoulder peak indicating primer dimers. (c) A double peak indicating 2 amplicons. Image credits...02217-xTaylor, SC; Nadeau, K; Abbasi, M; Lachance, C; Nguyen, M; Fenrich, J. The Ultimate qPCR Experiment...Zuo J, Dong X, Zhang M, Hu G, Fang F. Fudenine, a C-terminal truncated rat homologue of mouse prominin...step. Scorpion chemistry in particular has been reported to work well in the Lightcycler while being relatively...

  16. Live and Let Dye: Self-Labeling Protein Tags

    Type
    Blog Post
    Published
    April 16, 2024, 1:15 p.m.
    ...mDia1 and CP appearance at the filament tip from (a). c) Intensity traces at the tip of the filament from ...10.1021/cb900062k Gautier, A., Juillerat, A., Heinis, C., Corrêa, I. R., Kindermann, M., Beaufils, F., & Johnsson...https://doi.org/10.1126/science.281.5374.269 Jing, C., & Cornish, V. W. (2011). Chemical Tags for Labeling... M. G., Hartzell, D. D., Karassina, N., Zimprich, C., Wood, M. G., Learish, R., Ohana, R. F., Urh, M.,...doi.org/10.1038/nmeth749 Strebinger, D., Frangieh, C. J., Friedrich, M. J., Faure, G., Macrae, R. K., &...amino acids to directly incorporate a fluorophore in your protein or to incorporate an alkene to be labeled... self-labeling tools: Tetracysteine: The first reported chemical labeling tag, from Roger Tsien’s lab ...

  17. Hot Plasmids and Viral Preps - March 2021

    Type
    Blog Post
    Published
    March 23, 2021, 1:15 p.m.
    ...interactions New auxin inducible degron system for C. elegans New CRISPR plasmids New items from the viral...tool-kit for the auxin inducible degron (AID) system in C. elegans By Alyssa Cecchetelli The auxin inducible... degron (AID) system has been extensively used in C. elegans since 2015 to conditionally degrade proteins...length can and should be varied as it can have important implications for the fusion protein effectivity...upon these original tools that allows for both spatiotemporal protein degradation and quantification of this...et al., 2021.   The AID system relies on a transport inhibitor response 1 (TIR1) expressed under a ...a desired promoter with a specific spatiotemporal expression pattern and an auxin inducible degron (AID...

  18. Troubleshooting and Optimizing a Western Blot

    Type
    Blog Post
    Published
    Sept. 17, 2024, 1:15 p.m.
    ...at 95 °C, a common lysis temperature, so consider a longer incubation (10–20 minutes) at 70 °C, or a truly... Additionally, protein lysis should be done at 4 °C or on ice, whichever is more practical. If your lysing... truly lengthy incubation (30–60 minutes) at 37 °C, if you suspect aggregation in your prep. If your proteins...protein-based blockers degrade fairly quickly, even at 4 °C, so when in doubt, make up a fresh batch.  Antibodies...and time. Though the most common conditions are 4 °C overnight or room temperature for 1–2 hours, there...sample loaded Incubate primary antibody at 4 °C overnight Incomplete washing Ensuring wash is...under-transferring.  Membrane pore size Membranes come in different pore sizes for different proteins:...

  19. An Integrin Antibody Toolkit from IPI

    Type
    Blog Post
    Published
    March 28, 2024, 1:15 p.m.
    ...conformations: (A) bent-closed, (B) extended-closed, and (C) extended-open. When a ligand binds, it typically ... with much lower affinity than their open states (C). Figure courtesy of IPI. IPI anti-integrin toolset...and resources References Hao, Y., Yan, J., Fraser, C., Jiang, A., Anuganti, M., Zhang, R., Lloyd, K., Jardine...Jaumouillé, V., Hao, Y., Coppola, J., Yan, J., Waterman, C. M., Springer, T. A., & Ha, T. (2022). Single-molecule...in competition with other similar integrins, as reported by IPI and the Springer lab (Hao et al., 2024)...In this study, we, along with the Springer lab, reported the binding specificity, kinetics, and affinity...belief that αVβ3 would be the most functionally important integrin on these cells. What’s next IPI is working...

  20. Five Popular Model Organisms, Part 2

    Type
    Blog Post
    Published
    Sept. 29, 2020, 1:15 p.m.
    .../000504294 Wang, T., Guan, C., Guo, J., Liu, B., Wu, Y., Xie, Z., Zhang, C., & Xing, X.-H. (2018). Pooled...doi.org/10.13918/j.issn.2095-8137.2016.4.237 McCusker, C., & Gardiner, D. M. (2011). The Axolotl Model for ...elife.50651 Vieira, W. A., Wells, K. M., & McCusker, C. D. (2019). Advancements to the Axolotl Model for ... areas of microbial research like metabolism. Transport, biofilms, and much more. Because of it’s BSL-...designed for use in Arabidopsis. There are also important tips for plant transformations and the use of ...
Showing: 81 - 100 of 313 results