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Showing: 201 - 220 of 337 results
  1. Fluorescent Proteins 101: Green Fluorescent Protein (GFP)

    Type
    Blog Post
    Published
    May 15, 2014, 3:33 p.m.
    ...from GFP and the mutation definitions found in Table 2 may not apply. Table 1: The specific mutations comprising..., V163A EBFP F64L, S65T, Y66H, Y145F   Table 2: Functional role of specific mutations in GFP derivatives...that of the gene of interest, or expressed from the same transcript as the gene of interest, but after an...
  2. Plasmids 101: Stringent Regulation of Replication

    Type
    Blog Post
    Published
    June 20, 2024, 1:15 p.m.
    ...the chromosome, ending replication.   Figure 2: Prokaryotic chromosomal replication. Adapted from...Microbiology and Molecular Biology Reviews: MMBR, 62(2), 434–464. https://doi.org/10.1128/MMBR.62.2.434-464.1998...machinery in order to replicate—but not always to the same extent. As described in our previous Origin of Replication...proteins, it can be regulated indirectly via the same mechanisms that affect DnaA and IHF. RepA also controls...
  3. CRISPR 101: Validating Your Genome Edit

    Type
    Blog Post
    Published
    Nov. 3, 2022, 12:15 p.m.
    ...faster when using a dual guide system.   Fig. 2: Size screening for large deletion events.   ... Biol 17: https://doi.org/10.1186/s13059-016-1012-2 Find more CRISPR Resources at Addgene: Read our CRISPRGuide... as a proxy for your edit of interest. Using the same gRNA and donor, you can deliver a silent mutation...to compare the sequencing reads from your edited sample to an untreated population. Software such as CRISPResso...
  4. Antibodies 101: The Basics of Western Blotting

    Type
    Blog Post
    Published
    March 8, 2021, 2:41 p.m.
    ... a western, proteins are: (1) separated by size, (2) transferred to a membrane, and  (3) detected using...expensive system-specific sandwiches.   Figure 2: The western blot dry apparatus includes a stack of...thiols, to cleave disulfide bonds. Load the samples, one sample per lane, onto the top of a resolving gel...all of the proteins in a sample migrate through the stacking gel at the same pace and enter the resolving...consistent size and density present in all samples. Uneven sample loading or incomplete protein transfer ...Figure 1: Overview of the Western blot process. The sample, a mixture of protein is separated in a gel, transferred...is the first step of a western. To prepare the samples for SDS-PAGE, measure the protein content and normalize...
  5. Antibodies 101: Validation

    Type
    Blog Post
    Published
    March 24, 2022, 1:15 p.m.
    ...another. You’ll need to validate that points 1 and 2 hold true under your specific experimental conditions...when (1) other strategies may not be feasible and (2) large-scale proteomic and transcriptomic datasets...antibody signal in the retinal sample, but little to no signal in the liver sample, which you do (C), so your...epitopes on the same target reduces the likelihood that both antibodies would bind to the same off-target ...to - particularly when you start using complex samples such as whole cell lysate or tissue sections. It...require variable expression of your target across samples - it is hard to distinguish between specific, invariable...there is a wealth of transcriptomic data from this sample type, so you use your bioinformatics skills (or...
  6. 6 Tips for Analyzing and Troubleshooting Sanger Sequencing Results

    Type
    Blog Post
    Published
    June 26, 2014, 2:23 p.m.
    ...SnapGene Viewer (Mac/PC) FinchTV(Mac/PC) Chromas (PC) 2. You should see individual, sharp and evenly spaced...less and you might suspect contamination in your sample or consider asking your sequencing facility to ...Use a silica spin column for purification of the samples you send for DNA sequencing If your sequencing ...
  7. Quick, Versatile Plant Transgenesis with GreenGate Plasmids

    Type
    Blog Post
    Published
    Jan. 23, 2014, 3:23 p.m.
    ...Transgenesis." PLoS ONE. 8(12): e83043 (20 December 2013). 2. Carola Engler et al. "A One Pot, One Step, Precision...toolkit - aptly named GreenGate – offers all of those same advantages to researchers working in plant model...allows us to design modules that always have the same recognition site but distinct sites where the enzyme...
  8. Fluorescent Proteins 101: Monitoring Cell Mobility Using Fluorescent Proteins

    Type
    Blog Post
    Published
    Aug. 15, 2017, 1:24 p.m.
    ... fluorescent proteins expressed in the specimen.  2. Fluorescence Activated Cell Sorter (FACs) A machine...photostability of your fluorescent protein when using 2-photon microscopy as this hasn't been well reported...PMID: 18703742. PubMed Central PMCID: PMC2606057. 2. Chtanova, Tatyana, et al. "Dynamics of neutrophil...depth. Two low-energy photons (typically from the same laser) cooperate to cause a higher-energy electronic...
  9. Fluorescent Proteins 101: Fluorescent Protein Timers

    Type
    Blog Post
    Published
    May 4, 2017, 2:30 p.m.
    ...linear region to solve for total expression time. 2. Timer functionality with a single gene Although it...290.5496 (2000): 1585-1588. PubMed PMID: 11090358. 2. Tsuboi, Takashi, et al. "Age-dependent preferential...and look at them under a microscope, fractionate samples to isolate particular organelles and their contents...
  10. Antibodies 101: Producing Recombinant Antibodies

    Type
    Blog Post
    Published
    Aug. 13, 2024, 1:15 p.m.
    ...;550(1-2):251-268. doi: 10.1016/j.ijpharm.2018.08.043. Epub 2018 Aug 23. PMID: 30145245. Samiul Amin, ...and particle formation. J Pharm Sci. 2015 Feb;104(2):602-11. doi: 10.1002/jps.24259. Epub 2014 Nov 21....
  11. Deciphering the Mysteries of Behavior with Viral Vectors

    Type
    Blog Post
    Published
    Sept. 17, 2019, 12:40 p.m.
    ...of these neurons via the channel Channelrhodopsin 2 (ChR2) reduced glutamate transmission from the mPFC...deliver Cre-dependent expression of  Channelrhodopsin 2 (ChR2), a modified receptor protein that activates...actively swimming versus passive floating. In the same paper, the authors used lentivirus to introduce ...
  12. Fluorescent Proteins 101: When GFP lets you down

    Type
    Blog Post
    Published
    Aug. 23, 2018, 12:05 p.m.
    ...phosphoinositides (Varnai and Balla, 2008) (Figure 2). RNA production can be detected by using a MS2 coat... 296.5569 (2002): 913-916. PubMed PMID: 11988576. 2. Tsien, Roger Y. "The green fluorescent protein." ... proteins are also a better choice for thicker samples. Another solution to avoid autofluorescence is ...reaction and hence, there is no need to excite the sample. Although bioluminescent probes are usually dim...
  13. The Addgene Antibody Data Hub

    Type
    Blog Post
    Published
    Sept. 12, 2024, 1:15 p.m.
    ...rating, sample species, antibody species, or whether the results include knockout data.    Figure 2: Search...
  14. Addgene's Website Update

    Type
    Blog Post
    Published
    April 8, 2024, 2:15 p.m.
    ...prompt you to log in or create an account.  Figure 2: The new deposit materials bar New menu Most common...Materials”. The “Search Repository” function is our same search bar. And if you’re in the mood to browse ...
  15. Your Top Requested Plasmid in 2015!

    Type
    Blog Post
    Published
    Dec. 30, 2015, 3:30 p.m.
    ...PMID: 24336571. PubMed Central PMCID: PMC4089965. 2. Sanjana, Neville E., Ophir Shalem, and Feng Zhang...available for a little over a year and a half, a small sampling of the research it has already been used for includes...
  16. What's the Best Way to Elute and Store Your Plasmid DNA?

    Type
    Blog Post
    Published
    June 4, 2020, 1:22 p.m.
    ...elution choices: TE, Tris buffer, or water Figure 2: Tris-EDTA, Tris, or water? The buffer you choose ... last step will influence the stability of your sample over time and determine which experiments you can... impact the time you will be able to store your sample without having substantial degradation and which... DNA, it will limit what you can do with these samples. This is because divalent cations are essential...reaction, an effective possibility is to dilute your sample in water to reduce the EDTA concentration. Alternatively...
  17. Behind-the-scenes of the Isolation of the Thermostable IgnaviCas9 From a Yellowstone Hot Spring

    Type
    Blog Post
    Published
    Nov. 12, 2019, 2 p.m.
    ... unknown bacteria. Figure 2: Christina Mork collecting samples at the hot spring. Hiking all...highly complex hot spring sample. The sample was separated into smaller samples of 5-10 cells each for sequencing...leave your samples behind! Paul and Anastasia (Potanina) Neddersen characterized a few samples by 16S ...biological dark matter and so the lab organized a sampling trip to Yellowstone National Park (YNP). Extremophiles...from these extreme environments. Gearing up for sample collection at the hot springs My husband, Paul ...post doc in the Quake Lab, volunteered to do the sampling and I happily agreed to accompany him to YNP the... and two deep cycle batteries for power so the samples could be kept frozen after collection. Figure...
  18. Using Video to Share Your Science: We Share Science

    Type
    Blog Post
    Published
    Nov. 3, 2016, 2:30 p.m.
    ...Information Science and Technology 60.4 (2009): 858-862. 2. Van Noorden, Richard. "Interdisciplinary research...Librarianship and Scholarly Communication 2.2 (2014): 2. Additional Resources on the Addgene Blog 6 Tools...amount of interdisciplinary research while at the same time increasing interdisciplinary citations in their...
  19. Easing the Protein Purification Process with pCri

    Type
    Blog Post
    Published
    June 19, 2015, 3:08 p.m.
    ...PMID: 25386923. PubMed Central PMCID: PMC4227841. 2. Young, Carissa L., Zachary T. Britton, and Anne S...N- and C-terminal. Each set of plasmids uses the same restriction enzymes for cloning (see schematic below...one need to remove the tag post-purification. A sample of pCri constructs: pCri-1a, -4a and -9a. 6xHis...
  20. Mycoplasma Contamination: Where Does It Come From and How to Prevent It

    Type
    Blog Post
    Published
    Oct. 8, 2020, 1:15 p.m.
    ...bringing in environmental contaminants.  Figure 2: An Addgenie works in the tissue culture hood while...doi.org/10.1290/1071-2690(2002)038<0086:caeomi>2.0.co;2 Uphoff CC, Drexler HG (2011) Detecting Mycoplasma ...commonly used for every cell culture. Reusing the same bottle of serum again and again for each subculture... changed for at least two or three days before sampling (Uphoff and Drexler, 2011). Culturing on agar...
Showing: 201 - 220 of 337 results