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We narrowed to 223 results for: ENDO 2

Showing: 201 - 220 of 223 results
  1. To Codon Optimize or Not: That is the Question

    Type
    Blog Post
    ...Hoogsten base pairs and wobble pairs.  Figure 2: (A) The codon wheel depicts the 64 codons that encodes...efficiency is correlated with codon bias across all endogenous genes in E. coli and S. cerevisiae (Tuller et...
  2. Save Time with Transient Plant Leaf Transformations

    Type
    Blog Post
    ...GUS-staining is a very useful visual reporter (Figure 2). The GUS enzyme cleaves a substrate, which will then...Agrobacterium lacking the GUS gene since plants can have endogenous GUS-like activity (Hu et al., 1990). We commonly...
  3. Lentivirus Production

    Type
    Protocol
    ... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working...μg total DNA to μg PEI ratios of 1:1, 1:2, 1:3 and 1:6. The 1:2 and 1:3 total DNA:PEI μg ratios provided...packaging cells Day 1 (pm): Transfect packaging cells Day 2 (am): 18 h post-transfection. Remove media, replace...Biological Safety Cabinet 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... 200–1000 µL single channel pipette Ice bucket CO 2 incubator Pipet controller Hazardous waste container...culture plates. Incubate the cells at 37 °C, 5% CO 2 for ~20 h. Prepare a mixture of the three transfection...plasmid using a variety of ratios. Check the cells 1-2 days after transfection to determine what ratio gives...
  4. Affinity Purification of Recombinant Antibodies with Protein A or Protein G

    Type
    Protocol
    ...phosphate monobasic monohydrate (NaH 2 PO 4 ∙H 2 O), pH 7.0 138 g NaH 2 PO 4 ∙H 2 O 1 L deionized water Adjust...sodium phosphate dibasic (NaH 2 PO 4 ), pH 7.0 142 g of NaH 2 PO 4 ∙H 2 O 1 L deionized water Adjust pH...monobasic monohydrate (NaH 2 PO 4 ∙H 2 O) 610 mL of sterile sodium phosphate dibasic (NaH 2 PO 4 ) Store up to...recombinant antibody. Section 2: Buffer exchange Choose Option 1 or Option 2 based on the concentration ...antibodies. Workflow Timeline Day 1: Purify antibody Day 2 or later: Buffer exchange Equipment Class II, Type...conical tubes NanoDrop spectrophotometer 37 °C, 5% CO 2 incubator with shaking platform set to 120 rpm 37 ... channel pipette 20–200 µL single channel pipette 2–20 µL single channel pipette Reagents Aspirating pipette...
  5. Coomassie Purity Stain of Recombinant Antibodies

    Type
    Protocol
    ...follows: Figure 2 Using the box tool, draw a box around the entire first gel lane (as in Figure 2). Select Analyze... Example for AR0018 (lane 2 in Figure 1): Sample Peak 1 (contaminant) Peak 2 (contaminant) Peak 3 (HC)...choose Use Equation . Select the Show R 2 checkbox. Pro-Tip The R 2 of the trendline should be between 0.95...Equipment Heat block 1–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... Add 5 µL of 4X sample buffer to each sample. Add 2 µL 10X reducing agent to each sample. Spin the sample...bottom part of the gel where dye is visible. Section 2: Staining the Gel Place the gel in a plastic tray .... Figure 1 Recombinant antibody preps should have 2 clear bands at ~50 kDa and ~25 kDa corresponding to...
  6. Western Blot

    Type
    Protocol
    ...transfer, block, incubate with primary antibody Day 2: Incubate with secondary antibody Video Watch this... Microcentrifuge 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...Heat block Mini gel tank chamber Power supply iBlot 2 Gel Transfer Device Roller Spatula Platform shaker...running buffer Prestained protein ladder Ethanol iBlot 2 PVDF Mini Stack, Thermo Fisher IB24002 20X TBS Tween...immediately or store at -80 °C until ready to use. Section 2: Determine the total protein concentration and prepare...in deionized water. To prepare 20% ethanol, dilute 2 mL of ethanol into 8 mL of deionized water and mix...the transfer sandwich as follows: Unseal the iBlot 2 PVDF Mini transfer stack. Set the Top Stack to one...
  7. Antibody Validation Using the Indirect ELISA Method

    Type
    Protocol
    ...vapors. Workflow Timeline Day 1: Antigen Coating Day 2: Blocking Day 3: Primary antibody incubation Day 4...with 96-well plates 1–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...serial dilutions of the purified antigen as follows: 2 ng/µL : Add 100 µL of 20 ng/µL stock into 900 µL PBS...microfuge tube and vortex. 1 ng/µL : Add 450 µL of 2 ng/µL stock into 450 uL PBS in a microfuge tube and...37 °C for 30 min , or overnight at 4 °C . Section 2: Block the plate Prepare the wash buffer (0.05% Tween...incubate on a microplate shaker set to 400 rpm for 2 h at room temperature or overnight at 4 °C . Section...
  8. Quick Guide to Near-Infrared Fluorescent Proteins

    Type
    Blog Post
    ... iRFP713, % Oligomeric state Photo-stabilityc, t1/2, s pKa Brightness in HeLa cells vs. iRFP713, % d ...Table 1) were optimized for efficient binding of endogenous BV.  When imaging NIR FPs, consider using light...
  9. Transfection for Recombinant Antibodies

    Type
    Protocol
    ...Warnings HEK293 cells are considered biosafety level 2. Please ensure that you are in compliance with your... 18, 2022 Workflow Timeline Day 1: Seed cells Day 2: Transfect cells Day 3-6: Feed cells Day 7: Harvest...conical tubes Automated cell counter 37 °C, 5% CO 2 incubator with shaking platform set to 120 rpm 37 ...250 mg Benzamidine 25 mL Aprotinin saline solution (2 mg/mL) Mix well and sterilize through a 0.2 µm PES... a 500 mL vented flask.Incubate in a 37 °C, 5% CO 2 incubator on a shaking platform set to 120 rpm. Pro-Tip... not use cells that are over 30 passages. Section 2: Transfection Check the cell density and viability...the culture. Pro-Tip Culture should be between 1.5–2 x 10 6 cells/mL with >95% viability to proceed with...
  10. Immunocytochemistry

    Type
    Protocol
    ...Fluorescent microscope 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel... plate 4% Paraformaldehyde 5 mg/mL 4′,6-diamidino-2-phenylindole (DAPI) Bovine serum albumin (BSA) Triton...grow to the desired density before labeling. Section 2: Fixing and permeabilizing cells Gently aspirate the...of the diluted antibody to the wells and incubate 2 h at RT . Remove the primary antibody and dispose ... at Addgene. Equipment and reagents from other vendors should produce similar outcomes when using these...differences between products. Addgene does not endorse or recommend specific products or equipment. Inclusion...
  11. Finding Your Perfect Job After University

    Type
    Blog Post
    ...experience in cancer research After graduating with a 2:1 BSc in Molecular Biology (roughly a B average in...field with the most basic equipment and was a tremendously positive experience. I enjoyed helping people...
  12. 9 tips for a successful postdoctoral experience

    Type
    Blog Post
    ...ask new and interesting questions in your own lab. 2. Seek multiple mentors during your postdoc At the ...quality control of secretory proteins in the Endoplasmic Reticulum, optimization of fluorescent proteins...
  13. AAV Production in HEK293 Cells

    Type
    Protocol
    ...430825, 175 cm 2 Cellstack 5, Corning 3319, 3180 cm 2 Cellstack 2, Corning 3269, 1272 cm 2 Heat-inactivated...: 50 mM Tris HCl, 150 mM NaCl, 2 mM MgCl 2 Add the following to the 2 L sterile bottle: 1836 mL deionized... solution can be stored at 4 °C for up to 2 months. After 2 months, discard the tube and thaw a new working... mL of PBS. Aspirate PBS and add 2 mL of 0.05% Trypsin/EDTA. Wait ~2 min. Neutralize trypsin by adding...Cell-Stack (CS5) (Link opens in a new window) (3,180 cm 2 - the same surface area as 21 x T-175 flasks). Cell...flasks. Workflow Timeline Day 0: Seed cells in CS2 Day 2: Seed cells in CS5 Day 3 (am): Transfect cells Day...Biological Safety Cabinet 0.5–10 µL single channel pipette 2–20 µL single channel pipette 20–200 µL single channel...
  14. Lentivirus ddPCR Titration

    Type
    Protocol
    ...Activation 95 10 2 1 Denaturation 94 0.5 2 40 Annealing/Extension 60 1 2 40 Enzyme Deactivation 98 10 2 1 Hold ...diploid cells, thus the reason for multiplying by 2. $$V = 2*{copies\ RRE \over copies\ RPP30}$$ Use the viruses...diluted 2-fold serially, the concentration of RRE positive droplets should decrease by a factor of 2 across...Lentivirus is generally considered biosafety level 2+. Please ensure that you are in compliance with your...channel pipette 200–1000 µL single channel pipette 2–50 µL multichannel pipette 20–200 µL multichannel ...Detach cells by incubating with 200 µL TrypLE for 1–2 min. Resuspend cells in 500 µL DMEM complete and transfer... DG8 cartridge into the cartridge holder. Using a 2–50 µL multichannel pipet, load 20 µL of the reaction...
  15. CRISPR Guide

    Type
    Guide
    .... (2015). CPF1 is a single RNA-Guided endonuclease of a Class 2 CRISPR-CAS system. Cell , 163 (3), 759...Browse Plasmids: Double-Strand Break (Cut) Figure 2: Overview of the NHEJ repair mechanism. Multiplex ...systems enable researchers to target anywhere from 2–7 genetic loci by cloning multiple gRNAs into a single...Cas9 is included in the gRNA-containing plasmid, or 2-vector systems, in which Cas9 must be delivered separately...your experimental cell population (Figure 8E). In a 2-vector system, you’ll need to either co-infect with...the presence of infectious organisms (like SARS-CoV-2 ) and genetic mutations. Similar to Cas9 and Cas12...Cas enzymes? CasPEDIA is an encyclopedia of Class 2 CRISPR systems with wiki entries describing enzyme...
  16. Chemogenetics Guide

    Type
    Guide
    ...muscarinic receptor and has not been used in vivo. Figure 2: DREADDs, their ligands, and signaling properties.... Reference Rq(R165L) Human M3 muscarinic Arrestin-2/-3 CNO* Increase Arrestin translocation Arrestin signalling...hM1Dq hM5Dq Human M3 muscarinic G αq CNO* Increase Ca 2+ Neuronal burst firing Armbruster et al., 2007 rM3D...channels, their effect, and outcome in neurons. Table 2: Descriptions of PSAMs and their activity in neurons...FRET-modified bioluminescence. Neurophotonics 11 (2), 021005. https://doi.org/10.1117/1.NPh.11.2.021005...improved coupling efficiencies. Neurophotonics, 11 (2), 024208. https://doi.org/10.1117/1.NPh.11.2.024208...respond to small molecules that do not affect endogenous signaling, therefore allowing precise control...
  17. Protocol - How to Ligate Plasmid DNA

    Type
    Protocol
    ...10μL reaction for 5X buffer) 0.5-1μL T4 DNA Ligase H 2 O to a total of 10μL Notes: If the DNA concentrations...DNA to use. Combine the following in a PCR or Eppendorf tube: Vector DNA Insert DNA Ligase Buffer (1μL...
  18. Adenovirus Guide

    Type
    Guide
    ...use of pAdEasy-2 (Addgene #16401) can increase the capacity of the rAdV vector. pAdEasy-2 does not contain... incorporate additional genomic deletions. Figure 2: First-generation rAdV vectors. Created with BioRender.com...and have to be handled at biosafety level two (BSL-2). They are highly immunogenic and can trigger a strong...era of personalized medicine . Genes & Diseases, 4 (2), 43–63. https://doi.org/10.1016/j.gendis.2017.04.001...adenoviruses using the AdEasy system . Nature Protocols, 2 (5), 1236–1247. https://doi.org/10.1038/nprot.2007.135...Adenoviral vector vaccine platforms in the SARS-CoV-2 pandemic . NPJ Vaccines, 6 (1), 97. https://doi.org...Adenoviral backbone plasmid that lacks E1 and E3. pAdEasy-2 Adenoviral backbone plasmid that lacks E1, E3, and...
  19. Molecular Biology Reference

    Type
    Guide
    ...unique restriction enzyme recognition site (Figure 2). These elements allow for the propagation of the ...elements are summarized in the table below. Figure 2: General structure of a plasmid. Plasmid Element Description...expression, whereas weaker promoters can direct low/endogenous expression levels. For more information about...Plasmids Used for reducing the expression of an endogenous gene. This is frequently accomplished through...CRISPR technology. CRISPR is composed of a DNA endonuclease and guide RNAs that target specific locations...information and a more extensive strain list. Strain Vendor(s) Genotype BL21 Invitrogen; New England BioLabs...
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