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We narrowed to 1,060 results for: FER

Showing: 1021 - 1040 of 1060 results
  1. AAV Production in HEK293 Cells

    Type
    Protocol
    ...Vector Guides Virus Blog Posts Molecular Biology Reference Introduction This protocol can be used to produce...1272 cm 2 Heat-inactivated FBS (HI-FBS) Pro-Tip Different brands and lots of FBS can promote or inhibit ...Polyethylene Glycol 8000 (PEG) + 0.5 M NaCl Cell lysis buffer (50 mM Tris HCl, 150 mM NaCl, 2 mM MgCl2) Reagent...into phases. Aliquot and store at 4 °C. Cell Lysis Buffer : 50 mM Tris HCl, 150 mM NaCl, 2 mM MgCl 2 Add...cells, add 200 mL of DMEM complete media, then transfer the cells into a sterile bottle. Rinse the CS2...RepCap 7,265 1.00 727.6 pHelper 11,854 1.00 1,185 Transfer Plasmid 5,842 1.00 584.2 Total bp 24,961 In total...Volume Needed: 949.8 μg / 1.0 μg/μL = 949.8 μL Transfer Plasmid: 0.08 μg/bp × 5,842 bp = 468.1 μg Volume...
  2. Protocol - How to Ligate Plasmid DNA

    Type
    Protocol
    ... DNA Ligase Buffer (1μL/10μL reaction for 10X buffer, and 2μL/10μL reaction for 5X buffer) 0.5-1μL T4 ...two different enzymes for adding an insert into a vector (one enzyme on the 5' end and a different enzyme... low such that you cannot get all 100ng of DNA, buffer and ligase into a 10μL reaction, scale the reaction...necessary - being sure to increase the amount of buffer proportionally. 1μL of ligase should be sufficient...sufficient for larger ligation reactions. Because ligase buffer contains ATP, which degrades upon freeze/thaw cycles...controls. See Tips and FAQ below for details. Try different vector to insert ratios to optimize the ligation...genes and vectors, this ratio is really meant to refer to the molarity of DNA ends available for ligation...
  3. What is Polymerase Chain Reaction (PCR)

    Type
    Protocol
    ...When these reagents are combined in an appropriate buffer, a series of heating (denaturing) and cooling (...Bucket 2 μL Template DNA (10 ng-500 ng) 5 μl 10X Taq buffer with MgCl 2 1 μl dNTP mix (10 mM each nt) 2.5 μL...: 2 μL Template DNA (10 ng-500 ng) 5 μl 10X Taq buffer with MgCl 2 1 μl dNTP mix (10 mM each nt) 2.5 μL...for pipetting error. In this example, we have 7 different reactions (7 unique primer pairs), so we multiply...single 1.5mL tube combine the following: 10X Taq buffer with MgCl 2 : 5μl x 7 reactions = 35μl total + ...sequence. FAQ How do I design primers? See our reference page on how to design primers for detailed instructions...2 acts to supplement the amount supplied by the buffer stock, where it is known to form a gradient when...
  4. Molecular Biology Protocol - Restriction Digest of Plasmid DNA

    Type
    Protocol
    ...restriction digest buffer (see manufacturer's instructions) Gel loading dye Electrophoresis buffer Pipet tips ...such as a digestion with another enzyme in a different buffer), but will not be gel purifying it, you may... at specific sequences. There are hundreds of different restriction enzymes, allowing scientists to target...Sequence Analyzer . Determine an appropriate reaction buffer by reading the instructions for your enzyme. Pro-Tip...same time), you will need to determine the best buffer that works for both of your enzymes. Most companies...combine the following: DNA Restriction Enzyme(s) Buffer BSA (if recommended by manufacturer) dH 2 O up ...µg DNA 1 µL of each Restriction Enzyme 3 µL 10x Buffer 3 µL 10x BSA (if recommended) x µL dH 2 O (to bring...
  5. Isolating a Monoclonal Cell Population by Limiting Dilution

    Type
    Protocol
    ...days. Note that growth rate differences can be inferred by the differences in colony size. Figure 2: Cas9... volume of homogenized cell solution is transferred. Transfer cells from the homogenized cell solution...990 µL complete medium. Instead of transferring 0.125 µL, now transfer 100 times that volume, which is 12.5... solution, transfer 12.5 µL of the 1:100 dilution to 10 mL of conditioned medium. Transfer 100 µL of the...increased serum concentrations, may be optimal for different cell types. Before starting this procedure, be...before counting the cells. When you ultimately transfer approximately 50–100 cells to the conditioned ...
  6. Centrifugation

    Type
    Protocol
    ...liquid or separate liquids of different densities is essential to many different experimental procedures, ...likely encounter several different types of centrifuges that can accommodate different sized containers, spin... selecting and using a centrifuge to separate different components in a liquid sample. Protocols...piece of laboratory equipment used to separate different components in a liquid sample. It achieves this...spin at different speeds, or keep samples at specific temperatures. This protocol will cover the general...rotor. How to Centrifuge Now that you know the different parts of a centrifuge, you’re ready to begin using...Conclusion Centrifuges are important tools for many different protocols. Improper use of a centrifuge can damage...
  7. Coomassie Purity Stain of Recombinant Antibodies

    Type
    Protocol
    ...NP0321BOX 20X MOPS SDS running buffer, Invitrogen NP0001 4X NuPage sample buffer, Invitrogen NP0007 10X NuPage...to total 13 µL . Prepare 1X MOPS buffer Dilute 25 mL of 20X MOPS buffer into 475 mL of deionized water....with 200 µL 1X MOPS running buffer. Fill the chamber with 1X MOPS running buffer. Make sure that the chamber...may need to be adjusted to accommodate slight differences between products. Addgene does not endorse or....125 mg/mL: 10 µL of 0.25 mg/mL with 10 µL PBS Transfer 5 µL of each standard to a microfuge tube. Add... antibody to a concentration of 0.9–1.1 mg/mL. Transfer 5 µL of recombinant antibody to a microfuge tube...Procedure Section 1: SDS-PAGE Add 5 µL of 4X sample buffer to each sample. Add 2 µL 10X reducing agent to ...
  8. Transfection for Recombinant Antibodies

    Type
    Protocol
    ...may need to be adjusted to accommodate slight differences between products. Addgene does not endorse or...cell density and viability: Using a 5 mL pipette, transfer 0.5 mL of HEK293 cell suspension into a clean ...Gently swirl the flask 5–10 times before sampling. Transfer 10 µL of trypan blue into a clean microcentrifuge...microcentrifuge tube. Vortex the cell suspension. Transfer 10 µL of cell suspension into the microfuge tube containing.... Transfect the flask containing 108 mL cells: Transfer 6 mL of BCD TFX into each of two 50 mL tubes. ...tubes and incubate for 1 h in the 37 °C bead bath. Transfer the PEI-MAX and recombinant antibody plasmid DNA...After the BCD TFX has warmed in the bead bath, transfer the tubes to the biosafety cabinet. Add 180 µg...
  9. Handling Plasmids from Addgene - Purifying Plasmid DNA

    Type
    Protocol
    ...This is included in the resuspension buffer of most kits. Reference Page Top Index...bacteria transformed with your plasmid Resuspension buffer Denaturing solution Renaturing solution 2 mg/mL...ethanol or isopropanol 90% ethanol 70% ethanol TE buffer 3 M Na-acetate (pH 4.8) Protocol: Generalized DNA...Grow an overnight culture of bacteria . Pro-Tip Refer to appropriate DNA prep protocol for volume of bacteria...Remove the supernatant and resuspend the bacteria in buffer. Note: This step gets all of the bacteria back ...into suspension, but within a smaller volume of buffer that is compatible with the next solution. Add ... DNA off of the column using water or a neutral buffer such as TE. You will now have plasmid DNA that ...
  10. DNA Quantification

    Type
    Protocol
    ...samples have significantly different concentrations, it is possible that the difference between them has affected...and consistent readings from DNA in a buffered solution. Reference Page Top Index...Plasmid DNA Background Information During several different stages of molecular cloning, it is important to...particular substance in that liquid. Molecules absorb different wavelengths of light to varying degrees and most...concentration readings than a DNA sample dissolved in buffer (such as TE). You will get much more accurate and...
  11. Protocol - How to Perform a Diagnostic Digest

    Type
    Protocol
    ...restriction digest buffer (see manufacturer's instructions) Gel loading dye Electrophoresis buffer Verifying Total...below we want to know how to differentiate between two clones that differ only in the orientation of the...accurately sized on a gel and also such that they are different enough in size to be easily resolved from each...approach, it is often a good idea to choose two different enzymes that will give you unique but distinct...the expected products from each orientation are different sizes. Simply run the digest products on a gel...
  12. CRISPR Library Amplification

    Type
    Protocol
    ...Molecular Biology Reference How do I process my Addgene pooled library? Introduction Please refer to our pooled... pooled plasmids differ by only a short region of DNA: guide RNAs targeting different genes in an organism's...Picogreen, or Qubit. Each different DNA measurement type can report slightly different concentrations of DNA... Pooled libraries contain tens to millions of different plasmids in a single sample. They are often used...composition of the library. Bottlenecks, fitness differences, and plasmid recombination can all impact the...
  13. Lentivirus ddPCR Titration

    Type
    Protocol
    ... pipette 10–20 times. Use a new pipette tip to transfer 200 µL of the first dilution into the next dilution...min. Resuspend cells in 500 µL DMEM complete and transfer to a microcentrifuge tube. Centrifuge for 5 min...the DG8 gasket, making sure that it is secure. Transfer the cartridge holder to the droplet generator....while slowly and gently pipetting the droplets. Transfer the droplets to a prechilled PCR plate. Pro-Tip... 98 10 2 1 Hold 4 ∞ 2 1 After PCR is complete, transfer the plate to the Droplet Reader. Open the QuantaSoft...genome: Since the cellular gene RPP30 is used as a reference to the cellular genome, it is assumed that there... cells per well is 300,000 and the virus volume refers to the total volume the cells were transduced, ...
  14. Lentivirus Production

    Type
    Protocol
    ...Lentiviral Packaging plasmid(s), Envelope plasmid, and Transfer plasmid encoding your insert of interest Reagent...and 5 mL of glutaGRO. Store at 4 °C. Pro-Tip Different brands and lots of FBS can promote or inhibit ...1.3 pmol Envelope Plasmid ( pMD2.G ) 0.72 pmol Transfer Plasmid* 1.64 pmol OptiPro SFM to total volume...concentrations and ratios should be optimized for each transfer plasmid. Pro-Tip Endotoxins can inhibit transfection...PEI is 1:3 (1000 μL total per 10 cm dish). Using transfer plasmid pHAGE TRE dCas9-KRAB (total μg of plasmid...gives the highest percentage of GFP positive cells. Refer to the table below for a possible range of ratios...individual harvests are pooled. If pooling harvests, transfer the harvested media to a polypropylene storage...
  15. Pipetting Protocol

    Type
    Protocol
    ...Tips Although there are many different types of pipettes that have different mechanisms to disperse liquids...that the same pipette can be used for measuring different samples without cross contamination as long as...performs the same function, the numbers are read differently on each type of pipette. This section will help...Procedure How to Pipette Now that you know the different parts of the pipette, how to select tips, and ...pipette tip. Liquids of various viscosity have different flow rates. The more viscous a liquid, the lower... are pipetting the same amount of liquid into different tubes or into wells of a microplate, you may consider...
  16. Ligation Independent Cloning

    Type
    Protocol
    ...from the final product (no "cloning scars"). A “stuffer” sequence allows for electrophoretic separation...template sequence. 5' and 3' primers will have different leader sequences, but operate on the same principle...at two points by the enzyme BsaI, removing the stuffer sequence and sacB counter-selection marker (see... PCR products with sterile water (instead of TE buffer) to ensure optimal salt concentrations in subsequent... minutes. Volume (μl) Reagent Final Conc. 4 10X Buffer 1X 20-30 Eluted DNA 10-50 ng/μl 1 dGTP (100mM) ...your PCR product before proceeding, as they will interfere with the exonuclease activity of T4 Pol in the...
  17. Plasmid Cloning by Restriction Enzyme Digest (with Protocols)

    Type
    Protocol
    ...restriction enzyme buffers). If you select enzymes that can function in the same buffer, it will save you... to use, you can check out our Empty Backbone Reference . Background Subcloning by restriction digest ... a fusion protein) Ideally, you will find two different restriction enzymes for your subcloning. It is...enzymes will work in the same restriction enzyme buffer (see (Link opens in a new window) New England Biolabs...expression vector and can begin your studies. Reference Page Top Index...
  18. Gibson Assembly Protocol

    Type
    Protocol
    ...reaction mix) consists of three different enzymes within a single buffer mixture and an optional SSB protein...isothermal reaction. With the activities of three different enzymes, the product of a Gibson Assembly is a...primers to include in the Gibson reaction are different than with normal PCR primers (Gibson et al. , ... than five fragments at a time. Resources and References New England Biolabs (NEB) (Link opens in a new...
  19. General Transfection

    Type
    Protocol
    ... This approach can be adapted for different cell lines and different transfection reagents. Workflow Timeline...5 mL of 100X glutaGRO. Store at 4 °C. Pro-Tip Different brands and lots of FBS can promote or inhibit ...gives the highest percentage of GFP positive cells. Refer to the table below for a possible range of ratios...Incubate the mixture 15–20 min at RT. Carefully transfer the transfection mix to your HEK293T cells. Add...
  20. Virus Protocol - Generating Stable Cell Lines

    Type
    Protocol
    ... 5mL of 100X glutaGRO. Store at 4 °C. Pro-Tip Different brands and FBS lots can promote or inhibit transfection...efficiency of your transduction, you will see different degrees of cell death upon antibiotic selection...polyclonal populations of resistant cells start proliferating and the individual wells become confluent, expand... meaning that the transgene has integrated in different locations in the various cells in the culture....varying expression levels of the transgene from different cells in the population. Once the polyclonal populations...
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