Dna Purification Research Paper

Improved Essays
DNA purification: To get pure DNA to use, a silica membrane was used to collect the long DNA strands. We started by adding 5 volumes of PB buffer to 1 volume of each PCR reaction. We put column and the silica wafers into tubs and pipetted the DNA samples onto the wafers. We centrifuged the tubes for a minute and disposed of the waste. After that we pipetted 0.75 ml of buffer PE to the samples and spun it for another minute then disposed of the waste. The columns were added to the tubes and spun for a minute in the centrifuge to dry then planed in new clean tubes. Without touching the wafers with the pipet tip, 50µl of elution buffer EB was added to the columns then left for a minute and centrifuged for a minute. The liquid collected at the …show more content…
The entire (500 µl) mixture was pipetted onto a purification column and spun for 2 minutes in the centrifuge. The filtered waste was disposed of and the column was placed into the tube. 500 µl of wash buffer was added to the column then spun in the centrifuge for another two minutes and the waste was put in the waste container. This washing procedure was repeated once more. After tossing the waste on the second cycle, the column was spun to dry and then transfer to a clean tube labelled with the date and Thread or DRP1. We added 100 µl of elution solution on top of the column and incubated tube for 2 minutes at 69°C. After the incubation period, the tube was centrifuged for 3 minutes. The liquid collected in the tube contains the dsRNA and was put on ice to await the next …show more content…
For the DRP1 samples we set up tubes labelled A, B, and C. Tube A contained 249.5 µl of serum free media and 0.5 µl Mito-GFP plasmid. Tube B contained 224.5 µl serum free media, 0.5 µl mito-GFP plasmid, and 25 µl DRP1 dsRNA. Two tube C were premade and contained 240 µl and 10 µl cellfection liposome solution. After the tubes were mixed by hand, 250 µl of tube C was added to A and B and mixed gently before being incubated for 30 minutes.
Examining Phenotypes and Microscopy: To examine the results of thread manipulation, we captured images of the control and affected Thread cells. We used a light microscope with an HDMI port attached to a computer. We photographed both controlled and affected samples three times each. The slide images were saved onto the laptop and sent to the group member’s emails.
To examine the results from the DRP1 gene inhibition, the cells had to be injected with mito-GFP. Mito-GFP is a green fluoresces gene from jellyfish. The GFP insertion allowed us to examine the mitochondria in the cells with a fluorescence microscope. This microscope takes three versions of the image and we took three different images from both the dsRNA DRP1 and controlled samples. The images were saved onto the computer and uploaded onto the lab’s Blackboard

Related Documents

  • Great Essays

    Egfp Lab Report

    • 3655 Words
    • 15 Pages

    Scientists in this day and age are now able to change DNA and create recombinant DNA, which is a huge indication of great possibilities for the future of genetics. The goal of these lab experiments was to be able to create recombinant DNA with the insert of egfp gene. EGFP also known as Enhanced Green Fluorescent Protein was originally isolated from the jellyfish Aequorea Victoria and was introduced into the scientific field as a tool to signal gene expression. When EGFP is exposed to Ultraviolet Light, the protein glows a very…

    • 3655 Words
    • 15 Pages
    Great Essays
  • Decent Essays

    Nt1310 Lab 6.1

    • 408 Words
    • 2 Pages

    In Procedure 6.1, two different gels were used. One gel was 2.0% agarose while the other gel was 0.8% agarose. The reason we poured two gels was because each gel had a different purpose. The 2.0% agarose (thicker gel) was used to determine amplicons while the 0.8% agarose (thinner gel) was used for restriction fragments. One gel was ‘thicker’ than the other gel to distinguish smaller segments than the thinner gel. By having a thicker gel, smaller segments can move better and not be cleared out by bigger segments. Polymerase Chain Reaction (PCR) is used to replicate DNA. In Lab 5, we created PCR amplicons by collecting our own DNA through our cheek cells, adding Taq DNA polymerase, dNTPs, primer, and a proper buffer solution into a PCR tube.…

    • 408 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    3.05 Dna Research Paper

    • 522 Words
    • 3 Pages

    8. rRNA is just ribosomal RNA. Protein synthesis is the synthesis of polypeptide chains which then produce the specific proteins based on the genetic code in DNA. It occurs in two stages, transcription and…

    • 522 Words
    • 3 Pages
    Improved Essays
  • Decent Essays

    Several Advancements in technology produced a fast DNA sequencer in the 70’s, and in 1983, Karv Mullis created what is called Polymerase Chain Reaction (PCR). PCR is a very simple and inexpensive technology that is used to amplify and produce large amounts of copies of a segment of DNA. Now this has become one of the most significant scientific advances in molecular biology, PCR amplification is used every day to diagnose diseases, its also used to identify bacteria and viruses, and to match criminals to crime scenes. PCR has revolutionized the study of DNA to such an extent that Dr. Mullis was awarded the Nobel Prize in Chemistry in 1993.…

    • 110 Words
    • 1 Pages
    Decent Essays
  • Superior Essays

    Average Beats Per Minute

    • 2171 Words
    • 9 Pages

    Skinner, G., Harbord, R. and Lees, E. (2009). Edexcel A2 biology revision guide. Harlow: Edexcel.…

    • 2171 Words
    • 9 Pages
    Superior Essays
  • Superior Essays

    PCR is used to magnify the 16S rRNA gene and is used in molecular biology to make thousands of copies of the magnified DNA. There are three main stages that the PCR carries out, the first is denaturing when the double-stranded DNA is separated into two strands. Second, annealing which enables the DNA primers to attach to the DNA when the temperature is lowered. Lastly, extending which is when a new strand of DNA is created by the Taq polymerase enzyme when the temperature is raised. This process is run in cycles 29 times and takes approximately 4 hours to complete. The PCR test was completed prior to the testing and was then given to each student to perform gel electrophoresis. The gel electrophoresis technique is used to separate DNA fragments and the size of the fragments determines how fast the fragments will move through the gel. This process is used to ensure that the PCR worked. To analyze the PCR, a sample mixed with the PCR and loading dye is loaded into a well in the ladder. Once the samples are loaded, the mini gel system can be turned on and begin the process of separating the DNA fragments. Once the machine had run for 30 minutes, the gel was observed in UV light to see if the PCR sample that was created…

    • 1419 Words
    • 6 Pages
    Superior Essays
  • Improved Essays

    Caenorhabditis elegans is a common organism that is used in many experiments due to its easy upkeep, low cost, short life cycle, fast reproduction, large reproduction size, and genetic manipulability with transparent body structure (Maxwell C. K. Leung, Phillip L. Williams, et al.). The use of C. elegans has allowed many discoveries to be made throughout history. One experimental technique that enhances their use is a green fluorescence protein (GFP), this allows different regions of the C. elegans to be highlighted for particular uses (Maxwell C. K. Leung, Phillip L. Williams, et al.). For one strain of C. elegans, SRU1, the GFP was fused to the promoter of CYP13A7 so it is considered a transcriptional fusion (Chakrapani, Baby…

    • 794 Words
    • 4 Pages
    Improved Essays
  • Decent Essays

    Muscle Contraction

    • 360 Words
    • 2 Pages

    allow its attachment to the neighboring troponin site due to hydrolysis of ATP in ADP + Pi.…

    • 360 Words
    • 2 Pages
    Decent Essays
  • Improved Essays

    Both tubes were labeled, one being positive pGLO, and the other negative pGLO. Then, using a long sterile loop, each group picked up a single colony of E. coli that was then mixed throughout the positive tube and returned back to the ice. The same was then done for the negative pGLO tube. With a new sterile loop, each lab group obtained a sample of pGLO plasmid DNA and submerged it into only the positive tube and placed it back into the ice. Each group then received four Luria Bertani broth nutrient agar plates and labeled them +pGLO LB/amp, +pGLO LB/amp/ara, -pGLO LB/amp, and –pGLO LB, the amp standing for ampicillin and the ara for arabinose. After both the tubes had been chilled in the ice for ten minutes they were placed on small floatation devices and placed directly into a tub of 42 degree Celsius water for no more than 50 seconds, simulating the heat shock treatment. Immediately after removing them from the water, the tubes were back in the ice filled beaker for another two minutes. When the two minutes was up the tubes were taken out of the ice and each had 250 μl of nutrient broth mixed in them and left to sit at room temperature for ten minutes. After sitting for all…

    • 803 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Pix And Git Fat

    • 998 Words
    • 4 Pages

    To do so, two cells with DAPI (blue) and added Venus fluorescent proteins (Green) were tagged. These proteins are only detectable when there is a dimerization of Hpo. The first cell, which just included the Hpo kinase- dead proteins (HpoVc-VN), exhibited no green fluorescence meaning that Hpo did not dimerize (Figure 4A). The second cell, which included Pix and Git as well as of HpoVc-VN, showed a large amount of green fluorescents (Figure 4B). This means that Pix and Git are necessary to form the Hpo dimer. Figure 4C shows the relative levels of the fluorescent intensity meaning the higher the intensity the more Hpo dimers there are in the cells. Hpo with Pix and Git as well as Hpo, Sav with Pix and Git exhibited the much more fluorescents than any of the other cells since both Pix and Git were present in this cell as well as Hpo (Figure 4C). The phosphorylation of Hpo at its activation loop (T195) when Pix and Git were present alone and together where the tested. Western blots in which Hpo, Pix, and Git were tagged revealed that the largest quantity of phosphorylated Hpo was present when both Pix and Git were present (Figure 4D). The phosphorylation of Hpo also occurs directly by Pix and Git and not through any other means since the most amount of phosphorylated Hpo…

    • 998 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    DNA makes proteins. DNA is stored in the nucleus and contains phosphates (a phosphate includes nitrogen bases). DNA is made up of these phosphates, but, in making polypeptides, or a protein, the nitrogen bases are the most important in his process. To make a polypeptide, the helicase unzips the double helix figure, making two rows, or strands, which are one side of all of the nitrogen bases. Floating nitrogen bases string the opposite of these sides, to make an original copy, but leave, ending in one strand of the opposite, original DNA strand. This is called mRNA, and the process of transcription is the process of the mRNA copying the original DNA strand and becoming a second strand. Because DNA is a double helix, it is two wide to fit through the nucleus, but the new mRNA can travel through the nucleus, because it is only one strand.…

    • 400 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    One such method is to use the ratio of the absorbance at the λmax of nucleic acids to that of the absorbance at the λmax of proteins. If the isolated genomic DNA is relatively pure, then the A260/A280 ratio should be approximately around the range of 1.6 to 1.9. Based upon completion of the calculations, the A260/A280 ratio was found to be 1.877 (Table 1) indicating that the isolated genomic DNA is pure. However, not only can the absorbance max be used to measure the purity of the nucleic acids, but it can also be used to measure the concentration of genomic DNA. Using the calculation DNA (µg) = A260 x 50 µg/(1 A260 x 1 ml) x dilution factor x total sample volume (ml), the concentration of DNA was calculated to be 25…

    • 572 Words
    • 3 Pages
    Improved Essays
  • Superior Essays

    Next, we placed the tube of supernatant in the ultracentrifuge and spun it at 10000rpm for 20 minutes. Students then added 1.5ml of the supernatant in two different microcentrifuge tubes labeled “post- mitochondria.” The rest of the supernatant was placed in a test tube labeled “post mitochondria” for use in activity A4. The pellet was re-suspended after 4.0ml of homogenization buffer was added. 1.5ml of this solution was placed in two different microcentrifuge tubes labeled “mitochondria.” The remaining solution was appropriately thrown…

    • 1043 Words
    • 5 Pages
    Superior Essays
  • Improved Essays

    Cell Lysis Lab Report

    • 585 Words
    • 3 Pages

    Obtain the mammalian expression vector for homo sapien ESR2 from Addgene. Assemble the vector to code for the proteins snail, slug and twist. Transfect HEK293 cells with the modified plasmids in petri dishes. Allow the cells to grow for 1-2 days so they will express the proteins.…

    • 585 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    The first assay contains both PGEX-F1 primer and PGEX-R primer. Both primers enable to do replication with PCR in both Watson(top) strand and Crick(bottom). The presence of Saw1 insertion gene will not matter in this assay. Therefore, the known and unknown will not show a difference in bands generated from the PCR and Gel electrophoresis.…

    • 734 Words
    • 3 Pages
    Improved Essays

Related Topics