Preview

Bacteria and Plasmid to Produce Red Fluorescent Proteins

Better Essays
Open Document
Open Document
2536 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Bacteria and Plasmid to Produce Red Fluorescent Proteins
Bacterial Transformation Bacteria and plasmid to produce Red Fluorescent Proteins Alejandra Lopez Biology 124L
Abstract
A transformation in the literal sense of the world was witnessed in 1928 by Fredrick Griffith. A living organism had changed in physical form. The purpose of this study is to produce recombinant DNA molecules to produce bacteria that would transform into red fluorescent proteins. One plasmid was that allowed to express a red fluorescence was produced by recombining two plasmids by using molecular techniques. Agar plates labeled LB, LB/AMP, and LB/AMP/ARA containing ampicillin (AMP) and arabinose (ARA) were used to grow of the bacteria of interest and SDS-PAGE gels were utilized in identifying the fluorescent and non-fluorescent proteins. The end results illustrated that there were no signs of fluorescent proteins in the gel bands and there were red fluorescing bacteria in the LB/AMP plate that should not have been. The agars contained in all three plates was exposed to arabinose, and there is a possibility that the plates were labeled incorrectly causing the unsuccessful results.

Introduction According to the hypothesis proposed by George Beadle and Edward Tatum in 1940, the transforming principle involved one or more genes to produce enzymes needed to synthesize the polysaccharide coat. Biochemical tests revealed it to be deoxyribonucleic acid (DNA). Watson Crick Discovered the elegant structure of the DNA and the molecular genetics was born which eventually lead to



References: Cited Crameri,A., Whitehorn,E.A., Tate,E. and Stemmer,W.P. 1996. Improved green fluorescent protein by bacterial transformation. Nat. Biotechnol. 14 (3), 315-319 Meike Sorensen, Christoph Lippuner, Toralf Kaiser, Ana Miblitz. 2003. Rapidly mauring red fluorescent protein varients with strongly enhanced brightness in bacteria. FEBS: 110-114 Arkady F. Fradkov, Ying Chen, Li Ding, Ekaterina V. Barsova, Mikhail V. Matz, Sergey A. Lukyanov. 2000. Novel Fluorescent potein from Discosoma coral and its mutants possesses a unique far-red fluorescence. FEBS: 127-130

You May Also Find These Documents Helpful

  • Better Essays

    Anthrax Research Papers

    • 1003 Words
    • 5 Pages

    Edema factor (EF) is an adenyl cyclase enzyme. It attacks ATP, turns it into cyclic AMP, and creates an endless signaling loop that disrupts cell function…

    • 1003 Words
    • 5 Pages
    Better Essays
  • Powerful Essays

    So biomedical engineers at Georgia Tech whipped up a special batch of maltohexaose, adding a molecule called a fluorescent tag. When struck by the correct wavelength of light, these molecules glow. (They absorb and then re-emit the light.)…

    • 1552 Words
    • 7 Pages
    Powerful Essays
  • Powerful Essays

    Liao, Tffany The marine bacterium Vibrio Fischeri produced bioluminescence effect due to lux operon transcription. The purpose of the experiment is to create a genomic library of Vibrio DNA and clone the lux operon by making Recombinant DNA and transform into another organism, E. Coli. Chromosomal DNA of vibrio fischeri was first extracted and digested with restriction enzyme Sal I, then ligated with the vectors and transformed into the E. Coli cells. A few white colonies indicating the E. Coli cells took up the hybrid plasmids were observed on the plate but no glowing colonies were detected. The lux operon was not successfully cloned in this experiment.…

    • 5190 Words
    • 21 Pages
    Powerful Essays
  • Satisfactory Essays

    La Agar Media Case Study

    • 562 Words
    • 3 Pages

    Therefore, based on the results obtained, the isolated Bioluminescent Bacteria could be of Genus Photobacterium and species of Photobacterium…

    • 562 Words
    • 3 Pages
    Satisfactory Essays
  • Good Essays

    Mazel, C. H., Cronin, T. W., Caldwell, R. L., and N. J. Marshall. 2004. Fluorescent Enhancement of Signaling in a Mantis Shrimp. Science 303: 209-215.…

    • 325 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    pGlo transformation

    • 1871 Words
    • 8 Pages

    You will use a procedure to transform bacteria with a gene that codes for Green…

    • 1871 Words
    • 8 Pages
    Powerful Essays
  • Satisfactory Essays

    therrhrhr

    • 473 Words
    • 2 Pages

    Discussion: The results I got were expected because safranin is used to visualize the otherwise colorless gram-negative bacteria whose much thinner peptidoglycan layer does not retain crystal violet. Stains and dyes are widely used in the scientific field to highlight the structure of the biological specimens, cells, tissues etc. Gram-positive bacteria have a thick mesh-like cell wall which is made up of peptidoglycan (50-90% of cell wall), which…

    • 473 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Appears As Grape

    • 1007 Words
    • 4 Pages

    Red-color dye can bind specifically to the peptidoglycan molecule, Gram positive cell can be stained better.…

    • 1007 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    a: © Robley C. Williams/Biological Photo Service; b: © Courtesy of R. C. Valentine and H. G. Pereira. Reprinted from Journal of Molecular…

    • 2528 Words
    • 31 Pages
    Powerful Essays
  • Powerful Essays

    The purpose of these series of experiments was to express and purify recombinant Green Fluorescent Protein (rGFP) from the E. coli strain, BL21(DE3) by beginning with its purification via a Ni2+-agarose affinity chromatography column. The His6 tag of the rGFP bound to the Ni2+-agarose column and washes and elutions were obtained, with elution 3 containing the most amount of fluorescence at approximately 12,000 RFUs. From here, a Bradford assay was performed in order to determine how much protein was in each sample and an SDS-PAGE/Coomassie Blue analysis was done to determine the size and purity of rGFP in the elution 3 sample. The sample came out to be about 34 kDa and was about 75% pure. Lastly, a Western Blot was performed with binding of primary and secondary antibodies to prove that the protein of interest, rGFP, had indeed been expressed and purified.…

    • 3142 Words
    • 13 Pages
    Powerful Essays
  • Powerful Essays

    Abstract: Application of fluorescent fusion proteins to the field of expression and interaction proteomics as a means of dynamic imaging proteins in vivo has allowed for rapid advancements in biotechnology research. Production of such proteins first involves the insertion of a given protein-coding gene transcriptionally in-frame with a fluorophore sequence under the control of a single promoter and terminator. With reference to this experiment, successful BamHI and PstI digestion of both pHSG-WZB donor (coding for wzb tyrosine phosphatase) and pT5(6H)CFP recipient vectors allowed for ligation formation of pT5WZB(6H)CFP (coding for desired fluorescent fusion protein). Transformation into competent E.coli and plating against TE buffer and pHSG-WZB controls experimentally disputed theoretical expectations as ampicillin resistance (50725 cfu/mL) and fluorescence (93%) along with kanamycin resistance (66800 cfu/mL) and non-fluorescence were displayed, suggesting ineffective fragment ligation. Using effectively ligated transformants, screening for positive clones via plasmid extraction and PstI and XhoI digestion displayed two expected fragments; pT5 (experimental: 2339 bp) and cfp-wzb (experimental: 1198 bp). SDS-PAGE analysis of auto-induced positive clone cell lysate revealed the expression of the cfp-wzb fusion protein (experimental: 44.3 kDa). Using a hexahistidine tag, successful fusion protein purification was achieved via nickel affinity chromatography and confirmed by SDS-PAGE. Finally, para-nitrophenyl phosphate assay of tyrosine phosphatase activity allowed for determination of wzb kinetic properties such as Km (6.34 mM) and Vmax (0.0644 µmol/min/mg). Gaining an experimental competency in formation, detection and use of specific fusion proteins will ultimately allow for the…

    • 5476 Words
    • 19 Pages
    Powerful Essays
  • Good Essays

    Finally, go to Colors > Brightness-Contrast... and increase the contrast by about 30%. You can adjust this to optimize the appearance of the fluorescent signal while still including the shape of the visible cell.…

    • 457 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Molecular Biotechnology: Principles and Applications of Recombinant DNA, Fourth Edition by Bernard R Glick, Jack J Pasternak and Cheryl L Patten. 2010. ASM Press, American Society for Microbiology, Washington DC.…

    • 8488 Words
    • 34 Pages
    Powerful Essays
  • Powerful Essays

    Professor

    • 4270 Words
    • 18 Pages

    15) Arakane Y, Hoshika H, Kawashima N, Fujiya-Tsujimoto C, Sasaki Y and Koga D, Biosci. Biotechnol. Biochem., 64, 723-730 (2000).…

    • 4270 Words
    • 18 Pages
    Powerful Essays
  • Good Essays

    Sybrsafe Case Study

    • 746 Words
    • 3 Pages

    SYBRSafe is a dye for DNA staining to determine the presence of DNA fragment in gel electrophoresis. The SYBRSafe performs like ethidium bromide that binds to DNA fragment. SYBRSafe is excited by UV or strong light (e.g. blue light) and emits fluorescent signal which is proportional to the concentration of DNA in the gel (Thermofisher Scientific, 2011). In this experiment, SYBRSafe is used for the detection of mutant OFP gene and the corresponding Plasmid DNA, pRSET vector after restriction digestion by KpnI and HindIII. Signal strength of SYBRSafe can be one of the parameters to measure the efficiency of restriction digestion.…

    • 746 Words
    • 3 Pages
    Good Essays