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The SARS-Cov-2 virus is the virus that cause COVID-19. The viral protease is a known target for finding potential viral inhibitor. The activity of the viral protease can be assayed using the synthetic peptide substrate attached to 7-amino-4-carbamoylmethylcoumarin (PACC). The viral protease cleaved the substrate producing the fluorogenic ACC which can be monitored using a spectrofluorometer. The following is data from SARS-Cov-2 protease (0.1 mg of enzyme) upon reaction with various concentrations of the substrate PACC.
Plot the appropriate graphs to find:
- The approximate Vmax from the Michaelis-Menten curve.
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From the graphs given, can you find the Km from the Michaelis-Menten curve and the Lineweaver-Burke plot.
- 20191019 1. What is the component in the SIM deep tubes that makes this medium suitable to detect the production of indole by bacteria?options 120 µm 15 µm 30 µm 60 µmEffect of pH on Microbial Growth 12 10 8 Escherichia coli -Pseudomonas aureus -Staphylococcus aureus -Listeria monocytogenes 1 4 pH Minimum Optimum Maximum Escherichia coli 4.5 7 Pseudomonas aureus 4.5 7.5 9.5 Staphylococcus aureus 6.8 Listeria monocytogenes 4.5 7 9.6 Make a discussion on the experiment of the effect of pH on microbial growth. Growth Rate of Microbial 2.
- Sulfur Indole Motility (SIM) Medium H2S produced, color and +/-: ______________________________ Indole present/Tryptophan hydrolysis, color and +/-: ___________________________ Motile or non-motile: _____________________________5.15. The following data were obtained when glucose (C6H₁2O6) was added to a batch culture of microorganisms. Determine the reaction order for the disappearance of glucose. TIME. min 0 10 20 30 40 50 CONCENTRATION, g/m³ Glucose Cells 100 67 50 40 33 29 1500 1516 1525 1530 1534 1535Yeast cells are added to a 3.0 L batch bioreactor so that the initial cell concentration is [X]. = 1.3 g cells / L. The growth mediğim in the reactor, which is well-mixed so the cells have access to all nutrients, contains 150 g CELL DATA ribose (C5H10O5, MW 150), 75 g ammonia (NH3, MW 17), and 85 g oxygen (O2, MW 32). A-10. Determine the maximum concentration of cells, [X], that will form in the bioreactor when the limiting nutrient is consumed. Search Yx/ribose YX/02 YX/NH3 Specific growth rate on limiting nutrient, u Lag phase duration Deceleration phase duration 0.48 g/g 0.87 g/g 0.23 g/g 0.51 h 30 minutes Negligible
- Figure 3: ● ● ● ● ● ● KDa ● 97.4 66.2 45.0 ● 31.0- 21.5 14.4 S-1 p-1 S-2 2-0 This figure was generated by centrifuging a pura sample of protein, removing the supernatant, and resuspending the pellet in the same volume as the supernatant to allow direct comparison. The supernatant and pellet samples were then prepared for SDS-PAGE identically and run via normal SDS-PAGE procedures. In the figure, "s" means supernatant and "p" means pellet. The text or number after the dash represents a different condition. For example, s-1 and p-1 are the supernatant and pellet samples under condition 1. It is not shown, but under wild-type conditions, essentially all of the protein is found in the supernatant. S-3 ● What does the intensity of each band represent? ● Would you find soluble protein in the supernatant or pellet? Why? Would you find aggregated protein in the supernatant or pellet? Why? For each condition (there are 5 different conditions), is there a higher percentage of the total protein…The concentration of hydrolyzed nitrocefin at each time point for an experiment is given below. Time (min) Concentration (μM) 0.5 6.01 1 11.78 1.5 17.6 2 23.51 2.5 29.58 3 35.31 3.5 39.73 4 44.5 4.5 48.18 5 50.05 5.5 52.72 6 54.01 6.5 55.06 7 55.65 7.5 56.39 8 56.74 8.5 57.49 9 58.03 9.5 58.61 10 58.69 Make a graph that plots the concentration of hydrolyzed nitrocefin (in μM) against time (in seconds) using Excel, R, SPSS or other computable software. Where appropriate, include a trendline that shows the linear range on your graph. Include the equations for the trendlines and the R2 value on the graph. Your graph should also include a title and appropriate titles for the x- and y-axes, with units included where appropriate. To determine the initial velocity of a possible insert in this experiment, you must determine what the linear range is in these data (see note below). Based on your graph, which time points represent a suitable linear…Given this, if you used 6g of vitamin Z powder to make 20 ml of solution, what is the % concentration of this solution? (I gave the image since I don't know if that info is needed to solve this question.)It also gives a follow-up, if you can help here too: You work in a lab as a summer student. One of your tasks is to make sure that there is enough cell culture medium containing antibiotics to grow bacteria. One day you realize that there is only 5 ml of 10% Antibiotic stock solution in the freezer. You decide to use it all to prepare the working culture medium with 0.01% antibiotic. In the lab there is plenty of growth medium without antibiotics. (Note: dilution in medium is like dilution in water). You remember the equation to make dilutions of stock solutions. You usually use this formula to calculate the required volume of a stock solution, but you realize it can apply here as well, even though the unknown is the final volume. So, you make that dilution. Given that each bacterial…
- 23:26 A ll 51%A Your answer 2- Describe briefly the factors to be considered before accepting raw materials of the food product from producer. Quality aspects, problems during sampling, safety, storage conditions, package, etc... Your answer 3- List in proper order the processing steps to produce the food product. Instead of drawing the flowchart of unit operations, write the processing steps in proper order from raw materials to final product Your answer 4- Name the heat transfer technique (s)/ machine(s) involved in processing of this food product. List its/their advantages and disadvantages. Your answerNutrient Agar (NA) is a general purpose medium used for the cultivation of a wide variety of non- fastidious microorganisms (Merck, 2000). Its ingredients are listed in Table 2. You are tasked to prepare 300ml of NA, determine the amount of ingredients and write in column 3 in Table 2. Show your calculations. *A sample calculation was made for you. Peptone = 300 ml x 0.5% = 1.5 g Table 2. Medium Composition of Nutrient Agar (NA) with the recommended proportions (Merck, 2019) Ingredients In % In Grams/300ml Peptone 0.5 *1.5 Meat extract 0.3 Agar 1.5 Distilled Water As needede) A cyclic AMP (CAMP) binding protein was isolated from mammalian cells_and characterized by equilibrium dialysis experiments (data are shown below). This protein was present in the dialysis bags at 16 µM. iii) Concentration of CAMP (μM) Outside bag 0.7 2.3 4.5 10.0 30.0 70.0 150.0 Inside bag 2.7 8.3 15.0 26.0 54.0 98.0 180.0 Using a Scatchard plot, estimate the Kd for the CAMP. Estimate the number of biding sites per protein molecule. What other information could be obtained from this analysis?