Predict the number of bands and apparent mol. wt. of the following proteins on SDS gels. 1. Immunoglobulin G in a non-reducing gel (no β-mercaptoethanol added in the sample solution) – the light chains have a molecular weight of 25,000 Da and the heavy chains 50,000 Da.
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Predict the number of bands and apparent mol. wt. of the following proteins on SDS gels.
1. Immunoglobulin G in a non-reducing gel (no β-mercaptoethanol added in the sample solution) – the light chains have a molecular weight of 25,000 Da and the heavy chains 50,000 Da.
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- Use correct sig figs The concentration of a purified monoclonal antibody was measured using UV280 nm. The sample was diluted (200 μL of purified antibody in 800 μL buffer) prior to analysis using a spectrophotometer. Calculate the concentration of antibody in the purified fraction if the Abs=0.95 of the diluted antibody. The molar absorptivity is known to be 191,411.6 M-1cm-1 and the molecular weight is 150 kDa. The pathlength for the cuvette is 1 cm.disadvantage of using protein blastIdentification. Write in CAPITAL LETTERS. Wrong spelling, wrong. Proteins are classified according to function,examples of these classes are: _____________________, ________________________, ____________________________, ______________________________, ____________________________, ___________________________, _____________________________.
- Choice and Preparation of a Buffer System1. Choosing the proper buffer solution In Protein Precipitation, two liters of 5mM buffer solution with pH 5.2 is needed in the isolation of albumin. Which among the following buffer solution is best fitted for said purpose? Justify your answer.Buffer solutions pKa Acetate buffer 4.73Tris- (hydroxymethy) aminomethane 8.08Phosphate buffer 7.20 2. Preparation of the chosen buffer system Calculate and measure the amounts (in grams if solid and in mL if liquid) of weak acid and conjugate base needed to be able to prepare the chosen buffer system in part A above. Express your answer in useful units (that is, prepare it from practical amounts or concentrations of starting materials).Please explain!!! select all that are right the same Protein X was purified from tissue source A and tissue source B, yielding the following results: Protein X, sample A: specific activity = 100 U/mg; fold-purification = 200 Protein X, sample B: specific activity = 1000 U/mg; fold-purification = 100 Which of the following statements are correct? a) Protein X, sample A has a higher level of purity than Protein X, sample B. b) Protein X, sample B has a higher level of purity than Protein X, sample A. c) Tissue source A has a higher specific activity for Protein X than tissue source B. d) Tissue source B has a higher specific activity for Protein X than tissue source A.Predict the number of bands and apparent mol. wt. of the following proteins on SDS gels. 1. A trimeric protein containing three chains, each with a molecular weight of 60,000 Da (60 kDa).
- Help please. MD ordered morphine SO4 gr 2/5 and the pharmacist has a stock solution of gr 1/8 per milliliter of morphine SO4. How many milliliters of the stock solution is required to fill the Rx?a. State the importance of using following reagents in SDS-PAGE. 1. Acrylamide 2. Bisacrylamide 3. Tetramethylethylelediamine 4. Glycerol 5. Ammonium persulfate b. Briefly describe the importance of two dimensional electrophoresis in protein separation?PRECIPITATION OF PROTEINS What are peptides? Do all proteins possess peptide bonds? Do all proteins respond to Biuret’s test? What is the difference between coagulation and denaturation? Why is egg white used as an antidote for lead and mercurial poisoning? Explain its mechanism of action. 4.Why is silver nitrate used in the cauterization of wound? Explain your answer.
- q41 please calculate the unknown concentration of the protein D wih an absorbance value of A412 given the standard curve indicated in the table. write your answers in numbers only with 2 decimals. protein concentration (ug/ml) absorbance 0 0.000 0.02 0.161 0.04 0.284 0.06 0.438 0.08 0.572 0.10 0.762Does this calculation look correct? My goal isto have a target mass of 10 µg of my protein with a total volume of 30 µl. Protein was measured and found to have a concentration of at 308.35 µg/ml Recall, mass = concentration * volume 10 µg = 308.35 µg/ml * V V = 0.01 mg/ 0.30835 mg/mL = 0.032430679 mL = 32.43067942 µL Note: cannot measure this amount; two dilutions required. Dilute by 1/40: measure 2.5 µl of protein at 0.30835 µg/µl and add it to 97.5 diluent to prepare a solution of protein at 7.71 mg/ml. This diluted sample will be used further. Mass = concentration * volume 10 µg = 7.71 mg/ml * V V = 0.01 mg/ 7.71 mg/ml = 1.3 µL Therefore, will measure 1.3 µl of protein at 7.71 mg/ml and add it to 28.7 µl of diluent.Mention assays other than biuret and lowry assays that are used to detect the presence of proteins. Talk about the principle, the advantages, and the disadvantages.