Homework Answers
The intensity of a band on the gel it proportional to the concentration of that peptide in the sample.
One band on the gel represents one type of peptide, not one protein. A protein may have one or more than one peptide chains.
To find the molecular weight of one band on the gel, use molecular ladder whose weight is known to us. It is given in lane 1.
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2) The following image shows an SDS-PAGE gel: 1 2 3 4 - 5...
SDS Page Gel: The provided standard protein sample for electrophoresis consists of 9 polypeptides with molecular...
SDS Page Gel:
The provided standard protein sample for electrophoresis
consists of 9 polypeptides with molecular weights ranging from 250
to 15 KDa.
Sample 1: Protein A in a sample buffer with
B-Mercaptoethanol
Sample 2: Protein A in a sample buffer without
B-Mercaptoethanol
Sample 3: Protein B in a sample buffer with
B-Mercaptoethanol
Sample 4: Protein C in a sample buffer without
B-Mercaptoethanol
Use the picture below & the information about the proteins
above to answer the following questions.
1a....
please help Tor F. A) High molecular weight proteins will migrate farther during gel electrophoresis (SDS-PAGE)....
please help
Tor F. A) High molecular weight proteins will migrate farther during gel electrophoresis (SDS-PAGE). d) B-sheet protein structures can be stabilized by hydrogen bonding between distant residues on the same polypeptide. e) B-sheets are a type of secondary structure and are found in every protein.
Proteins: BSA, yeast ADH, ovalbumin, lysozyme . Discuss how you were able to determine which protein...
Proteins: BSA, yeast ADH, ovalbumin, lysozyme
. Discuss how you were able to determine which
protein was in which lane. You will have to do some
online research to find the molecular weight of each protein,
whether it is a dimer, etc. For at least one of the proteins, there
is some variability regarding the molecular weight, but the range
should still allow you to determine which lane each of the proteins
is in. For each lane, pay attention to...
4) Make a sketch of a gel after SDS-PAGE successful experiment performed with the 5 samples...
4) Make a sketch of a gel after SDS-PAGE successful experiment performed with the 5 samples containing the following proteins and the mixed Markers that are shown below in the picture: Lysozyme 14 kDa Carbonic anhydrase 31 kDa Ovalbumin 45 kDa Bovine Serum Albumin 66 kDa Mysin 200 kDa ColorPlus Prestained Protein Marker, Broad Range APPARENT PROTEIN SOURCE MW (kDa) MBP-B-galactosidase 175 E COW MBP-truncated-3-galactosidase E.coli MBP-CBD Ecol CBD-Mxe Intein-2CBD [ Chi CBD-More Intein E.coli 30 CBD-E. coli par E.coli...
Confused on how to answer questions E, F, and G. The answer for E is Cysteine,...
Confused on how to answer
questions E, F, and G.
The answer for E is Cysteine,
F (i) is 2
F (ii) is 2
F (iii) is 180
Question 5. Protein X, a protein that binds tyrosine tightly, can be purified in three chromatography steps: 1) affinity chromatography using a tyrosine resin, 2) gel filtration chromatography using a resin with a separation range of 30-200 kDa, and 3) anion exchange chromatography run at pH 7.6. The elution profiles for Steps...
The next question concerns the SDS-PAGE figure below. Lane 1 contains an unknown sample. Lane M...
The next question concerns the SDS-PAGE figure below. Lane 1 contains an unknown sample. Lane M contains a mixture of the following proteins (listed alphabetically). M 1 P1 - - Protein Bovine carbonic anhydrase Bovine milk aprotinin Bovine milk lactalbumin Bovine serum albumin Beta-galactosidase Chicken egg ovalbumin Rabbit muscle myosin Soybean trypsin inhibitor Molecular Mass 29,000 6,500 14,200 66,000 116,000 45,000 205,000 20,000 - - P3 - P4 L 19. The wild type (normal) human B-chain hemoglobin protein has a...
1. Figure I shows an SDS-PAGE gel. A) Rank the 3 proteins by size, from largest...
1. Figure I shows an SDS-PAGE gel. A) Rank the 3 proteins by size, from largest to smallest. Explain why this trend is observed in SDS-PAGE gels. B) What is the purpose of SDS in SDS-PAGE? C) Sample L is the ladder. What is its purpose? D) Typically, PA (polyacrylamide) is used as the gel for protein electrophoresis, whereas agarose is used for DNA electrophoresis. Explain why a different gel material is used, Specifically referring to the pore size of...
Exercise IV. Fill in the Blank 1. The method of Centrifugation, polyacrylamide gel electrophoresis, western blotting,...
Exercise IV. Fill in the Blank 1. The method of Centrifugation, polyacrylamide gel electrophoresis, western blotting, affinity purification) is the most widely used technique for determining the approximate molecular weight of a protein. 2. (Centrifugation, affinity chromatography, sonication, gel electrophoresis) is a method in which macromolecules are separated due to their size, charge, and other physical properties 3. SDS-PAGE is a form of electrophoresis in the presences of a/an (acidic solution, basic solution, anionic detergent, cationic detergent). 4. SDS not...
parts a,b, c please 3. Sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis a. After pouring the...
parts a,b, c please
3. Sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis a. After pouring the SDS polyacrylamide gel, you realize that instead of 2 ml, you used 4 ml of 30% acrylamide/bisacrylamide solution for the preparation of the separating gel (in both cases for 5 ml, total gel volume). How would this affect the separation of your proteins during SDS PAGE? Explain your answer! b. You have to remake the gel and are now making sure just to add...
I need help with all parts please. Compare Lanes 1 and 2? What question is being...
I need help with all parts please.
Compare Lanes 1 and 2?
What question is being asked?
What is the results
B.) Compare Lanes 3 and 4?
How tight of a protein-protein association exists?
Cytosol Anti-Dnak IP Anti-Dnak IP -Dnak -Dnak IIIIIIII Proteins bound to Dnak (Arb. Units) 1 2 3 4 5 6 0 2 8 10 4 6 Time (min) i Time (min) Adnak wt Adnak wt after 1% SDS labeled Adnak +unlabeled wt Figure 1. Transient...
SDS Page Gel:
The provided standard protein sample for electrophoresis
consists of 9 polypeptides with molecular weights ranging from 250
to 15 KDa.
Sample 1: Protein A in a sample buffer with
B-Mercaptoethanol
Sample 2: Protein A in a sample buffer without
B-Mercaptoethanol
Sample 3: Protein B in a sample buffer with
B-Mercaptoethanol
Sample 4: Protein C in a sample buffer without
B-Mercaptoethanol
Use the picture below & the information about the proteins
above to answer the following questions.
1a....
please help
Tor F. A) High molecular weight proteins will migrate farther during gel electrophoresis (SDS-PAGE). d) B-sheet protein structures can be stabilized by hydrogen bonding between distant residues on the same polypeptide. e) B-sheets are a type of secondary structure and are found in every protein.
Proteins: BSA, yeast ADH, ovalbumin, lysozyme
. Discuss how you were able to determine which
protein was in which lane. You will have to do some
online research to find the molecular weight of each protein,
whether it is a dimer, etc. For at least one of the proteins, there
is some variability regarding the molecular weight, but the range
should still allow you to determine which lane each of the proteins
is in. For each lane, pay attention to...
4) Make a sketch of a gel after SDS-PAGE successful experiment performed with the 5 samples containing the following proteins and the mixed Markers that are shown below in the picture: Lysozyme 14 kDa Carbonic anhydrase 31 kDa Ovalbumin 45 kDa Bovine Serum Albumin 66 kDa Mysin 200 kDa ColorPlus Prestained Protein Marker, Broad Range APPARENT PROTEIN SOURCE MW (kDa) MBP-B-galactosidase 175 E COW MBP-truncated-3-galactosidase E.coli MBP-CBD Ecol CBD-Mxe Intein-2CBD [ Chi CBD-More Intein E.coli 30 CBD-E. coli par E.coli...
Confused on how to answer
questions E, F, and G.
The answer for E is Cysteine,
F (i) is 2
F (ii) is 2
F (iii) is 180
Question 5. Protein X, a protein that binds tyrosine tightly, can be purified in three chromatography steps: 1) affinity chromatography using a tyrosine resin, 2) gel filtration chromatography using a resin with a separation range of 30-200 kDa, and 3) anion exchange chromatography run at pH 7.6. The elution profiles for Steps...
The next question concerns the SDS-PAGE figure below. Lane 1 contains an unknown sample. Lane M contains a mixture of the following proteins (listed alphabetically). M 1 P1 - - Protein Bovine carbonic anhydrase Bovine milk aprotinin Bovine milk lactalbumin Bovine serum albumin Beta-galactosidase Chicken egg ovalbumin Rabbit muscle myosin Soybean trypsin inhibitor Molecular Mass 29,000 6,500 14,200 66,000 116,000 45,000 205,000 20,000 - - P3 - P4 L 19. The wild type (normal) human B-chain hemoglobin protein has a...
1. Figure I shows an SDS-PAGE gel. A) Rank the 3 proteins by size, from largest to smallest. Explain why this trend is observed in SDS-PAGE gels. B) What is the purpose of SDS in SDS-PAGE? C) Sample L is the ladder. What is its purpose? D) Typically, PA (polyacrylamide) is used as the gel for protein electrophoresis, whereas agarose is used for DNA electrophoresis. Explain why a different gel material is used, Specifically referring to the pore size of...
Exercise IV. Fill in the Blank 1. The method of Centrifugation, polyacrylamide gel electrophoresis, western blotting, affinity purification) is the most widely used technique for determining the approximate molecular weight of a protein. 2. (Centrifugation, affinity chromatography, sonication, gel electrophoresis) is a method in which macromolecules are separated due to their size, charge, and other physical properties 3. SDS-PAGE is a form of electrophoresis in the presences of a/an (acidic solution, basic solution, anionic detergent, cationic detergent). 4. SDS not...
parts a,b, c please
3. Sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis a. After pouring the SDS polyacrylamide gel, you realize that instead of 2 ml, you used 4 ml of 30% acrylamide/bisacrylamide solution for the preparation of the separating gel (in both cases for 5 ml, total gel volume). How would this affect the separation of your proteins during SDS PAGE? Explain your answer! b. You have to remake the gel and are now making sure just to add...
I need help with all parts please.
Compare Lanes 1 and 2?
What question is being asked?
What is the results
B.) Compare Lanes 3 and 4?
How tight of a protein-protein association exists?
Cytosol Anti-Dnak IP Anti-Dnak IP -Dnak -Dnak IIIIIIII Proteins bound to Dnak (Arb. Units) 1 2 3 4 5 6 0 2 8 10 4 6 Time (min) i Time (min) Adnak wt Adnak wt after 1% SDS labeled Adnak +unlabeled wt Figure 1. Transient...
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