Sephadex G-75 has an exclusion limit of 80,000 molecular weight for globular proteins. If you tried to use this column material to separate alcohol dehydrogenase (MW 150,000) from β-amylase (MW 200,000), what would happen?

Q: Given pKa values for ionizable groups from Table 27.2, sketch curves for the titration of Q.)…

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Q: A novel new method of peptide synthesis involves formation of an amide bond by reaction of an a-keto…

A: In this question, we want to draw curved arrows on the reactant Molecule. You can see details…

Q: Click or Tap on the second prominent form of arginine at pH 6.0 in the picture below?

A: The correct form is as follows:

Q: The pK value for N1 of adenine is 3.64, whereas the pK value for N1 of guanine is 9.50. Explain this…

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Q: Calculate an approximate pI for Peptide E-G-E-A

A: The chemical structure for peptide is shown below.

Q: OH Dess-Martin's periodinane (DME thylamine) CH2CI2

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Q: Determine the pl for this synthesized pentapeptide: A-B-C-D-E Given that the pK values for the amino…

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Q: A graph showing the difference between wavelength and absorptions 1,6 1,4 1,2 0,8 - Arginine 0,6 -…

A: When there is a wavelength where the absorption is strongest an absorption spectrum is at maximum…

Q: construct the following lipids: 1. Alpha-arachido-beta-clupadonolignocerate 2.…

A: Lipid is a macro biomolecule that is soluble in non-polar solvents. Fatty acids are the acidic…

Q: Brucine is a poisonous alkaloid obtained from Strychnos nux vomica, a tree that grows in India, Sri…

A: Figure 1

Q: Determine the pl for this synthesized pentapeptide: A-8-C-D-E Given that the pk values for the amino…

A: A biomolecule having both acidic COOH group and basic NH2  group is knownas amino acid  We are…

Q: What is the charge of each amino acid residue in the peptide chain and what is the net charge on the…

A: The peptide KGL contains the following amino acids lysine glycine leucine

Q: 4. Circle all of the peptide bonds in the molecule below. Write the name of the molecule using the…

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Q: In the experiments of Barrick et al. (as shown), it was observed thatreplacement of histidine by a…

A: Hemoglobins have two alpha chains and two beta chains. When oxygen binds hemoglobin, there is a…

Q: What is the correct pairing of peptides shown with the - combination indicated on the Ramachandran…

A: The Ramachandran plot shows the statistical distribution of the combinations of the backbone…

Q: 3. If D-serine has a specific activity of +6.83, what will be the specific activity if it is…

A: The specific activity of enantiomers are equal in magnitude but they have opposite signs because…

Q: Calculate isoelectric point (PI) of the peptide GSTSRASPRM. pKa N-terminus = 9.3; pKa R = 12.5; pKa…

A: The peptide is GSTSRASPRM.

Q: Question attached

A: Entropy is an important thermodynamic parameter which describes the randomness of a system .…

Q: 1H 19F has a force constant of 966 N m-1. Calculate the frequency of light corresponding to the…

A: In infrared spectroscopy, the infrared radiation interacts with the molecule to give the spectra.…

Q: Question attached

A: Standard entropy is the entropy content of one mole of pure substance under a standard state.The…

Q: Complete the Ka1 expression for H2CO3 in an aqueous solution.

A: H2CO3 is known as carbonic acid and is a diprotic acid, i.e. it releases two H+ions, the Ka1…

Q: (a) Figure 23-2 shows that the degradation of d-glucose gives d-arabinose, an aldopentose.Arabinose…

A: The two dimensional representation of arabinose using Fischer projection is represented as shown…

Q: Which of the following combination in each pair is likely to produce more Maillard browning when…

A: Given  Sucrose + glycine, pH 7.0 vs. glucose + glycine, pH 7.0 Maltose with a dextrose equivalency…

Q: Question attached

A: Entropy increases as the number of molecules increases. Therefore, a) In breaking of amino acid…

Q: In humans, the final product of purine degradation from DNA is uric acid, pKa = 5.61, which is…

A: There are two types of bases/acids. One is strong base/acid which is completely dissociable in into…

Q: According to this Ramachandran plot, what is the main secondary structure element found in this…

A: The correct option is:

Q: -NH2 Na CN HCL, H,0 CN COCH 2-amino - 3-phenyl propanitrik phenylalanine COOH 02 H20 Iodinase COOH…

A:

Q: Which of the following combination in each pair is likely to produce more Maillard browning when…

A: Maillard reaction is basically a nucleophilic attack of the amino group of an amino acid onto any…

Q: Question attached

A: In chemical thermodynamics, entropy is the measure to calculate the randomness of the thermodynamic…

Q: 5. A histidine residue (His146) in Hb subunit has a side chain pKa of 6.2 in the lung. Due to a…

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Q: Using MALDI-TOF mass spectrometry which of the following proteins would hit the detector first? O…

A: Myoglobin is the answer.  As it is has lowest mass as compare to others.

Q: Determine the pl for this synthesized pentapeptide: A-B-C-D-E Given that the pK values for the amino…

A: Amino acid are biomolecules which have both acidic and and basic group  We are required to find the…

Q: could you rxplain the answer to #2? A) XX YY B) SS -- XX c) YY TT D) zz Ss 22 XX 2. Which of the…

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Q: 4

A: DNA strands are negatively charged so, they are attracted by the positive electrode. In gel…

Q: Draw d-idose, the C3 epimer of d-talose. Now compare your answers with Figure 23-3.

A: The d-idose, the C3 epimer of d-talose has to be drawn.

Q: What is a cost and benefit to denaturing proteins (ie, a pro and a con)?

A: Protein denaturation is a process due to which a protein loses its native shape due to distortion of…

Q: Write out a scheme for the resolution of the two enantiomers of the antiplatelet drug clopidogrel…

A: The stereogenic center of clopidogrel and 10-camphorsulfonic acid are shown in figure 1.

Q: Consider the dipeptide (Pep) of a histidine and a lysine residue, with the neutral form pictured.…

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Q: (SYN) Show how to synthesize (a) Ser-Phe and (b) Leu-Ala-Met, using the scheme similar to the one in…

A: (a) Ser-Phe:

Q: 6. Draw the beta-Haworth projection for the following carbohydrate. HO HO HO FO HO HO H HO H HO HO…

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Q: Which has a higher percentage of negative charge at physiological pH (7.4), leucine with pI = 5.98…

A: When an amino acid is placed in a solution which has a pH that is lower than the pI then the amino…

Q: An unknown amino acid labeled KEMISTRI has an IpH value equal to 5.41. If its pKa1 is equal to…

A:

Q: 6829Cu->0-1beta+?

A:

Q: The term used to separate a mixture of enantiomers of amino acids using chiral reagents? A)…

A: When enantiomer of mixture are separated using chiral reagent is called isomeric resolution . In…

Q: Explain why, when the guanidino group of arginine is protonated, the double-bonded nitrogen is the…

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Q: Draw the molecule arginyl-alanyl-histidyl-cysteinyl-isoleucyl-asparagine at pH 7. List the name of…

A: As per the policy, we are only allowed to answer only first question. For the answers of other…

Q: 1.Serine protease is one of the most studied mechanisms in biochemistry. A. Using the diagram…

A: The main player in the catalytic mechanism in the serine proteases is the catalytic triad. The triad…

Q: If inhibitor X changes maltase activity to a Vo of 0.10 mM per minute when [S] = 0.125 mM, and a Vo…

A: Using Michael Menton in both cases,

Q: Given the fact that phenylalanine has a pK₂1-1.83 and pK a2-9.13, show the condensed structure of…

A: given pka1= 1.83 pka2= 9.13 valine