The tetrapeptide structure shown below contains one amino acid that occurs twice. Which is it and in what positions? A) proline, 1st & 4th C) phenylalanine, 1s' & 4th B) cysteine, 2nd & 5th D) glycine, 2nd & 5th E) tyrosine, 1st & 4th но. NH2 HN. HN ÓH

Q: Lysine and tryptophan are two amino acids that contain an additional Natom in the R group bonded to…

A: The structure of the lysine and the tryptophan are shown below: Lysine The structure of the lysine…

Q: Classify these amino acids as acidic, basic, neutral polar, or neutral nonpolar. Drag each item to…

A: These all are amino acids which is classified in different way according to human body or according…

Q: Part a) Draw the peptide K-E-S. Part b) How can you estimate the pI of the peptide?

A: We have to predict the structure of peptide as well as the pI.

Q: nearest 0.1 charge unit) the net charge on each amino acid when tho

A: Amino acids are molecules that combine to form proteins. There is COOH and NH2 group in amino acid.

Q: 59.) The tetrapeptide structure shown below contains one amino acid that occurs twice. Which is it…

A: A short chain of amino acids is called peptide. The amino acids present in a peptide are connected…

Q: a) Canavanine is an amino acid that is produced by some legume plants. It is not used in proteins…

A: Canavanine has a similar structure of Arginine.  Hence Canavanine has 3 groups that can be…

Q: What bonding/interaction(s) is possible between octane derivatives and peptides? O Cation-to-Anion O…

A:

Q: For each structure on the left, pick an identification on the right. Clear All но- amino acid H2N-…

A: A peptide bond is formed between two molecules when the carboxyl group of one molecule react with…

Q: Which of the following is the backbone for a protein? O H Il T -C-N-CH-C-N- O H H -C-CH-N-CH-C-CH-N-…

A: We are having four different diagram from which we have to decide which one is the backbone of…

Q: Tyrosine, Tyr, Y coot 1 8P + PO - соо H₂N-C-HH3N"-"C-H = H₂N-C-H CH₂ 1 CH₂ PH-Pha= 2.20 OH (+1) CONS…

A: The isoelectric point of an amino acid is the pH at which the amino acid has a neural charge...

Q: Consider this amino acid shown here at pH 7.0 (the isoelectric point for this amino acid is 9.7).…

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Q: The amino acid histidine has ionizable groups with pKa values of 1.8, 6.0, and 9.2, COOH H₂N-CH CH…

A: GIVEN The pKa1, pKa2 and pKa3 values of Histidine are given as 1.8, 6.0 and 9.2. Initial pH of…

Q: In the box below draw the tetrahedral representation of the R enantiomer of the amino acid valine,…

A: Given  Amino acid = Alanine  Tetrahedral representation of R enantiomer of alanine = ?

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: 3. In the space provided, draw the structure of Glycine (Gly) at the following pH value. Glycine has…

A: Answer:- This question is answered by using the simple concept of writing the structure of an amino…

Q: Which side chain would most likely be found in the interior of a protein, away from the aqueous…

A: Hydrophobic amino acids have little or no polarity in their side chains. The lack of polarity means…

Q: Question 1 [CLO-2] If an Aspartate amino acid is in close proximity to Glutamate, the pKa will O a.…

A:

Q: Trp b. Phe c. Tyr d. Pro

A: Trp is a symbol for Tryptophan amino acid. Phe is a symbol for  Phenylalanine amino acid. Tyr is a…

Q: VII. Write the following Amino acid as, a. polar/non-polar%; b. Neutral/acidic/basic c. Also write…

A: The given amino acid is proline. The proline amino acid contains a carboxylic acid and a secondary…

Q: 4. A sample of processed meat scrap weighing 4.000 g is digested with concentrated H:SO, and…

A:

Q: Lysine and tryptophan are two amino acids that contain an additional N atom in the R group bonded to…

A: Lysine- Structure is- Lysine consists of α-amino group ,α- carboxylic acid group also side chain…

Q: Which of the following amino acids is expected to be the LEAST soluble in water and why? CH3 H3N CO2…

A: First question : LEAST soluble in water :  All three are amino acids having different side chain…

Q: t 目 Question 6 HO H₂N-C-C-OH CH₂ C=0 OH Aspartic acid (Asp) Quiz: Lab 7-Separation of Amino Acids…

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Q: Lysine and tryptophan are two amino acids that contain an additional N atom in the R group bonded to…

A: A substance is said to be basic, if it has the ability to donate lone pairs.

Q: The above amino acid, shown at pH = 7.0 and where every atom (including %3D hydrogens!) is visible,…

A: Amino acids are molecules that combine to form proteins. Amino acids and proteins are the building…

Q: Which structure below contains a peptide bond? H2N FHÇ- H N- CH3 O CH3 H2NFCH- С— ОН CH3 H2N-CH2-C-…

A: A peptide bond is formed from the reaction of a carboxylic group with an amine group through the…

Q: The maximum number of amino acid side chains that can potentially form an ionic bond (+lI-…

A: The structure of side group is shown below: It has two Nitrogen atoms in the ring capable of…

Q: Specify the absolute (R/S) configuration of the amino group in structure IV. (i) If the…

A:

Q: WDANIKQRLSTEYKQ (a) How many full turns are in this a-helix? (b) What is the length of the helix (in…

A: An α-helix, also known as a-helix, is the secondary structure of protein. In an α-helix, the N-H…

Q: Of the following side chains (amino acid R groups), which four are hydrophilic? A CHSH c. CHC OH E.…

A: Hello. Since more than one question has been asked, the first question shall only be answered in…

Q: protein has a number of aspartyl and gluatmyl residues, what would be the expected pI for this…

A: Answer  The protein has number of aspartyl and glutamic…

Q: . Polyglycine, a simple polypeptide, can form a helix with 6 = -80°, ự = +150°. From the…

A: In Ramchandran Plot (φ) represent Phi (ψ) represent psi - Dihydral angle  - dihydral angle is the…

Q: dentity the predominate attractive force responsible for the proteins tertiary structure at the…

A:

Q: 3. study the Lewis structure of a geheric amino acial shann below ldentify the part af generic amino…

A: Lewis structure for any molecule is drawn by using the following steps, First the skeletal structure…

Q: The force constant katr of a backbone Ca – -C bond in a peptide is 250.0 kcal/mol/Angstrom² and the…

A: Given: Force constant (kstr) of bond = 250 Kcal/mol/Angstrom2  Equilibrium bond distance (r0) = 1.49…

Q: A sample of processed meat scrap weighing 4.000 g is digested with concentrated H.SO. and…

A:

Q: 4. The structural fomula for several amino acids are shown below. H. N-C-C H. N-C-C H. он он ČH, H H…

A: Here we have to draw structural diagram of disulphide linkage formed in the following penta peptide…

Q: Glycine is a diprotic acid, which can potentially undergo two dissociation reactions, one for the…

A:

Q: 6. Is this amino acid L- or D-, and how can you tell? Н -ŅH3 CH3 a. D-, because all amino acids are…

A: option (b) is correct. because amine group is present in right hand side.

Q: During the hydrolysis of proteins, some amino acids, such as tryptophan, do not survive the reaction…

A: The common group which is present in asparagine and glutamine is an amide group. When these two…

Q: 4. Would an amino acid with the given R group be most likely to be found in the hydrophobic or…

A: Amino acids with hydrophilic side chain lie in the hydrophilic region of the protein and those with…

Q: Look at the amino acids shown below. Their side chains are highlighted. Which amino acids have polar…

A: Inside the amino acids, the basic structure contains a carboxylic acid group and an amino group. The…

Q: Select one: но HN" O a. HN ob. Oc. HN d.

A: structure b has a hydrophobic end the carbon chain is the hydrophobic end as OH, NH3+ COOH are all…

Q: Q3- We wish to synthesize all possible dipeptides containing the amino acids tyrosine, lysine,…

A: Peptide bonds:  They are formed from COOH and NH2 through condensation and removal of water.

Q: The amino acid histidine has ionizable groups with pKą values of 1.8, 6.0, and 9.2, as shown. COO…

A: In the given question we have, The pKa values are given which are= 1.8, 6.0 and 9.2 The…

Q: 4. Another peptide fragment that is 33 residues long is recognized as the most resistant to being…

A: In the given sequence of peptide, L, Q, P, F, and Y are five different amino acids.