This is Fos-Jun dimer (1FOS). Is the leucine zipper at the C-terminus or at the N-terminus of the helices? Are the helices parallel or antiparallel?

Q: How will you determine the Right-Handed and Left-Handed Helices?

A: Helix is a shape that looks like a twisted, spiral shape such as a spiral staircase or a corkscrew.…

Q: what would the net charge on the tetra peptide of sequence ala-lys-glu-ser at ph 7.2 what would it…

A: Peptides are composed of amino acids that are bonded to each other via peptide bonds. The ionizable…

Q: Isoleucine is encoded by three codons (5')AUU, (5')AUC, and (5')AUA. These three codons are…

A: Wobble hypothesis: This hypothesis was given by Francis Crick. According to this hypothesis the…

Q: 1.) What do the first four letters represent in the polypeptide sequence of SARS-CoV-2 surface…

A: Since you have posted multiple questions, we will answer the first one for you. If you want a…

Q: Since among the 64 codons of mRNA 61 codify amino acids that form polypeptide chains what are the…

A: The function of the other codons is stop codon i-e to stop the translation.

Q: Disulfide bonds have been shown to stabilize proteins (i.e., make them less likely to unfold).…

A: Disulfide bonds are considered the covalent bond, which is formed between the two cysteine residues.…

Q: What would you predict about the ratio of hydrophilic to hydro- phobic amino acid residues in a…

A: Before getting into the calculations, we have to assume that our globular protein have a spherical…

Q: Assume that the translational error frequency, d, is 1 * 10–4. (a) Calculate the probability of…

A: The probability that a protein molecule is completely error free is (1-δ)n, where n is the number of…

Q: Why would the mutation Ile -> Asp be likely to destabilize a protein? Why would the mutation Ile…

A: Mutations in proteins' amino acid sequences can have an impact on their stability. Long sequences of…

Q: What are the sequences of all the possibletripeptides that contain the amino acids aspartic acid,…

A: Amino acids are the building blocks of proteins. They contain amino group, carboxyl group, and…

Q: Give two reasons to explain why a proline residue in the middle of an a helix is predicted to be…

A: Proline either breaks or kinks a helix.

Q: This problem concerns a "typical" tyrosine residue found on the surface of a globular protein. a) If…

A: Tyrosine (Tyr or Y) is an aromatic amino acid that can be naturally produced by the body using…

Q: Which amino acid would be attached to a tRNA that read "GGU"? Val (M) Ala (A) Ser (S) 3'- Arg (R) A…

A: Amino acids are the structural unit of proteins, that is made up of carbon, hydrogen, Oxygen and…

Q: For the structure shown on the figure - qualitatively draw Ramachandran plot. Assume a mixture of…

A: Ramachandran plot is plot used to visualize energetically allowed regions for the peptide backbone…

Q: The following are sequences from three different alpha helices found in human proteins:…

A: The proteins are constituted of twenty naturally occurring amino acids connected via peptide…

Q: What are isoaccepting tRNAs?

A: Transfer ribonucleic acid (tRNA) is required during the translation process for the synthesis of…

Q: The following RNA: 5 AUGAUAACACUCGUACCUUAAUGUS' in the 5'-3'frame will betranslated into a peptide…

A: The single-stranded ribonucleic acid (RNA) molecule that corresponds to the genetic sequence of a…

Q: The SARS-CoV-2 spike protein is heavily glycosylated. What are some of the monosaccharides found in…

A: The spike (S) protein of SARS-CoV-2 mediates the virus binding to the human cells via its…

Q: According to wobble rules, what codons should be recognized by the follow- ing anticodons? What…

A: Wobble pairing was defined as the base-pairing with two nucleotides that do not follow Watson-Crick…

Q: Why does a folded mutant protein aggregate rather than remain a misfolded monomer?

A: Proteins are essential molecules in biological systems, and their proper folding is crucial for…

Q: The free energy of binding of codon on mRNA and anticodon on tRNA is -9 kT. What is the probability…

A: In thermodynamics, free energy is the function of internal energy, entropy, and enthalpy. The…

Q: A lysine is burined inside a protein surrounded by hydrophobic resiudes, how does this affect the…

A: Answer :- The behavior of amino acid residues within a protein is profoundly influenced by their…

Q: What are the FOUR(4) distinct steps of translation elongation cycle for a growing polypeptide chain?

A: The translation is the process of protein synthesis from the genetic codon present in the mRNA. This…

Q: Assume that the translational error frequency, δ, is 1 x 10–4.(a) Calculate the probability of…

A: mRNAs are used to form protein by translation. The translation is performed using ribosomes, t-RNA…

Q: You have discovered a novel protein that has a pl = 5.5. To study the functional properties of this…

A: pI of protein is directly proportional to the pKa of amino acids.

Q: Erk and P-Erk live in two different locations within the cell even though they are just two…

A: * Mitogen activated protein kinase also called as  MAPK and  p42MAPK, and ERK2 * It is an enzyme…

Q: What is a helix-turn-helix motif?   secondary structure in which an α helix is separated from a β…

A: Introduction Motifs are the super secondary structure formed by the combinations of secondary…

Q: How many amino acids long is a zinc finger domain? What four conserved residues are contained in the…

A: Zinc finger are structural protein motif that has Zn ion in a coordinated bond to form a stable…

Q: PfCRT is found to have 10 peaks on a hydropathy plot given its primary sequence. Researchers also…

A: Proteins are linear polymers of amino acids attached to peptide bonds. Now the primary structure…

Q: What amino acid would a tRNA with anticodon CUA carry? Enter the 3 letter code only [A]. [e.g. Met…

A: tRNA stands for the transfer RNA and it has L- shaped structure . Transfer RNA acts as an adopter…

Q: While helix-turn-helix (HTH) is known to be involved in both eukaryotic and prokaryotic…

A: helix-turn-helix (HTH) is a DNA-binding motif found in a variety of proteins, including…

Q: Assume a fragment of two-stranded antiparallel β-structure is 3.3 nm long. What is the approximate…

A: Deoxyribonucleic acid also known as DNA, is a molecule that houses the genetic instructions required…

Q: What is an anticodon and where is it located on the tRNA structure?

A: The anticodon is a distinctive three-nucleotide sequence present on transfer RNA (t RNA) molecules.…

Q: Assume that the translational error frequency, 8, is 1 × 10-4. (a) Calculate the probability of…

A: The translation is the process of making a polypeptide chain from mRNA. The translation is catalyzed…

Q: According to wobble rules, what codons should be recognized by the following anticodons? What amino…

A: The tRNA is the transfer RNA that matches the mRNA codon with the set of three nucleotides,…

Q: Disulfide bonds have been shown to stabilize proteins (i.e., make them less likely to unfold).…

A: Protein folding is driven by chemical and physical constraints. As a polypeptide chain folds into a…

Q: In a 0.1 M lysine solution, what are the individual concentrations of the protonated C-terminus…

A: In a 0.1 M solution of lysine, the protonated form of the amino acid has a concentration equal to…