Which one of these characteristics is not true for the alpha helix? Proline is typically not found in the helix. A hydrogen bond forms between the carbonyl oxygen of the nth amino acid residue and the - NH group of the (n + 4)th amino acid residue. It is right-handed. There are 3.6 amino acids per turn. There is a requirement for glycine every third amino acid residue.

Q: DNA in the form of a double helix must be associated with cations, usually Mg²+ . Why is this…

A: DNA is made up of two strands wind around one another to form double helix. The two strands are…

Q: Many of the loops on proteins are composed of hydrophilic amino acids. Why might this be the case?

A: Protein is one of the important biomolecules. This protein is made up of sequence amino acids which…

Q: What is wrong about calculating charge of a polypeptide based on the pKa of individual amino acids?…

A: The polypeptide chain is produced by the joining of amino acids together with the help of peptide…

Q: How many alpha helices comprise this structure (2JHO-myoglobin)? Number the helices with helix 1 at…

A: The α-helix is a polypeptide backbone & a structural unit that can be distinguished to shifting…

Q: How is the peptide shown named (give each 3-letter name for the amino acids present)? Whichamino…

A: The peptide is made up of amino acid. The sequence of amino acid in this peptide is N - Val-Phe-Trp-…

Q: Alanine has a strong tendency to form α-helix. A biochemist synthesized a polypeptide consisting of…

A:

Q: What is full name of the N-terminal amino acid residue? Just type the name (one word). What is the…

A: Amino acids are compounds containing carbon, hydrogen, oxygen and nitrogen. They are monomers or…

Q: Which amino acid residue is preferred at which position in the following peptide for cleavage by…

A: While writing a polypeptide, the left side is the N terminus and the right side is the C terminus.

Q: Proline is sometimes found as one of the first four residues of an alpha helix. Proline is less…

A: Proline is one of the 20 standard amino acids which has an amino group (NH2), a carboxyl group…

Q: SYNZIPS are a-helices that can be used in synthetic biology to create coiled-coil interactions…

A: Secondary structure of protein describes the special arrangement of its main chain atoms, without…

Q: 5-Bromouridine is known to induce mutations in DNA. One of the characteristics of this compound is…

A: 5-Bromouridine is a uridine subordinate with a Bromo substituent at the fifth carbon. Br -Urd is…

Q: The amino acids leucine and threonine in general tolerate being in an alpha helix. However having…

A: α-Helix is formed by the hydrogen bonding between the backbone atoms of the polypeptide chain or…

Q: Bidentate interactions are those where two or more hydrogen bonds are made with a base or base pair.…

A: Introduction  A base pair is a fundamental building block of double-stranded nucleic acids made up…

Q: Identify the number of amino acids per 360o turn of an alpha helix. Given this information, how many…

A: Proteins are composed of higher folding of linear chain amino acids adjoined via peptide linkages.…

Q: A polyhistidine-tag or better known by its trademarked name His-tag is an amino acid motif present…

A: In vectors used to produce recombinant proteins, the DNA sequence defining a string of six to nine…

Q: The linkage between individual nucleotides in DNA is known as a phosphodiester bond because—…

A: DNA is made up of nucleotides. Each nucleotide contains a phosphate group, a sugar group, and a…

Q: How many amino acids are present on the helix to the right? Any partially drawn amino acids count as…

A: Basic properties of alpha helix 3.6 amino acid residues are present in 1 turn Rise per residue 1.5…

Q: Which of the following nucleotides found in DNA is dGTP? Note, hydrogens bound to carbon atoms are…

A: A nucleotide consists of a sugar molecule (be it RNA ribose or DNA deoxyribose) bound to a phosphate…

Q: Which one of these indicated groups or bonds: hydroxyl; phosphate; triphosphate; nitrogen base;…

A: DNA carries genetic information. DNA is a double-stranded molecule. The strands of DNA double-helix…

Q: Which statement is true regarding an a helix,

A: There are two most common types of secondary protein structures: a. alpha helix…

Q: An π helix can be described as a 4.4 helix. Explain 16 what this designation means. Given the pitch…

A: ●A π helix is a type of secondary structure found in proteins.The amino acids in a standard π-helix…

Q: Why do we not indicate the side chains of the amino acids that form the peptide bond (see Figure…

A: Peptide bond forms when two amino acids react with each other through their alpha-amino and…

Q: A single-stranded RNA fragment contains 24% cytosine residues. What is the percentage of uracil…

A: Amino acids are organic molecules that involve in a condensation reaction to form long protein…

Q: as asked to draw the structure of the amino acids serine (R group is -CH₂OH) and glycine (R group is…

A: A protein is formed when various amino acids are linked together by a peptide bond. Various amino…

Q: You identify a section of 2 beta strands in a protein crystal structure. When you identify the…

A: The linear arrangement of amino acids in beta strands, an usual secondary structure in proteins,…

Q: Which amino acids would you expect to find marked on the alpha helix? Alanine Isoleucine Leucine…

A: A prevalent motif in the secondary structure of proteins, the alpha helix (-helix) is a right-hand…

Q: Draw the structure of an α-helix (polypeptide backbone only, no side chains) as accurately as…

A: α-helix is the secondary structure of the proteins in which H-bonding play the predominant role.…

Q: There is only one possible sequence of amino acids when deduced form a given nucleotides. But…

A: Nucleotide refer to a biomolecule composed of phosphate, pentose sugar and nitrogenous base. These…

Q: Where would you expect a polypeptide region Ridge and the amino acid valine, leucine, and isoleucine…

A: Amino acids are the building blocks of life. Proteins are long chains of amino acids that make up…

Q: why do you think this is? In your explanation, you should describe the specific molecular…

A: 1. Proline is rarely found in beta sheets or alpha helices this is because proline is totally…

Q: If the polypeptide chain GHREAQNF were in an alpha helix, then the alpha am group of amino acid N…

A: The alpha helix of a protein structure is a type of regular secondary structure where successive…

Q: Consider an alpha-helix comprised of twelve amino acid residues. How many hydrogen bonds should be…

A: Proteins are linear polymers of amino acids which form the basic unit. Amino acids consist of a…

Q: The primary amino acid sequence of a stretch of polypeptide is Asp-Glu-Pro-Lys-His-Arg. Would you…

A: Amino acids are biomolecules when combined with a peptide bond forms proteins. Proteins are…

Q: What kind of repeating polynucleotide would yield a single polypeptide with a tetrapeptide repeating…

A: Polynucleotide is a sequence of nucleotides. Nucleotides consist of a sugar molecule, a phosphate…

Q: What is the sequence of amino acids coded by the following sequence of nucleotides on a strand of…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: G Which of the following amino acids is most unlikely to be present in a beta sheet? Lysine Valine…

A: Proteins show two types of secondary structural elements. They are1) Alpha helix and2) Beta sheets .…

Q: Which of the following base change will result in the alteration of the net charge of the amino acid…

A: Proteins are composed of amino acids, which are joined together through peptide bonds. Proteins are…

Q: Within a naturally-occurring polypeptide, under neutral pH conditions (pH = 7.0), which of the…

A: Proteins are also called polypeptides because the monomer that forms the proteins commonly called…

Q: In the following polypeptide, which amino acid would be participating in hydrogen bonding with…

A: Alpha helix is one of the most prominent secondary structures formed by polypeptide chains. The…

Q: Why would the nucleotide bases be represented as puzzle pieces, as in the illustration below? What…

A: The nucleotide bases in DNA are the basic units of hereditary code and their interaction is basic to…

Q: Place an asterisks (*) next to the 3' carbon atoms in the polynucleotide shown. -0 CH₂ H OH DH…

A: This is an example of a Polynucleotide present in DNA. A nucleotide consists of a deoxyribose…

Osmosis

In simple words, osmosis is the slow, gradual movement of a liquid through a membrane. But there are nuances to this process. For instance, there has to be an imbalance in the distribution of solute in the liquid on either side of the membrane, which has to be semipermeable. The liquid in the region with a lower solute concentration moves to the region with a higher concentration, thereby displacing the solution in the process. The objective is to equalize the concentration of molecules on both sides of the membrane; the displacement of liquid can be viewed as a byproduct of this equalization. Since there is no energy required to carry osmosis, it is considered a passive process.