What structural problems do cross-links "solve" in small domains like the zinc finger and disulfide-containing toxins?

Q: Based on what you know about the structure of GPCRs, they must have: a)One internal start transfer…

A: Proteins destined for secretion outside the cell or lumen of an organelle are first targeted to the…

Q: Why is R-banding significant when its banding pattern is just the reverse pattern of G-banding?

A: Banding technique: the given banding technique is of chromosome banding techniques i.e. G-banding,…

Q: As an example, consider albumin, a protein made of a single polypeptide weighing 66,000 daltons (66…

A: Gel electrophoresis if the technique of separation of molecules on the basis of their size and…

Q: 1) A ligand-binding protein showing negative homotropic cooperativity? a) should give an nH value…

A: Cooperativity or cooperative binding occurs when binding of one molecule influences the affinity of…

Q: In the deoxy state of HB, which of the following does not occur? a) An inter-chain salt bridge…

A: Because hydrogen bonds and salt bridges, or ion-pair bonds, stabilize the deoxygenated form of…

Q: So which form of the arginine side chain is the ionized form? And when the side chain is ionized the…

A: Arginine is an amino acid with a side chain that contains a guanidine group. In its conjugate acid…

Q: Saccharide X, a sugar composed of repeating cellobiose and maltose, is a constituent of two…

A: Glycoproteins are consisted of protein and glycan moiety which is involved in several biological…

Q: In the case of the bacterial two-Na+/one-leucine symporter, what is the key distinguishing feature…

A: Bacterial two-Na+/ one-leucine symporter consists of 12 membrane-spanning α helices. The leucine…

Q: Saccharide M, a sugar made of repeating units of maltose and cellobiose, is a component of…

A: Glycoproteins are consisted of protein and glycan moiety which is involved in several biological…

Q: (a) Draw the structure of the high-energy nucleoside triphosphate GTP. (b) Draw the structure of the…

A: In the biological system, there are several metabolic reactions that occur that result in the…

Q: Based on the UCP1 protein structure and the figure above, what are the likely chemical properties of…

A: UCP 1 protein: The UCP1 (uncoupling protein 1) protein is a mitochondrial protein found in brown…

Q: What following statement is TRUE concerning motifs and domains? a) Both motifs and domains are…

A: The proteins are folded into their three dimensional structure in order to gain biological function.…

Q: Members of the integrin family are the major cell surface receptors for many ECM proteins such as…

A: Integrins are a family of αβ heterodimers. Integrins are cellular adhesion receptor molecules that…

Q: 7.What is an allosteric effect? What is are homotropic and heterotropic allostery? Name one example…

A: Q. 8. ANSWER. (a) θ (Theta): This represents the fraction of protein molecules that bind to the…

Q: What type of motif/domain is present in the RPB2 subunit? What could be the function of this motif…

A: motif:Protein or nucleic acids are present in protein structure chain like biological molecules.A…

Q: What is basic polymerstructure of pectin? Why is pectin highly soluble? What are the 2 physical…

A: Carbohydrates are complex biomolecules that are mostly made up of carbon, hydrogen, and oxygen…

Q: What are the essential structural features of a leucine zipper coiled-coil? Can you address primary,…

A: Leucine is a necessary amino acid for the synthesis of protein. Leucine is a non-polar aliphatic…

Q: Below is a picture of a molecule called StemRegenin-1 (SR-1) interacting with a polypeptide at…

A: Proteins fold to form tertiary structures. The purpose of protein folding is to keep the hydrophobic…

Q: While each G-protein subunit has a distinctly characteristic C-terminal sequence that binds certain…

A: G-protein coupled receptors are heteromeric transmembrane proteins. GPCR is activated by specific…

Q: A certain membrane protein is found on the ER membrane with the N-terminus on the ER side of the…

A: This question is about the orientation of a particular membrane protein within the endoplasmic…

Q: 2- The odorant-binding protein (OBP) was described in rat and cow as a lipocalin that binds odorants…

A: Abstract NGAL (neutrophil gelatinase-associated lipocalin) also known as lcn2 or siderochalin is…

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: A heptapeptide that puncture the bacterial cell wall has just been recently isolated from the venom…

A: The given flowchart describes the various chemicals that the heptapeptide has been treated with and…

Q: The helix, Tyr-Arg-Glu-Leu-Val-Asp-Ala-Ile-Leu-Arg-Glu-Val-Phe-Thr-Lys-Arg-Gly, is present in the…

A: Voltage gated sodium channels are present in neuron membrane .They open when there is enough voltage…

Q: Cystic fibrosis (CF) is an inherited disorder caused by different types of mutations, many of which…

A: CF is caused by a mutation in a gene called the cystic fibrosis transmembrane conductance regulator…

Q: There was a study done (Isabel, et al.) on structural analysis of SARS-CoV-2 spike protein. The…

A: Hydrophobic groups are non-polar. These have a very low affinity with the polar groups. However,…

Q: determine the structure of p2 spike. is it primary, secondary, tertiary, or quaternary?

A: Approach to solving the question:Read and understand the question.Analyze the image.Research the…

Q: c) A lysine residue in the active site of UstD is involved in forming a covalent Schiff base linkage…

A: UstD is an enzyme that decarboxylates specific acidic amino acids and allows the transfer of the…

Q: . It has been postulated that the normal (noninfectious) form of prion differs from the infectious…

A: Prions are the misfolded proteins. They can alter the structure of other protein. In cells, they…

Q: You could use absorbance at 280nm or colorimetric assays like the Bradford assay or bicinchoninic…

A: There are different methods present to measure the concentration of a given protein.

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: Q3. a) What are the choice of the pyrimidine bases in DNA and RNA? Explain the choice and reason of…

A: Introduction: Pyrimidine is a carbon and hydrogen-based heterocyclic aromatic chemical molecule. One…

Q: What is the difference between an autonomous and a nonautonomoustransposable element? Is it possible…

A: Transposable elements (TEs) are the sequences of DNA (Deoxyribonucleic acid)  that can move from a…

Q: below). The red arrow indicates the amino acid lysin (K) that binds to the oxygen of the retinol…

A: The given diagram shows the primary structure of rhodopsin and tertiary structure of rhodopsin and…

Q: Why is the euchromatic region or light bands in G banding rich in Guanine and cytosine? And why is…

A: euchromatic region or light bands in G banding rich in G C while dark region rich in AT.

Q: 1. The shape of hemoglobin binding curves is: hyperbolic or sigmoidal 2. a) Based on the binding…

A: Note: As per the guidelines, i could solve only the first three subparts of the question. Please re…

Q: Questions 1) Determine the single letter code 40 amino acid sequence of the venom peptide by…

A: Chymotrypsin (endopeptidase) hydrolyzes peptide bonds on the C-terminus of a peptide bond of an…

Q: What interactions stabilize the formation of a ß-sheet from ß-strands? a) Salt bridges from charged…

A: A protein's function depends on its structure. There are four levels of protein structure: primary,…