The pK value for N1 of adenine is 3.64, whereas the pK value for N1 of guanine is 9.50. Explain this diff erence.

Q: What is the charge of the Peptide DMQK at pH=7   ? A) -2 B) 0 C) -1 D) +2

A: The peptide DMQK consists of aspartate (D), methionine (M), glutamine (Q) and lysine (K)

Q: A protein has a molecular weight of about 12,000u. This protein contains 6.4% (w/w) of sulfur in the…

A: Given : Molar mass of protein = 12000 u Mass percent i.e % (w/w) of sulfur = 6.4 % And all the…

Q: Molecular pI Total # of Total # of Weight Тyrosine Residues Tryptophan Residues Ovalbumin 42881.24…

A: The molar absorption coefficient can be given as follows: ε=Tryptophan number×5500+Tyrosine…

Q: Odd-One-Out. Find which of the following is not included in the group. 36. a. Tryptophan b.…

A: Given groups, 36. a. Tryptophan b. Tyrosine c. Phenylalanine d. Histidine37. a. Arginine b.…

Q: Glycine has pKa values of 2.34 and 9.60. At what pH does glycine exist in the indicated form?

A: Glycine has pKa values of 2.34 and 9.60. At what pH does glycine exist in the indicated form Given…

Q: Draw the structure of a four-residue segment of DNA with the following sequence.(3′end) G@T@A@C (5′…

A: The structure of a four-residue segment of DNA for the given sequence is shown below.

Q: Use the table below to answer the following question: Aspartic Acid pk, values at Physiological pH…

A: In this question, we want to determine the formal charges for each groups at pH = 1.60  You can see…

Q: At what pH does a 0.02 M solution of Ala-Cys exhibit a net charge of -1.5? The pK, for the…

A: Isoelectric point is the pH at which the amino acid carries no net charge i.e. it is electrically…

Q: The basic principle that underlies northern and Southern blots is                                .…

A: We will choose correct option

Q: 3. A homopolymer of histidine (polyhistidine) adopts an alpha helix structure at pH 9 but is…

A: Proteins undergoes denaturation and unfolds due to variation in pH or in higher acidic or basic pH…

Q: 1. Type of bond a. H-bond b. Electrostatic interaction c. Hydrophobic bond  d. Disulfide bond…

A: Proteins are the biomolecules that contains alpha-amino acids. The amino acids have -NH2 as well as…

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: 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: Exhibit 6 for Question 28 Thymine Adenine H. CH3 O......H-N N H N H- N-H......N Deoxyribose H…

A: e. Preserving the sequence of genes during DNA replication

Q: Given the following peptide RISAGDLEVK,  Determine the formal charge of peptide  a. pH=0.5 b.…

A:

Q: In Hb S, a residue is replaced by a residue. histidine lysine valine

A: given, in Hb S, a ___ residue is replaced by a __ residue.

Q: Draw the form of aspartate that predominates at the following pH values: pH = 11.0

A: Aspartic acid is an amino acid having the formula,  COOH-CH2-CH(NH2)-COOH Amino acids shows charge…

Q: ICQ 23: Amino acids that is secondary among these is A. Ala B. Pro C. Gln D. Try

A: Welcome to bartleby !

Q: If the pl for asparagine is 5.43, draw the structure at a pH of 9.5?

A: The pl for asparagine = 5.43 pH = 9.5

Q: 5-Bromouracil (BU) resembles thymine sufficiently that BU base-pairs readily with adenine in a DNA…

A: 5 bromo uracil is an analog of thymine. It resembles thymine in structure and can be incorporated in…

Q: N' HN Where on this amino acid does it attach to a primary sequence of a protein and where is the…

A:

Q: Given knowledge of the mobile phase which lipid was more polar DGDG SGDG MGDG

A: In High performance liquid chromatography (HPLC) is an analytical technique which is used to…

Q: Q5/ Explain what is the meaning of D, L, alpha & beta ß terms in mannose with the structure of each…

A:

Q: 21. The TCR that can bind to peptide on correct MHC molecules is made up of chains a. a and B b. y…

A: TCR or T-cell receptor is a protein complex found on the surface of T-lymphocytes which are…

Q: Glycine has pKa values of 2.34 and 9.60. At what pH does glycine exist in the indicated form?

A: The given structures is a 50:50 mixture.

Q: HO. H H OH What type of nitrogen-containing base is present in the nucleoside shown here? H H H NH₂…

A: There are two types of nitrogen bases present in nucleic acids, that is purines and pyrimidines,…

Q: Draw the form of aspartate that predominates at the following pH values: pH = 1.0

A: The form of aspartate that predominates at the pH = 1.0 has to be drawn below,

Q: Taking the structure of the amino acids into account, give a comparative discussion of these pK…

A: Amino acids are the biomolecules in which central carbon atom is attached to a carboxylate group,…

Q: A mutational change alters a polypeptide by substitutingthree adjacent prolines for three glycines.…

A:

Q: mino acid pKal pKa2 pKa3 Glycine 2.34 9.60 Aspartic acid 1.88 9.60 3.65 Glutamic acid 2.19 9.67 4.25…

A: The question is based on the concept of amino acids. we have to draw the structure of  tripeptide…

Q: LOH `NH NH, Absolute stereochemistry. N=236.27 g/mol 50 mmol of each amino acid residue was used in…

A:

Q: но но I I HT H,N-C-ċ-N-ċ-ċ-OH CH3 CH2 `NH HN=

A: Equivalence point is the point where acid and base reacts completely to give salt and water.

Q: 1. The protein illustrated below was isolated from a superhuman being. Scientists theorized that it…

A: A protein is a complex polymer made of a number of amino acids, which are monomer units. The amino…

Q: a. histidine b. serine c. aspartate d. valine

A: 1. The oxidation state +2 for iron ion of heme group can be bind to four nitrogen with in a plane.…

Q: The DNA of bacteriophage lambda has 1.2 x 10^5 nucleotides. How many proteins of molecular weight…

A: Solution - DNA  - Deoxyribonucleic acid is a molecule composed of two polynucleotide chains that…

Q: Decide if the side chains of the following peptides are nonpolar or polar, and label the hydrophobic…

A: Non-polar amino acids are hydrophobic in nature and polar amino acids are hydrophilic in nature. (a)…

Q: Z= Z— H N Η NH₂ N -Z N

A:

Q: Taking the structure of the amino acids into account, give a comparative discussion pK values where…

A:

Q: Draw the Haworth structure of a ribose nucleoside with a pseudouridine base.

A: Nucleoside is a combination of Base + sugar Here base is uridine  Sugar is Ribose  Linkage between…

Q: Draw the form of aspartate that predominates at the following pH values: pH = 6.0

A: Amino acids are the building blocks of proteins. There are 20 naturally occurring amino acids.…

Q: When 0.056g of protein was heated with concentrated sulfuric acid, the protein v completely…

A: Protein undergoes decomposition on reaction with concentrated sulfuric acid ( H2SO4 ).

Q: Which of the following amino acids has a net negative charge at pH 7.0? A. glycine B. threonine C.…

A: We need to select the amino acid that has a net negative charge at pH 7

Q: What is the pI for the polypeptide ALRHEN? Use pKa of 8 for the N-terminus and 4 for the C-terminus

A:

Q: Pka for terazosin ? With illustration

A: INTRODUCTION: structure of Terazosin is shown below:

Q: Are the other polytypes 1H and 3R of PtX2 have been investigated?

A:

Q: write down the predominant species of isoleucine (I) at four different pH values: 2.1, 5.1, 7.3, and…

A: The predominant species of isoleucine at different PH is given below

Q: Define the following terms: a. purine b. pyrimidine c. nucleoside d. lactam e. lactim

A: The DNA present in the living being is made of a basic chemical building block known as Nucleic…