Justify with structure why arginine (pI=) is a more basic amino acid than histidine (pI=) is.
Justify with structure why arginine (pI=) is a more basic amino acid than histidine (pI=) is.
Calculate the pI of a peptide containing Serine, Threonine, Arginine, Glutamic acid, Cysteine and Histidine? Peptide written out is: STRETCH
Which amino acid does not have a cyclic R-group? Phenylalanine Tyrosine Arginine Histidine
2. (10 points) The structure for the amino acid histidine is shown below (at pH 1). Write the chemical equations for the ionic dissociations of histidine (as the pH increases) Determine the isoelectric point for histidine and indicate the structure present at the isoelectric point. The pka values for histidine are 1.82 (-CO2H). 9.17 (NH3'), and 6.00 (R group). OOH "HaN NH "INP
Choose one of your favorite amino acid (except Arginine and Tyrosine), Using the charge information (1) Write your chosen amino acid structures for sequential deprotonation and place p?? values over the equilibrium arrows (2) Calculate net charge of your chosen amino acid structures above (3) Determine pH range of amino acid based on given structure and charge (4) Calculate pI of your chosen amino acid
What is the structure of valine-methionine-histidine-arginine-alanine at ph 2?
could you explain this answer? он н OH 29.33 Histidine is classified as a basic amino acid because one of the N atoms in its five-membered ring is readily protonated by acid Which N atom In hiotidino is protonatod and why?
Draw the complete structure of the tripeptides, at low ph, that have arginine as the amino terminal acid
ginine is a glucogenic amino acid. Catabolism of arginine yields alpha-ketoglutarate, a citric acid cycle intermediate and glucogenic precursor. The enzymes and steps of the catabolism of arginine are shown below. Place the correct structure in each target, starting with arginine.
TABLE 5.1 PK values for amino acids 2.36 Amino acid Alanine Arginine Asparagine Aspartic acid Cysteine Glutamic acid Glutamine Glycine Histidine Isoleucine Leucine Lysine Methionine Phenylalanine Proline Serine Threonine Tryptophan Tyrosine Valine PK, PK₂ 2.34 9.69 2.17 9.04 2.02 8.80 1.88 9.60 1.96 10.28 2.19 9.67 2.17 9.13 2.34 9.60 1.82 9.17 9.60 9.60 2.18 8.95 2.28 1.83 9.13 1.99 10.60 2.219.15 2.09 9.10 2.83 9.39 2.20 9.11 2.32 9.62 2.36 9.21 5.56. Of the amino acids listed in Table...
describe the basic structure of an amino acid. what classes of amino acids are there?