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Draw and name two tripeptides with at least two polar amino acids. Make sure to give...
I need to draw and name two tripeptides that have two polar amino acids. Label the c and n terminus and have full & abbreviated name
1. What amino acids do the following abbreviations stand for? Draw the structure of each. a) lle b) Thr c) Gin 2. Name and draw the structures of the amino acids that fit these descriptions: a) Contains an isopropyl group b) Contains a secondary alcohol group 3. Which of the following objects is chiral? a) A pair of scissors b) A comb c) A drinking glass 4. What does the term achiral mean? Give two examples involving organic structures.. 5....
Choose three amino acids, no more than one of each of the following types: a. polar side group b. non-polar side group c. acidic side group d. basic side group Draw an unambiguous structure for each of the amino acids you chose, in the full propionate form (at pH=0). That is, all oxygen/sulfur sites should be neutral, and appropriate amino sites should have a+1 charge. For full credit, show all stereochemistry properly. a. b. c. CIRCLE the side groups for...
4) Draw the titration curves for the amino acids Lysine and Alanine. Be sure to label your axes. (5 pts) a) Identify the pKi, pK and pKR (if relevant) for each amino acid. b) Identify the buffering region around pKR for arginine c) Identify the pl of each amino acid d) Draw the structure of the primary chemical species in each pH region of the titration curve.
Can anyone confirm if these are correct? List and draw the structure(s) the amino acid(s) in which would have a-1 net charge at pH? List the amino acid(s) in which would have a + 1 net charge at pH 7? Draw the structure- of the peptide Arg-Asp-His-Ser-Gly at pH 7. List the N-terminus and C-terminus. Make sure the amide bonds are 'trans'. Give the products of a trypsin digestion of the peptide: His-phe-lys-val-asp-asp-arg-val Draw the full structure of the predominant...
On paper draw a dipeptide, clearly showing the peptide bond joining the two amino acids together. If the two amino acids are valine and threonine, predict the overall charge of the dipeptide at pH 7. Do not forget to consider the amino (N-terminal) and carboxy (C-terminal) of the dipeptide, as well as the R groups. Select one: a. +2 b. -2 c. 0 d. -1 e. +1
"R" group polarity nonpolar, polar, or polar with H- bonds. 1. choose any two know amino acids with similar Rf and based on the size and polarity of their side chains, give an explanation for why their retention factors are similar. 2. choose any two known amino acids with very different Rf values and based on the size and polarity of their side chains, give an explanation for why their retention factors are dissimilar. 3. Explain why lysines Rf is...
Name and draw two amino acids, one that is a hydrogen bond donor as a side chain and one that is hydrogen bond acceptor as a side chain.
9: Draw Lewis dot structures and give requested information. a: SeOs polar or nonpolar? b: SH20 name the geometry c: CH2F2 show dipole direction 10: a: The XeOF2 molecule has two different isomers (forms). Do the LDS of XeOF2 b: Do both line structures. Do they have the same polarity? (Xenon, by coincidence, has similar electronegativity as other elements in its diagonal.)