Why are the 20 common amino acids chiral?
All amino acids in proteins are Select one: O a. (R)-amino acids b. chiral c. alpha-amino acid O 0 d. acidic
Which of the following are true of the 20 common amino acids? Pick ALL that apply. A. They are polymers used to make proteins. B. They are β-amino acids. C. They all have the same carboxylic acid group. D. They all have the same R-group. E. They all have the same amino group.
Q6- Theonine is one of the 20 amino acids found in proteins. At physiological (pH 7) is threonine better represented by structural formula A or B? Circle the appropriate structure Explain your answer in words. Are there any chiral centers in this molecule? If so mark the chiral centers on anyone of the two structures with an asterisk (*) н H. ОН NH3 NH2 A 6
Q6- Theonine is one of the 20 amino acids found in proteins. At physiological...
All amino acids in proteins are Select one: O a. alpha-amino acid O b. (R)-amino acids c. acidic O d chiral
1.) Why is it that amino acids in proteins are called a-amino acids? 2.) explain alpha, amino, and acid . Please answer questions 1&2 !
Assuming 20 common amino acids and 20 different monosaccharide subunits that are available for construction of polypeptides and oligosaccharides, respectively, compare the possible variations of these macromolecules using a hypothetical hexameric oligomer. 206 possible variations for both polypeptides and oligosaccharides 620 variations for both polypeptide and oligosaccharides 206 variations for polypeptides and orders of magnitude greater for oligosaccharides 206 variations for oligosaccharides and orders of magnitude greater for polypeptides
Proteins are complex biological molecules made of smaller molecules called amino acids. Five common amino acids and their K, values are listed below. Rank them from strongest to weakest acid. Amino acid pka glutamine 2.2 arginine 1.7 threonine 2.5 tryptophan 2.4 proline 2.0
Which three statements about amino acids are true? Use this chart of amino acid structures for reference. Lysine has one stereocenter (chiral center). Methionine is a thiol. The Leu side chain does not form hydrogen bonds with other amino acids. The form of glycine used by the human body is D-glycine. Ser and Thr are polar amino acids. Proline has an overall charge at physiological pH (7.4).
Why are transmembrane domain made of hydrophobic amino acids?
Why should a vegetarian be concerned about "limiting" amino acids? Briefly explain why this concept is a concern in the vegetarian diet and how a vegetarian can compensate for limiting amino acids in specific foods.