Two identical proteins are synthesized chemically,one with D-amino acids and the other with L-amino acids,that produce purely a-helical structures. Draw their respective CD(circular dichroism) spectra.
Two identical proteins are synthesized chemically,one with D-amino acids and the other with L-amino acids,that produce...
Question 1 (1 point) Amino acids used in proteins generally are L-amino acids neither L nor D amino acids both L and D amino acids D-amino acids Question 2 (1 point) o be Polar R groups, along with acidic and basic R groups are said Question 2 (1 point) Polar R groups, along with acidic and basic R groups, are said to be.because the are attracted to water molecules. hydrophobic hydrophilic ionized unreactive Question 3 (1 point) Which of the...
All amino acids in proteins are Select one: O a. alpha-amino acid O b. (R)-amino acids c. acidic O d chiral
All amino acids in proteins are Select one: O a. (R)-amino acids b. chiral c. alpha-amino acid O 0 d. acidic
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...
Proteins are made from chains of amino acids. The amino acids are joined together by structures called peptide bonds. Draw the dipeptide that results when a peptide bond is formed between the two glycine molecules shown here. (Figure 1) Draw it as it would occur at the pHpH of most body fluids. Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active by default. Include all...
The amino acids which occur in most proteins are a. none. b. all of the L-form. c. neither L-and D-forms d. either the L-or D-form. e. all of the D-form.
All of the amino acids that are used to synthesize human proteins (with the exception of glycine) have which one of the following in common? An aromatic group A hydroxyl group An asymmetric carbon in the D-configuration An asymmetric carbon in the L-configuration An asymmetric β-carbon Please explain the reasoning behind the correct answer.
1. A.) Draw the tripeptide corresponding to Cys-Met-Arg with the correct stereochemistry for L-amino acids found in most proteins. B.) Draw the principle structural form the amino acid with the one-letter code of E. Assume that the pH of the solution is 7.4.
CHE 1211 L-General, Organic and Biological Chemistry Lab PROTEINS AND AMINO ACIDS Name: Date: Lab Instructor: Lab Section: PRELAB ASSIGNMENT 1. Draw the structure of the amino acid Serine (Ser), which has R -CH2-OH. Label the alpha carbon 2. Draw the dipeptide that forms between serine and alanine. The dipeptide sequence is Ser-Ala. Label the peptide bond. 3. How many amino acid residues are in a polypeptide containing 6 peptide bonds? How many peptide bonds are in a tripeptide?
Translation: Select one: a involves the production of proteins O b.involves tRNA transferring amino acids to ribosomes O c. is initiated when mRNA binds to the ribosomal subunits O d. all of the above