Can you explain the answer and how to locate the alpha carbon? 16. Identify the functional groups on the amino acid glutamine and mark the Ca.HO.NH₂17. The amino acid serine is represented below. Indicate its organic groups and Ca.HOOCHHOH₂CmNH₂

The proteins are constituted of twenty naturally occurring amino acids.The α-Amino acids (AAs) are…

Answered: 16. Identify the functional groups on…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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1. Draw the structure of the omega-6 fatty acid 16:1. Give the (simplified) systematic name of the fatty acid.
g) (CH3)₂ - CH₂ -CH-COOH + CH₂-CH-COOH -H₂O NH₂ OH NH₂ 4. Write the equation for the digestion (hydrolysis) of Phe-Asp-Ala. €
7. Draw and give the full names of the amino acids in the following dipeptides. ČHS HN- OH CH, CH- OH CH2
b. Identify (name) each of the following two monosaccharides A and B. НО ОН ОН По A ОН -ОН но- Но Но ОН в ОН c. The disaccharide lactose is built up by one D-galacto-and one D-gluco monosaccharide unit. Draw L-galactose in the Fischer projection (open) form and in its most stable pyranose ring conformation form and determine if the latter is a ¹C4 or a 4C₁ conformation.
29. Amino Acid Chemistry: Using the amino acid chart provided..Ala-Lys-Cys & give the isoelectric point for the tripeptide. Table 23.2 The pK, Values of Amino Acids pk, a-COOH a-NH3* Amino acid side chain Alanine 2.34 9.69 2.17 9.04 12.48 Arginine Asparagine 2.02 8.84 3.86 Aspartic acid Cysteine 2.09 9.82 1.92 10.46 8.35 Glutamic acid 2.19 9.67 4.25 Glutamine 2.17 9.13 Glycine 2.34 9.60 1.82 9.17 6.04 Histidine 2.36 9.68 Isoleucine Leucine 2.36 9.60 2.18 $ 95 10.79 Lysine 2.28 9.21 Methionine 16 9.18 Phenylalanine 1.99 10.60 Proline 2.21 9.15 Serine 2.63 9.10 Threonine 2.38 9.39 Tryptophan Tyrosine 9.11 10.07 2.20 2.32 9.62 Valine O something else! 5.14 O 8.65 something else! 5.81 9.02 9.57
Provide the correct three-letter abbreviation for the following amino acid: Gln ← H₂N-CH-C-C 1 CH3 Ala Arg Asn Asp Cys Glu Gly His lle Leu Lys 包
1. Cysteine is an important amino acid that stabilizes the structure of peptides and proteins by the formation of disulfide bond with another cysteine residue. Illustrate the titrimetric profile of cysteine and calculate its isoelectric pH. [Hint: The sulfhydryl group is titratable] 2. The tripeptide Glu-Pro-Arg (EPR) which is a product of Lactobacillus casei fermentation of milk was found to have potent blood pressure lowering properties. Draw the structure of the tripeptide, give its systematic name, show its titration profile, and determine its isoelectric pH.
identify the amino acid described. state the name, one-letter abbreviation, and draw the structure at pH 12.0 a non-polar essential amino acid capable of donating 1 carbon moiety in metabolism
Select the choice that best describes the stereochemistry of the following amino acid, and rank the priority of the four groups surrounding the alpha carbon (in DESCENDING order: 1-highest 4-lowest) NH₂ CO₂II CH₂SH Cysteine H D and S, (1-NH2, 2-CH2SH, 3-COOH, 4-H) Land R, (1-NH2, 2-COOH, 3-CH2SH, 4-H) OL and R, (1-NH2, 2-CH2SH, 3-COOH, 4-H) D and S, (1-CH2SH, 2-COQH, 3-NH2, 4-H) H
1.Ala-Phe-Lys-Val-Val-Glu From the above polypeptide, what amino acid/s go/goes inside the cell after the following treatment: Chemotrypsin, thermolysin, then finally pepsin. What protein is left undigested? Write the primary structure of the undigested protein? 2.K-V-F-W-P-L-A-Y a.Chemotrypsin treatment b.Trypsin treatment c.Pepsin treatment d.Thermolysin treatment 3.Total acid hydrolysis of a pentapeptide complemented by total alkalinehydrolysis yields an equimolar mixture of 5 amino acids listed alphabetically, ala-cys,lys,phe,ser. N-terminal analysis with phenylisothiocyanate (PITC) generate PTH-ser. Trypsin digestion produces a tripeptide where N-terminal residue is cys and a dipeptide with ser as its N- terminal.Chemotrypsin digestion of the above tripeptide yields ala plus another dipeptide. A.What is the amino acid sequence of the tripeptide B.What is the amino acid sequence of the dipeptide derived from trypsin digestion? C.What is the primary structure of the original…
tyrosine 2. 3) Sketch the titration curve for apertic acid. Be sure to labeleach pk., the pl, zwitterion, and draw the dominant forms of the aminoacid along the curve just ke your lab report, the lecture slides and Figure 3.7 on page 69 of your textbook.
Answer the questions regarding the tripeptide shown. H3N-CH- -C N-CH-C-N-CH-C-O | CH СНОН H CH2 H3C CH3 CH3 SH Which amino acid is the C-terminal amino acid? threonine cysteine methionine valine What is the name'of this tripeptide, using the three-letter amino acid abbreviations? Capitalize the first let

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16. Identify the functional groups on the amino acid glutamine and mark the Ca. HO. I. 17. The amino acid serine is represented below. Indicate its organic groups and Ca. HOOC HO H₂ H minu.... NH3¹