Loose Leaf for General, Organic and Biological Chemistry with Connect 2 Year Access Card
4th Edition
ISBN: 9781260269284
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 21.2, Problem 21.1PP
Draw both enantiomers of each amino acid in Fischer projections and label them as D or L: (a) phenylalanine; (b) methionine.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
(iv) Re-draw the amino acid below in a Fischer projection.
H2N
но,
Me
h) Specify the absolute (R/S) configuration of the amino group in structure IV.
(i) If the substituents in structures I, IV and V were identical (all OH or all NH2), which structure would result in a meso compound?
(j) If each hydroxy group for structures I, II and VI were replaced with another amino group, which compound would be made optically inactive?
Draw both enantiomers of each amino acid and label them as D or L: (a) methionine; (b) asparagine
Chapter 21 Solutions
Loose Leaf for General, Organic and Biological Chemistry with Connect 2 Year Access Card
Ch. 21.2 - In addition to the amino and carboxyl groups, what...Ch. 21.2 - Draw both enantiomers of each amino acid in...Ch. 21.2 - Which of the following amino acids is naturally...Ch. 21.3 - Draw the structure of the amino acid valine at...Ch. 21.3 - Identify the amino acid shown with all uncharged...Ch. 21.4 - Identify the N-terminal and C-terminal amino acid...Ch. 21.4 - Prob. 21.4PCh. 21.4 - Prob. 21.4PPCh. 21.4 - Prob. 21.5PCh. 21.4 - Prob. 21.5PP
Ch. 21.4 - Prob. 21.6PPCh. 21.5 - Prob. 21.6PCh. 21.6 - Prob. 21.7PCh. 21.6 - Prob. 21.8PCh. 21.6 - Prob. 21.9PCh. 21.7 - Why is hemoglobin more water soluble than ...Ch. 21.8 - Prob. 21.7PPCh. 21.8 - Prob. 21.11PCh. 21.9 - Prob. 21.8PPCh. 21.9 - Prob. 21.12PCh. 21.9 - Prob. 21.9PPCh. 21.9 - Prob. 21.13PCh. 21.10 - Prob. 21.14PCh. 21.10 - Prob. 21.15PCh. 21.10 - Prob. 21.16PCh. 21.10 - Prob. 21.17PCh. 21.10 - The nerve gas sarin acts as a poison by covalently...Ch. 21.10 - Prob. 21.19PCh. 21.10 - Explain why the proteins involved in blood...Ch. 21 - The amino acid alanine is a solid at room...Ch. 21 - Why is phenylalanine water soluble but...Ch. 21 - Draw the structure of a naturally occurring amino...Ch. 21 - Draw the structure of a naturally occurring amino...Ch. 21 - For each amino acid: [1] draw the L enantiomer in...Ch. 21 - For each amino acid: [1] draw the L enantiomer in...Ch. 21 - Draw both enantiomers of each amino acid and label...Ch. 21 - Which of the following Fischer projections...Ch. 21 - For each amino acid: [1] give the name; [2] give...Ch. 21 - For each amino acid: [1] give the name; [2] give...Ch. 21 - (a) Identify the amino acid shown with all...Ch. 21 - Prob. 32PCh. 21 - Prob. 33PCh. 21 - Draw the structure of the neutral, positively...Ch. 21 - Locate the peptide bond in the dipeptide shown in...Ch. 21 - Label the N-terminal and C-terminal amino acids in...Ch. 21 - Melittin, the principal toxin of bee venom,...Ch. 21 - Cobratoxin is a neurotoxin found in the venom of...Ch. 21 - (a) Draw the structure of the two possible...Ch. 21 - (a) Draw the structure of the two possible...Ch. 21 - For each tripeptide: [1] draw the structure of the...Ch. 21 - For each tripeptide: [1] draw the structure of the...Ch. 21 - Prob. 43PCh. 21 - For each tripeptide: [1] identify the amino acids...Ch. 21 - What amino acids are formed by hydrolysis of the...Ch. 21 - Prob. 46PCh. 21 - Prob. 47PCh. 21 - Draw the structures of the amino acids formed when...Ch. 21 - Prob. 49PCh. 21 - Prob. 50PCh. 21 - Prob. 51PCh. 21 - Trypsin is a digestive enzyme that hydrolyzes...Ch. 21 - What type of intermolecular forces exist between...Ch. 21 - What type of interaction occur at each of the...Ch. 21 - Which peptide in each pair contains amino acids...Ch. 21 - Decide if the side chains of the amino acid...Ch. 21 - Which type of protein structure is indicated in...Ch. 21 - Label each of the following diagrams as...Ch. 21 - Prob. 59PCh. 21 - Prob. 60PCh. 21 - Prob. 61PCh. 21 - Prob. 62PCh. 21 - Compare - keratin and hemoglobin with regard to...Ch. 21 - Compare collagen and myoglobin with regard to each...Ch. 21 - Prob. 65PCh. 21 - Prob. 66PCh. 21 - Describe the function or biological activity of...Ch. 21 - Describe the function or biological activity of...Ch. 21 - Prob. 69PCh. 21 - Prob. 70PCh. 21 - What class of enzyme catalyzes each of the...Ch. 21 - What class of enzyme catalyzes each of the...Ch. 21 - Prob. 73PCh. 21 - Prob. 74PCh. 21 - Prob. 75PCh. 21 - What kind of reaction is catalyzed by each of the...Ch. 21 - Prob. 77PCh. 21 - How will each of the following changes affect the...Ch. 21 - Prob. 79PCh. 21 - Prob. 80PCh. 21 - Prob. 81PCh. 21 - Prob. 82PCh. 21 - Prob. 83PCh. 21 - Prob. 84PCh. 21 - Prob. 85PCh. 21 - Prob. 86PCh. 21 - Why must vegetarian diets be carefully balanced?Ch. 21 - Prob. 88PCh. 21 - Sometimes an incision is cauterized (burned) to...Ch. 21 - Why is insulin administered by injection instead...Ch. 21 - Prob. 91PCh. 21 - The silk produced by a silkworm is a protein with...Ch. 21 - Explain the difference in the mechanism of action...Ch. 21 - Prob. 94PCh. 21 - Prob. 95CPCh. 21 - Suggest a reason for the following observation....
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Net charge and isoelectric point of an amino acid with an ionizable side group.Consider the net charge and isoelectric point of an amino acid with ionizable side (R-) group.(a) Identify the acidic amino acid(s) capable of having a negatively charged carboxyl side group.(b) Identify the basic amino acid(s) capable of having a positively charged amino side group.(c) For an amino acid with a side (R-) chain that can ionize to a negative charge, derive a general expression in terms of measured pH and known pKa values of α-carboxyla-amino (pKca), α-amino(pKaa),and side group (pKRa), respectively, for the net charge of an amino acid Consider the net charge and isoelectric point of an amino acid with ionizable side (R-) group.(d) For an amino acid with a side (R-) chain that can ionize to a positive charge, derive a general expression in terms of measured pH and known pKa values ofα-carboxyl (pKca), α-amino (pKaa), and side group (pKRa), respectively, for the net charge of the amino acid.(e)…arrow_forwardDraw the stereoisomers of the following amino acids. Indicate pairs of enantiomers and pairs of diastereomers.arrow_forward2. Classify the following amino acids as nonpolar, polar basic, polar acidic, or polar neutral. (a) (b) (c) (d) H₂N-CH-COH CH-OH I CH3 || H₂N-CH-C-OH I CH₂ C=O 1 OH H₂N-CH-C-OH CH₂ T CH-CH3 CH₂ H₂N-CH-C-OH ī CH₂ OH 229arrow_forward
- What a-halo carbonyl compound is needed to synthesize each amino acid: (a) glycine; (b) isoleucine; (c) phenylalanine?arrow_forwardDraw three-dimensional representations of the following amino acids.(a) l-phenylalaninearrow_forwardQ1. Eticlopride is a dopamine antagonist, which can block dopamine receptor sites and influence levels of dopamine. The molecule is involved in a number of intermolecular interactions with amino acids in the G protein-coupled receptor. о но ČI Eticlopride i) Draw a suitable diagram to indicate where the following amino acids might interact with the molecule: phenylalanine; valine; histidine; tyrosine. In your answer, please draw the amino acids and show the interaction. ii) For each interaction you have shown, state the nature of that interaction (e.g. H- bonding, pi-pi etc.)arrow_forward
- Assign an R or S configuration to the chiral center in each amino acid. (a) l-Phenylalanine (b) l-Glutamic acid (c) l-Methioninearrow_forwardWhat alkene is needed to synthesize each amino acid by an enantioselective hydrogenation reaction using H2 and Rh*: (a) alanine; (b) leucine; (c) glutamine?arrow_forward(a) Draw the more stable chair form of fucose, an essential monosaccharide needed in the diet and a component of carbohydrates on mammalian and plant cell surfaces. (b) Classify fucose as a D- or Lmonosaccharide. (c) What two structural features are unusual in fucose?arrow_forward
- Lysine and tryptophan are two amino acids that contain an additional N atom in the R group bonded to the a carbon. While lysine is classified as a basic amino acid because it contains an additional basic N atom, tryptophan is classified as a neutral amino acid. Explain why this difference in classification occurs.arrow_forwardDraw a fischer projections representing the D and L forms of phenylalaninearrow_forwardBoth triglycerides shown below contained fatty acids that are 16 carbon long. However, one is classified as a fat, and the other is regarded as the oil. (A) How does one distinguish fat from oils? (B) Which triglyceride is the fat? Which one is oil?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Introduction to General, Organic and BiochemistryChemistryISBN:9781285869759Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar TorresPublisher:Cengage Learning
Introduction to General, Organic and Biochemistry
Chemistry
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Cengage Learning
Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY