Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
8th Edition
ISBN: 9780134015187
Author: John E. McMurry, David S. Ballantine, Carl A. Hoeger, Virginia E. Peterson
Publisher: PEARSON
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Chapter 20.7, Problem 20.19P
Interpretation Introduction
Interpretation:
The amino acid that bonds with sugar in glycoprotein by the side-chain amide has to be identified.
Concept introduction:
Glycoproteins are formed by bonding between sugar chain and protein chain.
Glutamine and asparagine are the amino acids that have amide group in their side chain.
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In N-linked glycoproteins, the sugar is usually attached to the protein by a bond to the N atom in a side-chain amide. Which amino acids can form such a bond?
which two amino acid have two chiral center？ I know Isoleucine contain two chiral center，how about another AA？
Why is cysteine such an important amino acid for defining the tertiary structure of some proteins?
Chapter 20 Solutions
Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
Ch. 20.1 - Classify the following monosaccharides as an...Ch. 20.1 - Prob. 20.2PCh. 20.2 - Prob. 20.3PCh. 20.2 - Prob. 20.4PCh. 20.2 - Prob. 20.6PCh. 20.3 - D-Talose, a constituent of certain antibiotics,...Ch. 20.3 - Prob. 20.8PCh. 20.3 - Draw the structure that completes the mutarotation...Ch. 20.4 - Prob. 20.10KCPCh. 20.4 - Prob. 20.11P
Ch. 20.4 - Prob. 20.12PCh. 20.4 - Prob. 20.13PCh. 20.4 - Prob. 20.1CIAPCh. 20.4 - Prob. 20.2CIAPCh. 20.4 - All cells in your body contain glycoproteins...Ch. 20.5 - Draw the structure of the and anomers that...Ch. 20.6 - Prob. 20.15PCh. 20.6 - Prob. 20.16PCh. 20.6 - Prob. 20.17KCPCh. 20.7 - Prob. 20.4CIAPCh. 20.7 - Prob. 20.5CIAPCh. 20.7 - Prob. 20.6CIAPCh. 20.7 - Prob. 20.7CIAPCh. 20.7 - Prob. 20.18PCh. 20.7 - Prob. 20.19PCh. 20.7 - Prob. 20.8CIAPCh. 20.7 - Prob. 20.9CIAPCh. 20.7 - Prob. 20.10CIAPCh. 20 - During the digestion of starch from potatoes, the...Ch. 20 - Prob. 20.21UKCCh. 20 - Consider the trisaccharide A, B, C shown in...Ch. 20 - Hydrolysis of both glycosidic bonds in the...Ch. 20 - Prob. 20.24UKCCh. 20 - Are one or more of the disaccharides maltose,...Ch. 20 - Prob. 20.26UKCCh. 20 - Prob. 20.27UKCCh. 20 - Prob. 20.28APCh. 20 - What is the family-name ending for a sugar?Ch. 20 - Prob. 20.30APCh. 20 - Classify the four carbohydrates (a)(d) by...Ch. 20 - Prob. 20.32APCh. 20 - How many chiral carbon atoms are there in each of...Ch. 20 - Prob. 20.34APCh. 20 - Prob. 20.35APCh. 20 - Name four important monosaccharides and tell where...Ch. 20 - Prob. 20.37APCh. 20 - Prob. 20.38APCh. 20 - What is the structural relationship between...Ch. 20 - Prob. 20.40APCh. 20 - In Section 15.6, you saw that aldehydes react with...Ch. 20 - Sucrose and D-glucose rotate plane-polarized light...Ch. 20 - Prob. 20.43APCh. 20 - Prob. 20.44APCh. 20 - Prob. 20.45APCh. 20 - What is mutarotation? Do all chiral molecules do...Ch. 20 - What are anomers, and how do the anomers of a...Ch. 20 - What is the structural difference between the ...Ch. 20 - D-Gulose, an aldohexose isomer of glucose, has the...Ch. 20 - Prob. 20.50APCh. 20 - In its open-chain form, D-altrose has the...Ch. 20 - Prob. 20.52APCh. 20 - Prob. 20.53APCh. 20 - Prob. 20.54APCh. 20 - Prob. 20.55APCh. 20 - What is the structural difference between a...Ch. 20 - What are glycosides, and how can they be formed?Ch. 20 - Prob. 20.58APCh. 20 - Prob. 20.59APCh. 20 - Give the names of three important disaccharides....Ch. 20 - Lactose and maltose are reducing disaccharides,...Ch. 20 - Amylose (a form of starch) and cellulose are both...Ch. 20 - Prob. 20.63APCh. 20 - Prob. 20.64APCh. 20 - Prob. 20.65APCh. 20 - Gentiobiose, a rare disaccharide found in saffron,...Ch. 20 - Prob. 20.67APCh. 20 - Prob. 20.68APCh. 20 - Prob. 20.69APCh. 20 - Amylopectin (a form of starch) and glycogen are...Ch. 20 - What is the physiological purpose of starch in a...Ch. 20 - Prob. 20.72APCh. 20 - Prob. 20.73APCh. 20 - Prob. 20.74CPCh. 20 - Prob. 20.75CPCh. 20 - Prob. 20.76CPCh. 20 - Prob. 20.77CPCh. 20 - Prob. 20.78CPCh. 20 - Write the open-chain structure of the only...Ch. 20 - Prob. 20.80CPCh. 20 - Prob. 20.81CPCh. 20 - When a person cannot digest galactose, its reduced...Ch. 20 - Describe the differences between mono-, di-, and...Ch. 20 - Prob. 20.84CPCh. 20 - Prob. 20.85CPCh. 20 - Many people who are lactose intolerant can eat...Ch. 20 - Prob. 20.87GPCh. 20 - Prob. 20.88GPCh. 20 - Prob. 20.89GP
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- There are 20 standard amino acids and only 10 major monosaccharides in eukaryotes, yet there are so many more possible combinations of monosaccharides in a hexasaccharide than amino acids in a hexapeptide. Explain this observation.arrow_forwardWith the exception of glycine, all of the standard amino acids have one chiral center. Are there any amino acids that have two chiral centers?arrow_forwardGlycine is an amino acid whose side group does not participate in any of the types of side group interactions we discussed in class. Briefly explain why this amino acid's side group does not interact with the side groups of other amino acids.arrow_forward
- Why do amino acids, when dissolved in water, become zwitterions?arrow_forwardIn glycoproteins, what are the 3 amino acids to which the carbohydrate groups are most frequently linked and why is that?arrow_forwardFour of the most abundant amino acids in proteins are leucine, alanine, glycine, and valine. What do these amino acids have in common? Would you expect these amino acids to be found on the interior or on the exterior of theprotein?arrow_forward
- Two cysteine amino acids can react together to form a dibasic bridge between two different parts of the polypeptide chain?arrow_forwardAll L amino acids have an S absolute configuration except L - cysteine, which has the R configuration. Explain why L - cysteine is designated as having the R absolute configuration.arrow_forwardWhich of the following is the C-terminal amino acid in the polypeptide glycyl-alanyl-leucyl-valyl-glutamine? A. Glycine B. Alanine C. Leucine D. Valine E. Glutaminearrow_forward
- Which of the following is NOT a naturally-occurring amino acid?arrow_forwardThe common naturally occurring form of cysteine has a chirality center that is named (R), however; (a) What is the relationship between (R)-cysteine and (S)-alanine? (b) Do they have the opposite three-dimensional configuration (as the names might suggest) or the same configuration? (c) Is (R)-cysteine a D-amino acid or an L-amino acid?arrow_forwardIn sickle cell anemia, an inherited form of anemia in which the hemoglobin distorts the red blood cell to a characteristic sickle shape, the 6th residue of the β chain, a Glu residue, is replaced with a Val residue. This mutation substitutes the ____ Glu with a ____ Val.arrow_forward
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