Homework Answers
a) It is Leucine, Leu. Because it contain isobutyl group. pH range is 9.7-14.0 because above 9.6, both groups get deprotonated.
b) It is serine, Ser. Because it contain CH2OH group. pH range is 2.3-9.0 because above 2.3,only COOH group deprotonate.
c) It is glutamic acid, Glu. Because it contain CH2CH2COOH group. pH range is 2.2-4.2 because above 2.2, only COOH group deprotonate and below 4.2 all other groups protonate.
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6) For the following forms of amino acids, provide the name, the 3-letter abbreviation and indicate...
what are the answers to these? 6. For the following amino acids, write its 3-letter abbreviation...
what are the answers to these?
6. For the following amino acids, write its 3-letter abbreviation draw its structure, and write its classification Amino acids are classified as nonpolar, polar noutral, polar acidic or polar basic, depending on the side chain present Isoleucine Asparagine Tyrosine Abbreviation Structure Serine Arginine Cysteine Name 3-Letter Abbreviation Structure Classification
Fill in the blanks for each amino acid Amino Acid Properties Name of R-group Properties Amino...
Fill in the blanks for each amino acid
Amino Acid Properties Name of R-group Properties Amino Acid Type of Polarity pKa Charge at Special functional group pH-7 Properties (hn(wpp)amgies applicable) (whpee Alanine Arginine Asparagine Aspartate Carboxyl Polar 3.9 Sulfhydryl Polar N/A Forms S-S Glutamine Glutamate Histidine Isoleucine Lysine Methionine Phenylalanine Aromatic Non-Polar Absorbs G@ 280 nm N/A Proline Can be Serine Threonine Tryptophane Tyrosine Valine
1. What amino acids do the following abbreviations stand for? Draw the structure of each. a)...
1. What amino acids do the following abbreviations stand for? Draw the structure of each. a) lle b) Thr c) Gin 2. Name and draw the structures of the amino acids that fit these descriptions: a) Contains an isopropyl group b) Contains a secondary alcohol group 3. Which of the following objects is chiral? a) A pair of scissors b) A comb c) A drinking glass 4. What does the term achiral mean? Give two examples involving organic structures.. 5....
The chemical structures of the 20 standard amino acids at pH 7, along with their 3...
The chemical structures of the 20 standard amino acids at pH 7, along with their 3 and 1 letter codes, are givern in alphabetical order below. While the oxygen and nitrogen atoms of the peptide bonds may serve as a donor atom to complex a metal ion, very often the ligands for the metal come from the amino acid side chains. Takea few moments to examine the chemical structures of the different side chains. Circle the side chains that you...
C,D, and E i need help with. 17. The following peptide forms part of Human Hemoglobin...
C,D, and E i need help with.
17. The following peptide forms part of Human Hemoglobin subunit gammaa Asp-Leu-Lys-Gly-Thr-Phe-Ala A) Which amino acids are likely to be on the side of peptid acids are likely to be on the side of peptide that faces the interior of the protein? Insert your answer leu, Gto.Pne, Ala B) Which are likely to be facing the aqueous environment? Insert your answer Asp, lys, Thr Draw the structure of the sequence at pH7.4. Using...
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon...
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon has an ester attached c. They are symmetrical d. They are planar e. The α-carbon has a phosphate group attached 2. Which is an incorrect statement regarding the side chains of amino acids? a. Tryptophan, tyrosine, and phenylalanine contain an aromatic group. b. Isoleucine, and leucine are isomers of each other. c. Lysine and methionine contain an amine group. d. Threonine, serine, and tyrosine...
Amino Acids SW C2 9. Which of the following is an L-amino acid? çoo coo coo...
Amino Acids SW C2 9. Which of the following is an L-amino acid? çoo coo coo HẠN |-R HANH, HẠN –H HÀNH R coo B. 10. The following questions refer to the structures A-E below: (a) Which represents the structure of an amino acid at very high pH? (b) Which is a zwitterion? (c) Which represents the structure of an amino acid at very low pH? (d) Which structure/(s) is/are) not possible? R-CH-COOR-CH-COOH R-CH-COOH R-CH-COOR -CH-COO NH2 NH2 *NH NH2...
Choose three amino acids, no more than one of each of the following types: a. polar...
Choose three amino acids, no more than one of each of the following types: a. polar side group b. non-polar side group c. acidic side group d. basic side group Draw an unambiguous structure for each of the amino acids you chose, in the full propionate form (at pH=0). That is, all oxygen/sulfur sites should be neutral, and appropriate amino sites should have a+1 charge. For full credit, show all stereochemistry properly. a. b. c. CIRCLE the side groups for...
6. At neutral pH, which of the following amino acids has a net positive charge, which...
6. At neutral pH, which of the following amino acids has a net positive charge, which has a net negative charge, and which is neutral? (Hint: Draw the various charged forms of each amino acid before deciding.) a) Aspartic acid b) Histidine c) Valine 7. Which of the following forms of aspartic acid would you expect to predominate at low pH, neutral pH, and high pH? a) 10_char Line HOC-CH-CH-CO- +NH, b) ._ança do OC-CH-CH-CO- NH2 HOC-CH.CH +NH
6. Indicate the stereoisomer of the following amino acids: coo -NH3 н- R соо "н,N- -H...
6. Indicate the stereoisomer of the following amino acids: coo -NH3 н- R соо "н,N- -H 7.What number of amino acids were used to form this oligopeptide? NH2 он NH Он 8. What is the R group of alanine? Use IUPAC nomenclature to refer to R group as a substituent.
what are the answers to these?
6. For the following amino acids, write its 3-letter abbreviation draw its structure, and write its classification Amino acids are classified as nonpolar, polar noutral, polar acidic or polar basic, depending on the side chain present Isoleucine Asparagine Tyrosine Abbreviation Structure Serine Arginine Cysteine Name 3-Letter Abbreviation Structure Classification
Fill in the blanks for each amino acid
Amino Acid Properties Name of R-group Properties Amino Acid Type of Polarity pKa Charge at Special functional group pH-7 Properties (hn(wpp)amgies applicable) (whpee Alanine Arginine Asparagine Aspartate Carboxyl Polar 3.9 Sulfhydryl Polar N/A Forms S-S Glutamine Glutamate Histidine Isoleucine Lysine Methionine Phenylalanine Aromatic Non-Polar Absorbs G@ 280 nm N/A Proline Can be Serine Threonine Tryptophane Tyrosine Valine
1. What amino acids do the following abbreviations stand for? Draw the structure of each. a) lle b) Thr c) Gin 2. Name and draw the structures of the amino acids that fit these descriptions: a) Contains an isopropyl group b) Contains a secondary alcohol group 3. Which of the following objects is chiral? a) A pair of scissors b) A comb c) A drinking glass 4. What does the term achiral mean? Give two examples involving organic structures.. 5....
The chemical structures of the 20 standard amino acids at pH 7, along with their 3 and 1 letter codes, are givern in alphabetical order below. While the oxygen and nitrogen atoms of the peptide bonds may serve as a donor atom to complex a metal ion, very often the ligands for the metal come from the amino acid side chains. Takea few moments to examine the chemical structures of the different side chains. Circle the side chains that you...
C,D, and E i need help with.
17. The following peptide forms part of Human Hemoglobin subunit gammaa Asp-Leu-Lys-Gly-Thr-Phe-Ala A) Which amino acids are likely to be on the side of peptid acids are likely to be on the side of peptide that faces the interior of the protein? Insert your answer leu, Gto.Pne, Ala B) Which are likely to be facing the aqueous environment? Insert your answer Asp, lys, Thr Draw the structure of the sequence at pH7.4. Using...
1. Which is a true statement about amino acids? a. They are amphiprotic b. The a-carbon has an ester attached c. They are symmetrical d. They are planar e. The α-carbon has a phosphate group attached 2. Which is an incorrect statement regarding the side chains of amino acids? a. Tryptophan, tyrosine, and phenylalanine contain an aromatic group. b. Isoleucine, and leucine are isomers of each other. c. Lysine and methionine contain an amine group. d. Threonine, serine, and tyrosine...
Amino Acids SW C2 9. Which of the following is an L-amino acid? çoo coo coo HẠN |-R HANH, HẠN –H HÀNH R coo B. 10. The following questions refer to the structures A-E below: (a) Which represents the structure of an amino acid at very high pH? (b) Which is a zwitterion? (c) Which represents the structure of an amino acid at very low pH? (d) Which structure/(s) is/are) not possible? R-CH-COOR-CH-COOH R-CH-COOH R-CH-COOR -CH-COO NH2 NH2 *NH NH2...
Choose three amino acids, no more than one of each of the following types: a. polar side group b. non-polar side group c. acidic side group d. basic side group Draw an unambiguous structure for each of the amino acids you chose, in the full propionate form (at pH=0). That is, all oxygen/sulfur sites should be neutral, and appropriate amino sites should have a+1 charge. For full credit, show all stereochemistry properly. a. b. c. CIRCLE the side groups for...
6. At neutral pH, which of the following amino acids has a net positive charge, which has a net negative charge, and which is neutral? (Hint: Draw the various charged forms of each amino acid before deciding.) a) Aspartic acid b) Histidine c) Valine 7. Which of the following forms of aspartic acid would you expect to predominate at low pH, neutral pH, and high pH? a) 10_char Line HOC-CH-CH-CO- +NH, b) ._ança do OC-CH-CH-CO- NH2 HOC-CH.CH +NH
6. Indicate the stereoisomer of the following amino acids: coo -NH3 н- R соо "н,N- -H 7.What number of amino acids were used to form this oligopeptide? NH2 он NH Он 8. What is the R group of alanine? Use IUPAC nomenclature to refer to R group as a substituent.
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