Why is the alpha carboxyl group pka value 2 ? And why is an alpha amino...
Why is the alpha carboxyl group pka value 2 ?
And why is an alpha amino group pka value 9?
For an amino acid
Homework Answers
The value of pka for alpha carbonyl group is less (2) than the pka value (9) of the alpha amino group because the alpha carbonyl group group is more acidic in nature than the alpha amino group.
The more acidic nature of alpha carbonyl group id due the present of Oxygen atom which help in resonance to stabalize the compound.
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Why is the alpha carboxyl group pka value 2 ?
And why is an alpha amino...
The pKa of the alpha-carboxyl group of phenylalanine is 1.83, and the pKa of its alpha-amino...
The pKa of the alpha-carboxyl group of phenylalanine is 1.83, and the pKa of its alpha-amino group is is 9.13. Calculate the average net charge on phenylalanine if it is in a solution that has a pH of 8.40.
a-carboxyl group pka Amino acid Ala a-amino group pka 9.7 2.3 Arg 9.0 9.0 Asnor Gin...
a-carboxyl group pka Amino acid Ala a-amino group pka 9.7 2.3 Arg 9.0 9.0 Asnor Gin Asp or Glu Cys 9.8 10.8 His 9.2 9.2 9.1 Calculate the pl of ASN: 6.0 2.5 5.5 10.7 5.0
The pKa of the α-carboxyl group of serine is 2.21, and the pKa of its α-amino...
The pKa of the α-carboxyl group of serine is 2.21, and the pKa of its α-amino group is is 9.15. Calculate the average net charge on serine if it is in a solution that has a pH of 8.00
Calculate PI for Argenine (pKa (carboxyl)= 3.1; pKa (amino)= 8.0; and pKa (R group) = 12.5)....
Calculate PI for Argenine (pKa (carboxyl)= 3.1; pKa (amino)= 8.0; and pKa (R group) = 12.5). pH is 7
What is isoelectric point? The amino acid glycine has two ionizable groups: 1) a carboxyl acid...
What is isoelectric point? The amino acid glycine has two ionizable groups: 1) a carboxyl acid group with a pKa of 2.72 and 2) an amino group with a pKa of 9.60. Calculate the pI of glycine.
Explain why amino acid functional groups that participate in acid-base chemistry have perturbed pKa values from sim...
Explain why amino acid functional groups that participate in acid-base chemistry have perturbed pKa values from simple methyl substituted amino and carboxyl groups. (3 points)
Explain why amino acid functional groups that participate in acid-base chemistry have perturbed pKa values from simple methyl substituted amino and carboxyl groups. (3 points)
Note that the pKa of gamma-carboxyl group of glutamic acid is: 4.3. Calculate the pH at...
Note that the pKa of gamma-carboxyl group of glutamic acid is: 4.3. Calculate the pH at which the gamma-carboxyl group of glutamic acid is 3/5 dissociated. What is the concentration of [H^+] in solution at this pH? Show your calculations to receive full credits.
“Amino acids used in making a polypeptide have an amino group and carboxyl group, and these...
“Amino acids used in making a polypeptide have an amino group and carboxyl group, and these groups can be present on any carbon atoms.” Is that a correct statement? Why so? What is the basis for classification of amino acids to non-polar (but not aromatic), polar, and two oppositely charged (at physiological pH) amino acids? Provide examples with their exact name, three letter and single letter codes.
What about the pKa values of the R groups of the seven amino acids containing an...
What about the pKa values of the R groups of the seven amino acids containing an ionizable R group? Tyr 10.5 Lys 10.5 Arg 12.5 Asp 3.9 Glu 4.1 His 6.0 Cys 8.4 Indicate the approximate net charge of each of these seven R groups at pH 7.4. Indicate the approximate net charge of each of these seven amino acids at pH 7.4. Note: remember the carboxyl and the alpha-amino group in addition to the ionizable (acidic or basic) R...
Calculate pI pKa amino terminus is 10.6 carboxyl terminus is 3.9 assume all pKa are the...
Calculate pI
pKa amino terminus is 10.6
carboxyl terminus is 3.9
assume all pKa are the those off free amino acids.
Structure of oligopeptide с дон SCH $-5- CH Ioan i CH, on Peptide bond N Terminal & vol Met - lys I lysine Methionine Tyr - Glee - Ser ;- c terminal Glutanoic L Serine Tyrosine Valine
a-carboxyl group pka Amino acid Ala a-amino group pka 9.7 2.3 Arg 9.0 9.0 Asnor Gin Asp or Glu Cys 9.8 10.8 His 9.2 9.2 9.1 Calculate the pl of ASN: 6.0 2.5 5.5 10.7 5.0
Explain why amino acid functional groups that participate in acid-base chemistry have perturbed pKa values from simple methyl substituted amino and carboxyl groups. (3 points)
Explain why amino acid functional groups that participate in acid-base chemistry have perturbed pKa values from simple methyl substituted amino and carboxyl groups. (3 points)
Note that the pKa of gamma-carboxyl group of glutamic acid is: 4.3. Calculate the pH at which the gamma-carboxyl group of glutamic acid is 3/5 dissociated. What is the concentration of [H^+] in solution at this pH? Show your calculations to receive full credits.
Calculate pI
pKa amino terminus is 10.6
carboxyl terminus is 3.9
assume all pKa are the those off free amino acids.
Structure of oligopeptide с дон SCH $-5- CH Ioan i CH, on Peptide bond N Terminal & vol Met - lys I lysine Methionine Tyr - Glee - Ser ;- c terminal Glutanoic L Serine Tyrosine Valine
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