All amino acids have a carboxylic group and amino group. Why is it impractical to try...

All amino acids have a carboxylic group and amino group. Why is it impractical to try and determine the pKa of the carboxylic group?

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queen_honey_blossom answered 1 hour ago

Given that the pKas of the α-amino group and the α-carboxylic acid group in an amino...

Given that the pKas of the α-amino group and the α-carboxylic acid group in an amino acid are about 9 and 2 respectively, explain why the zwitterion is the predominant form of an amino acid at pH 7.

All amino acids have two ionizable functional groups: an α-amino group (average pKa of 9.4) and...

All amino acids have two ionizable functional groups: an α-amino group (average pKa of 9.4) and an α-carboxylic acid group (average pKa of 2.2). Arginine also has an ionizable side chain (R group) with a pKa of ~12.5. One of the possible ionization states of arginine is shown below. At what pH would the above structure be the predominant ionization state? Note: Consider the ionization state of all three of the functional groups. The protonated form of the R group...

Proteins are ______________ built from amino acids, which each have an amino group

Proteins are ______________ built from amino acids, which each have an amino group and a _____________ group attached to the central _______________. There are twenty possible _______________ that differ in structure and are generally referred to as “R.” In solutions of neutral pH, amino acids are _______________, carrying both a positive and negative charge. When a protein is made, amino acids are linked together through _______________, which are formed by condensation reactions between the carboxyl end of the last amino...

Does all Nonpolar amino acids have the same titration curve?

1)What are amino acids? Amino group, carboxyl end, what is the side chain of an amino...

1)What are amino acids? Amino group, carboxyl end, what is the side chain of an amino acid? 2)What are essential and non-essential amino acid. 3)Which are the essential amino acids? 4)Classify the amino acids based on polarity of the R group:

Why doesnt the 2,4 DNPH test work for carboxylic acids?

What charge does a protonated amino group have? Deprotonated? What charge does a protonated carboxylic acid...

What charge does a protonated amino group have? Deprotonated? What charge does a protonated carboxylic acid have? Deprotonated?

Which of the following amino acids exists predominantly as a zwitterion? The terminal amino group, terminal...

Which of the following amino acids exists predominantly as a zwitterion? The terminal amino group, terminal carboxyl group, and side chain pKa values can be found in Table 3.1 (Any pKa table). A. leucine at pH = 10 B. histidine at pH = 5 C. glutamic acid at pH = 3.5 D. tyrosine at pH = 11.5 E. lysine at pH = 7

1. The carboxylic acid group of an amino acid has a pKa of approximately 2. However,...

1. The carboxylic acid group of an amino acid has a pKa of approximately 2. However, carboxylic acids like benzoic acid and acetic acid have pKas in the range of 4-5 pKa units. Explain why the carboxylic acid of an amino acid is more acidic. 2. Consider the amino acid arginine: a. At physiological pH (pH = 7.4), what is the predominant form in solution? b. What percent of the carboxylic acid group is ionized at this pH? c. What...

why is proline more hydrophilic than all of the other hydrophobic amino acids? ( need to...

why is proline more hydrophilic than all of the other hydrophobic amino acids? ( need to consider the electronegativity of nitrogen and carbon and then carefully look at proline's structure in relation to other hydrophobic amino acids

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