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SCORPION-xisa [38]
3 years ago
14

Why do you turn a C-terminal aminoacid's carboxyl group into an ester before reducing it to an alcohol? Why not just use LiAlH4

and do it in one step? This is to determine the C-terminal aminoacid in a peptide
Chemistry
2 answers:
taurus [48]3 years ago
8 0

Answer: To determine the C-terminal amino acid in a peptide

Explanation: To determine C-terminal residue, either of chemical reagent or the enzyme is used carboxypeptidase. The chemical reagent hydrazine forms aminoacyl hydrazides with every residue except the C terminus The C terminus is identified by chromatographic procedures.

Carboxypeptidase is an exopeptidase that specifically hydrolyzes the C-terminal peptide bond and releases the C-terminal amino acid. There two problems associated with its use: the continuous action of the enzyme and the substrate specificity of the enzyme. This continuous action may yield the second, third, and additional residues from some chains even before the terminal residues on every chain are quantitatively released. Therefore making it difficult to determine which residue is the C terminus.

Troyanec [42]3 years ago
4 0

Answer:

Esters are both inorganic and organic acids .... Regarding the second question, it is believed that it is carried out in this way in order to recognize the C-terminal amino acid in a peptide within a protein

Explanation:

The explanation of this question is according to what was interpreted in the question, since it is considered that it is poorly written ...

What happens in this chemical reaction is that it first becomes an ester (organic or inorganic acid) so that it is later recognized in the complex peptide structure.

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Carbonated drinks are a mixture of many compounds such as glucose(sugar) and others, while water is simply its own molecule.
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Which of the following is a characteristic of a scientific theory
Andru [333]

Answer:

number one

Explanation:

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8 0
3 years ago
if you react 100g of ammonium chloride with excess calcium oxide, what Is the theoretical yeild (in grams) of ammonia? when you
Maurinko [17]

Answer:

31.78 grams

25.55%

Explanation:

The balanced reaction for ammonium chloride with calcium oxide will be:

2NH4Cl + Ca(OH)2 ---> CaCl2 + 2NH3 + 2H2O

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If the actual yield is 8.12g, the percent yield will be: 8.12g/31.78g * 100% =25.55%

4 0
3 years ago
Draw the alkyne formed when 1,1-dichloro-4-methylpentane is treated with an excess of a strong base such as sodium amide. (give
alisha [4.7K]
Co2 is correct buddy
4 0
3 years ago
An aqueous solution contains 0.29 M of benzoic acid (HA) and 0.16 M of sodium benzoate (A-). If the pH of this solution was meas
Inga [223]

Answer:

pKa = 4.89.

Explanation:

We can solve this problem by using the <em>Henderson-Hasselbach equation</em>, which states:

pH = pKa + log \frac{[A^-]}{[HA]}

In this case [A⁻] is the concentration of sodium benzoate and [HA] is the concentration of benzoic acid.

We <u>input the given data</u>:

4.63 = pKa + log \frac{0.16}{0.29}

And <u>solve for pKa</u>:

pKa = 4.89

3 0
3 years ago
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