1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
QveST [7]
3 years ago
10

Biochemistry The famous Anfinsen protein folding experiment was the first to show that the amino acid sequence of a protein can

be sufficient to determine its structure. This experiment used the enzyme ribonuclease A, which contains four disulfide bonds. First, urea and beta-mercaptoethanol were added to a solution of RNase A, with the result that protein activity was lost. Next, urea was slowly removed by dialysis. Finally, beeta-mercaptoethanol was removed by dialysis, with the result that almost all of the original protein activity was regained. What happens when the order of the last two steps is swapped: beta-mercaptoethanol is removed first, then urea is removed.
A) Non-native disulfide bonds form after beta-mercaptoethanol is removed, so the protein cannot refold correctly
B) Half the original activity is regained
C) The original disulfide bonds reform, but the protein still cannot refold
D) The disulfide bonds do not reform, but activity is regained anyway
E) The protein still refolds the same way.
Chemistry
1 answer:
OverLord2011 [107]3 years ago
5 0

Answer:

The A option is the correct answer: Non-native disulfide bonds form after beta-mercaptoethanol is removed, so the protein cannot refold correctly

Explanation:

Beta-Mercaptoehanol is responsible to reduce the four disulfide bonds present in ARNase; Urea deals with non covalente bonds.  In presence of both ARNase is denatured.

If Urea is first removed by dialysis, and later is removed Beta-Mercaptoethanol, the enzyme recovers ist activity.

If Beta-Mercaptoethanol is first removed, disulfide bonds different from native use to be formed.  As a result ARNase is not an active enzyme

You might be interested in
The elements potassium (K), Calcium (Ca), and Krypton(Kr) are all part of the same __________ on the periodic table. A) Diagonal
Pavel [41]
The answer is C, I believe.
6 0
3 years ago
What are two systems that use radio waves
Goshia [24]
Mobile radio communication
Broadcasting
Navigation systems
7 0
3 years ago
Which two chemical substances are needed to begin the photosynthesis factory process?
Rudiy27
<span>Carbon dioxide CO2 and water H2O. Through photosynthesis makes sugar C6H12O6.</span>
5 0
3 years ago
16. The structure shown is representative of which substituted hydrocarbon?
Viktor [21]

Answer:

The answer is B. Ether

Explanation:

An atom of Oxygen between a carbon chain is called Ether

5 0
3 years ago
Which isomer of 1-tert-butyl-3-ethyl-5-methylcyclohexane below is thermodynamically the most stable?
Agata [3.3K]
<h2>Answer:</h2>

Option A is correct.

<h3>Explanation:</h3>

In the options given below the isomer given in the option A of 1-tert-butyl-5-methylcyclohexane is the most stable of all. The IUPAC name for this compound is 1-tert-butyl-3-ethyl-5-methylbenzene.

7 0
3 years ago
Other questions:
  • Cyclohexane (C6H12) is a hydrocarbon (a substance containing only carbon and hydrogen) liquid. Which of the following will most
    10·1 answer
  • True or false <br> On the Celsius temperature scale there are not negative numbers
    11·2 answers
  • 3. 79,789kJ = (293k) (377kJ)
    5·1 answer
  • Why do we need to study chemistry?
    6·1 answer
  • What is formula of matter
    13·1 answer
  • No link just right answer
    9·1 answer
  • A desert that contains plants and animals that have been there a long time is<br> an example of
    11·1 answer
  • 13. Explain two of the methods of separating mixtures that are used to make wheat flour. Be specific
    5·1 answer
  • The question is in the photo
    15·1 answer
  • Please help balance <br> _Ch7H16+_O2=_CO2+_H2O
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!