QUESTION 19 0.5 points Save Answer A histidine in a protein was found to have a
ID: 265360 • Letter: Q
Question
QUESTION 19 0.5 points Save Answer A histidine in a protein was found to have a pna ui v.J. Select all of the listed situations that could account for this elevated pKa. The histidine is found in a highly positively charged environment. The histidine is being deprotonated by a nearby amino acid acting as a base. The histidine is found in a highly nonpolar environment The histidine is found in a highly polar environment. The histidine is located in a highly negatively charged environment. QUESTION 20 0.5 points Save Answer Which supersecondary structure is observed above? p-barrel a, B-barrel TIM barrel o double-barrel a-barrelExplanation / Answer
Ans-19 the following statements are correct for this situation
1) the histadine is being deprotonated by an amino acid acting as a base.
2) this histadine is found in a highly polar environment.
3) this histadine is located in highly negatively environment.
Ans-20 the correct option is beta barrel .
The diagram is showing a 8 stranded beta barrel, the yellow lines are beta strands and the blue line in this is Vitamin A.