New answers tagged biochemistry
3
votes
Allowed Deviations in fixed bond length and bond angles in peptides from the typical values
Single-conformation descriptions of the native-state ensemble, under ambient conditions, are expected to have close to ideal geometries. This is a result from Statistical Mechanics; the probability of ...
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1
vote
Pathway where carbon dioxide captured by phosphoenolpyruvate is not re-released?
Q. Are there known pathways in plants that use substantial amounts of this oxaloacetate for anabolism?
A. No on two counts:
“This oxaloacetate” is used in C4 plants for the specific purpose of ...
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1
vote
What are the units of Q10 (temperature sensitivity)?
This is a nice example of mathematical sloppiness which is more often present in textbooks on biology than on chemistry or physics where perople are more careful about dimensional analysis*.
The ...
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3
votes
Aerobic respiration takes place in the mitochondria; anaerobic respiration takes place in the cytoplasm. Is there a biochemical reason for this?
The problems here would seem to be (1) a misconception of the biochemistry of anaerobic respiration — strictly anaerobic glycolysis or fermentation (see this Wikipedia article for explanation of the ...
- 23.8k
6
votes
What is the energy of activation of uncatalyzed ATP hydrolysis reaction? Say in aquous solvent?
The 2014 paper of Wang and colleagues found the activation energy of ATP at 32.5 kcal/mol. See the reference for details. The image is figure 3 from the reference.
Reference:
QM/MM Investigation of ...
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7
votes
What is the energy of activation of uncatalyzed ATP hydrolysis reaction? Say in aquous solvent?
The activation energy of ATP hydrolysis at in the pH range 3–9 was determined by Kahn and Mohan in 1974 and found to be 28.0 to 20.7 kcal/mole. At neutrality (i.e. uncatalysed) it would appear to be:
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