FAD and NAD+
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FAD and NAD+
hello
at the moment i am studying for the exam: biochemistry and i don`t understand one thing! actually, i can not find good explanation: what is difference between NAD+ and FAD - i know how they look, where is their place in reactions, even biosynthesis, but why sometimes NAD and sometimes FAD?
i think i`ve missed the point
thanx
vantan

at the moment i am studying for the exam: biochemistry and i don`t understand one thing! actually, i can not find good explanation: what is difference between NAD+ and FAD - i know how they look, where is their place in reactions, even biosynthesis, but why sometimes NAD and sometimes FAD?
i think i`ve missed the point

thanx
vantan
- victor
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From what I know, both NAD+ and FAD+ are electron acceptors. they accept e- that are generated within glycolysis and Krebs cycle..then these e- will be sent outside inner mitochondrion membrane and get them in again through ATP sintase to form ATP.
These reaction happen in krista mitochondria
These reaction happen in krista mitochondria
Q: Why are chemists great for solving problems?
A: They have all the solutions.
A: They have all the solutions.
- MrMistery
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I think this has been said 20 times already but i will say it for the 21th time. The difference is in how much energy it releases. NADH realeases 3 ATP, FADH2 only 2 ATP
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
MrMistery wrote:I think this has been said 20 times already but i will say it for the 21th time. The difference is in how much energy it releases. NADH realeases 3 ATP, FADH2 only 2 ATP
but it's 'indirect' correct

From this point there follows a difference in energy that can be produced due to the generation of a different proton gradient.
- MrMistery
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Yeah, yeah... We know sdekivit. it's been discussed only 50 times.
Seriosly.. To all the new members, try to search the forum before asking something. it is quite big and we have quite a lot of things here



Seriosly.. To all the new members, try to search the forum before asking something. it is quite big and we have quite a lot of things here
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
- MrMistery
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Hmm.. I knew them the other way around but i may be wrong, since there cellular respiration is not my thing. But NADPH? That is only in photosynthesis from what i know...
Congratulations on your test!
Congratulations on your test!
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
i believe you didn`t understand my question really - i DO know that NADH realeases 3 ATP, FADH2 only 2 ATP!!!
but, i was reading more and found out what i wanted to know - during reduction, NAD and NADP move 2H as ions: one H with 2electrons and H as proton, without electrons; and FAD (and FMN) move two atoms of H - it means 2H, but each has one electron.
and FAD is tighter connected with its enzyme.
uhhh...
but, i was reading more and found out what i wanted to know - during reduction, NAD and NADP move 2H as ions: one H with 2electrons and H as proton, without electrons; and FAD (and FMN) move two atoms of H - it means 2H, but each has one electron.
and FAD is tighter connected with its enzyme.
uhhh...
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