Gradients (ATP Synthases)

NDSU Virtual Cell Animations Project animation 'Gradients (ATP Synthase)'. For more information please see http://vcell.ndsu.edu/animations

Gradients are used to create energy that can power biological cyles. ATP synthase is powered by a hydrogen gradient, located in the mitochondria. This section covers the action of this specific gradient.

Category:

Education

Tags:

• ATP
• cellular
• biology
• gradients

[BlackHockeyMonkey]

good video. could do without the creepy opening though.

[shannunnnnnnn]

yeah please keep making videos so ican pass biology and never ever have to think about it ever again

[joeyws89]

Wow these videos are awesome! So concise. Much better than my former biochemistry teacher! lol

[garoofiya]

@JamesBarker85 The bottom portion of the ATP sythase doesn't spin, only the top part does. The top isn't symmetrical though, so it creates a mechanical change in conformation in the bottom, like a square peg twisting in a round opening, the 3 pairs of alpha/beta subunits are squished into different shapes. Each subunit pair are in a state different than the other two, one state is empty, one has ADP+Pi and the last one has ATP. the three pairs of subunits alternate states, depending their state.

[TheAdobe511]

@shannunnnnnnn wow sums me up too

[JamesBarker85]

Doesn't the bottom portion of ATPsynthase spin as well? My biochem book said that the 3 beta subunits are distinct in that one is always "empty" because its bound to the gamma subunit. Another is awaiting ADP + Pi to come along and be bound, and then the third holds the newly synthesized ATP. When the 3rd unit is turned enough that it has to bind to the gamma subunit, it releases ATP and binds gamma. then the beta unit gets another ADP, turn, makes atp, turn, release atp and bind gamma, etc etc

[RespectMyHate]

@ccbass22 Refer me to a good one.

[ccbass22]

then you should be watching videos on evolution

[RespectMyHate]

I don't see any way this system could have possibly evolved.

[proffezur]

@rhoadess Not only NADH and FADH2 account for the ATP generation. Glucose goes through both glycolysis and kreb cycle.

[shannunnnnnnn]

@fandanstan I'd ask him what he or she got for his eight birthday. Distracted? Yes. Win? Yes.