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> PKs, differences between PKs and ATPases
m4x1m1n1o
post Feb 08, 2007, 03:26 AM
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hello ppl,
I know that Protein Kinases do phosphorilate other proteins that get activated by this. but I also know ATPases do this huh.gif . My question are:
1. There are differences between PKs and ATPases?
2. Are all the PKs also ATPases?
TY wacko.gif
m4x
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Casey
post Feb 08, 2007, 07:18 AM
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QUOTE(m4x1m1n1o @ Feb 08, 2007, 05:26 AM) *

hello ppl,
I know that Protein Kinases do phosphorilate other proteins that get activated by this. but I also know ATPases do this huh.gif . My question are:
1. There are differences between PKs and ATPases?
2. Are all the PKs also ATPases?
TY wacko.gif
m4x


That's a pretty tough question.
Most protein kinases are ATPases and vice versa.

I'm not sure, but...
I believe most protein kinases would be ATPases, yet ATPases aren't necessarily protein kinases.

As far as I know, all ATPases don't always breakdown ATP specifically to phosphorylate proteins, so you couldn't really consider them protein kinases in general.
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m4x1m1n1o
post Feb 08, 2007, 07:56 AM
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QUOTE(Casey @ Feb 08, 2007, 04:18 PM) *

As far as I know, all ATPases don't always breakdown ATP specifically to phosphorylate proteins, so you couldn't really consider them protein kinases in general.


firstable TY for answer to me happy.gif
I studied that ATPases are a class of enzymes that catalyze the decomposition of ATP into ADP+P‚ .
do u know any ATPase that dont do this? blink.gif
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Casey
post Feb 12, 2007, 10:18 AM
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QUOTE(m4x1m1n1o @ Feb 08, 2007, 09:56 AM) *

I studied that ATPases are a class of enzymes that catalyze the decomposition of ATP into ADP+P‚ .
do u know any ATPase that dont do this? blink.gif


Breaking down ATP is part of the inherent definition of an ATPase. I believe all ATPases breakdown ATP.
But, I don't think that all ATPases breakdown ATP specifically to phosphorylate proteins.

I think there are a few which simply produce a free inorganic phosphate group.
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m4x1m1n1o
post Feb 14, 2007, 12:42 PM
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QUOTE(Casey @ Feb 12, 2007, 07:18 PM) *

Breaking down ATP is part of the inherent definition of an ATPase. I believe all ATPases breakdown ATP.
But, I don't think that all ATPases breakdown ATP specifically to phosphorylate proteins.

I think there are a few which simply produce a free inorganic phosphate group.


this makes sense! plus there is to say that PKs phosphorylate only serine/thryonine or tyrosine kinds of aminoacids that could be found in the substrate subunit!
TY again n nice to meet ya!
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Casey
post Feb 14, 2007, 07:49 PM
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QUOTE(m4x1m1n1o @ Feb 14, 2007, 02:42 PM) *

TY again n nice to meet ya!


Nice to meet ya too bro. Hope you stick around and chime in every now and then smile.gif
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