johnwandering

10+ Year Member
May 18, 2009
432
6
Status
I was wondering what exactly was different about these two regions of the mitochondria. They seem to occupy the same description....
 

chiddler

5+ Year Member
Apr 6, 2010
2,440
4
Status
Medical Student
I was wondering what exactly was different about these two regions of the mitochondria. They seem to occupy the same description....
intermembrane space is region outside inner membrane, but within outer membrane. it is the space between the mito's two membranes.

cristae is infoldings of the mitochondrial membrane

oh wow reading linked thread above there may be more than i'm saying.

no nevermind they just differentiate between inter and intracristal space.
 
About the Ads

MedPR

Removed
Dec 1, 2011
18,579
50
Status
Pre-Podiatry
Crista = membrane folds

Intermembrane space = space between membranes.
 

pfaction

10+ Year Member
Mar 14, 2010
2,225
79
WV
Status
Resident [Any Field]
So if the ATP synthase is on the inner membrane, is H+ coming from inTER or inTRA cristae space? I want to say inter, because intra cristae space iirc is the matrix.
 

chiddler

5+ Year Member
Apr 6, 2010
2,440
4
Status
Medical Student
So if the ATP synthase is on the inner membrane, is H+ coming from inTER or inTRA cristae space? I want to say inter, because intra cristae space iirc is the matrix.
mito matrix is basic. H+ ions flow inside.

so H+ comes from intercristal space.

i've never really encountered this term, inter/intracristal, outside these forums for what it's worth.
 

MedPR

Removed
Dec 1, 2011
18,579
50
Status
Pre-Podiatry
Inter/intra crista are made up.. stop using them.

The intermembrane space is more acidic than the matrix.
 

typicalindian

5+ Year Member
7+ Year Member
Dec 25, 2010
2,343
13
Status
Medical Student
Inter/intra crista are made up.. stop using them.

The intermembrane space is more acidic than the matrix.
This.

Protons are constantly being pumped from the matrix into the intermembrane space through the ETC. The potential energy that is created due to their electrochemical gradient allows them to power ATP synthase.
 

gettheleadout

MD
Moderator Emeritus
10+ Year Member
Jun 23, 2010
11,814
2,785
Status
Resident [Any Field]
i've never really encountered this term, inter/intracristal, outside these forums for what it's worth.
Inter/intra crista are made up.. stop using them.

The intermembrane space is more acidic than the matrix.
I encountered "intercristal" in my cell bio course... In any case I think I've explained it the best I can in the thread milski linked.
 
About the Ads