Outer mitochondrial membrane - Revision history

Vipul: /* Summary */

2024-04-20T01:42:17Z

Summary

← Older revision		Revision as of 01:42, 20 April 2024
Line 22:		Line 22:
	\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.		\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.
	\|-		\|-
	\| What's on both sides of it \|\| The outside is the [[cytoplasm]], i.e., the rest of the cell. The inside is the [[intermembrane space of mitochondrion]], that separates the outer and inner mitochondrial membranes.		\| What's on both sides of it \|\| The outside is the [[cytoplasm]], i.e., the rest of the cell (and more specifically, the [[cytosol]]). The inside is the [[intermembrane space of mitochondrion]], that separates the outer and inner mitochondrial membranes.
	\|-		\|-
	\| Structural components \|\| Similar to any [[biological membrane]], it has a [[lipid bilayer]] (comprising phospholipids) as well as large numbers of [[integral membrane protein]]s called [[porin]]s.		\| Structural components \|\| Similar to any [[biological membrane]], it has a [[lipid bilayer]] (comprising phospholipids) as well as large numbers of [[integral membrane protein]]s called [[porin]]s.

Vipul: /* Summary */

2024-04-20T01:41:56Z

Summary

← Older revision		Revision as of 01:41, 20 April 2024
Line 18:		Line 18:
	\| Number of outer mitochrondrial membranes per cell \|\| Same as the number of mitochondria: 1 to 1000s, depending on the energy needs of the cell		\| Number of outer mitochrondrial membranes per cell \|\| Same as the number of mitochondria: 1 to 1000s, depending on the energy needs of the cell
	\|-		\|-
	\| Size \|\| <math>60 - 75</math> angstrom thickness, compared with mitochondrial tubular radius of <math>0.5 - 1.0 \mu m</math> and length of <math>1 - 4 \mu m</math>, so the thickness is about 1% of the ~~diameter~~ of the mitochondrion.		\| Size \|\| <math>60 - 75</math> angstrom thickness, compared with mitochondrial tubular radius of <math>0.5 - 1.0 \mu m</math> and length of <math>1 - 4 \mu m</math>, so the thickness is about 1% of the length of the mitochondrion.
	\|-		\|-
	\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.		\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.

Vipul: /* Size and shape */

2024-04-18T05:22:25Z

Size and shape

← Older revision		Revision as of 05:22, 18 April 2024
Line 42:		Line 42:

	[[File:Lipid bilayer section.gif]]		[[File:Lipid bilayer section.gif]]

	~~The th~~

Vipul at 05:21, 18 April 2024

2024-04-18T05:21:14Z

← Older revision		Revision as of 05:21, 18 April 2024
Line 32:		Line 32:
	\| Control of the entry and exit of materials \|\| The outer mitochondrial membrane pretty freely allows small molecules to pass through, so the intermembrane space has a similar chemical composition as the [[cytosol]]. Large molecules are not allowed.		\| Control of the entry and exit of materials \|\| The outer mitochondrial membrane pretty freely allows small molecules to pass through, so the intermembrane space has a similar chemical composition as the [[cytosol]]. Large molecules are not allowed.
	\|}		\|}

			==Size and shape==

			{{size measures backgrounder}}

			===Thickness as a lipid bilayer===

			The outer mitochondrial membrane is a [[biological membrane]], with its main piece (that defines its thickness) being a [[lipid bilayer]]. Lipid bilayers in general look like this; there are two lipids stacked up, so that the total thickness is the sum of the thicknesses of the two layers, which in turn are the diameters of the associated lipid molecules.

			[[File:Lipid bilayer section.gif]]

			The th

Vipul: /* Summary */

2024-04-18T05:16:12Z

Summary

← Older revision		Revision as of 05:16, 18 April 2024
Line 18:		Line 18:
	\| Number of outer mitochrondrial membranes per cell \|\| Same as the number of mitochondria: 1 to 1000s, depending on the energy needs of the cell		\| Number of outer mitochrondrial membranes per cell \|\| Same as the number of mitochondria: 1 to 1000s, depending on the energy needs of the cell
	\|-		\|-
	\| Size \|\| <math>60 - 75</math> angstrom thickness, compared with mitochondrial ~~diameter~~ of <math>0.5 - 1.0 \mu m</math>, so the thickness is about 1% of the diameter of the mitochondrion.		\| Size \|\| <math>60 - 75</math> angstrom thickness, compared with mitochondrial tubular radius of <math>0.5 - 1.0 \mu m</math> and length of <math>1 - 4 \mu m</math>, so the thickness is about 1% of the diameter of the mitochondrion.
	\|-		\|-
	\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.		\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.

Vipul at 17:34, 20 November 2022

2022-11-20T17:34:44Z

← Older revision		Revision as of 17:34, 20 November 2022
Line 3:		Line 3:
	==Definition==		==Definition==

	The '''outer mitochondrial membrane''' is the ''outer'' membrane of the [[mitochondrion]], an [[organelle]] found in most [[eukaryotic cell]]s. It is an example of a [[biological membrane]]. It comprises a [[lipid bilayer]] along with various [[integral membrane protein]]s embedded in that bilayer. It helps control the entry and exit of materials between the mitochondrion on the inside and the [[cytoplasm]] that surrounds it on the outside. The immediate inside side of the outer mitochondrial membrane is the [[intermembrane space]].		The '''outer mitochondrial membrane''' is the ''outer'' membrane of the [[mitochondrion]], an [[organelle]] found in most [[eukaryotic cell]]s. It is an example of a [[biological membrane]]. It comprises a [[lipid bilayer]] along with various [[integral membrane protein]]s embedded in that bilayer. It helps control the entry and exit of materials between the mitochondrion on the inside and the [[cytoplasm]] that surrounds it on the outside. The immediate inside side of the outer mitochondrial membrane is the [[intermembrane space of mitochondrion]].

	The mitochondrion also has an [[inner mitochondrial membrane]] which is ''also'' a lipid bilayer; the intermembrane space separates the outer and inner mitochondrial membranes.		The mitochondrion also has an [[inner mitochondrial membrane]] which is ''also'' a lipid bilayer; the intermembrane space separates the outer and inner mitochondrial membranes.
Line 22:		Line 22:
	\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.		\| Location within mitochondrion \|\| The outer mitochondrial membrane fully encloses the mitochondrion.
	\|-		\|-
	\| What's on both sides of it \|\| The outside is the [[cytoplasm]], i.e., the rest of the cell. The inside is the [[intermembrane space]], that separates the outer and inner mitochondrial membranes.		\| What's on both sides of it \|\| The outside is the [[cytoplasm]], i.e., the rest of the cell. The inside is the [[intermembrane space of mitochondrion]], that separates the outer and inner mitochondrial membranes.
	\|-		\|-
	\| Structural components \|\| Similar to any [[biological membrane]], it has a [[lipid bilayer]] (comprising phospholipids) as well as large numbers of [[integral membrane protein]]s called [[porin]]s.		\| Structural components \|\| Similar to any [[biological membrane]], it has a [[lipid bilayer]] (comprising phospholipids) as well as large numbers of [[integral membrane protein]]s called [[porin]]s.

Vipul at 16:22, 20 November 2022

2022-11-20T16:22:20Z

← Older revision		Revision as of 16:22, 20 November 2022
Line 1:		Line 1:
			{{component of organelle\|mitochondrion}}

	==Definition==		==Definition==

Vipul: /* Summary */

2022-04-02T06:19:35Z

Summary

← Older revision		Revision as of 06:19, 2 April 2022
Line 22:		Line 22:
	\| What's on both sides of it \|\| The outside is the [[cytoplasm]], i.e., the rest of the cell. The inside is the [[intermembrane space]], that separates the outer and inner mitochondrial membranes.		\| What's on both sides of it \|\| The outside is the [[cytoplasm]], i.e., the rest of the cell. The inside is the [[intermembrane space]], that separates the outer and inner mitochondrial membranes.
	\|-		\|-
	\| Structural components \|\| Similar to any [[biological membrane]], it has a [[lipid bilayer]] (comprising ~~phosholipids~~) as well as large numbers of [[integral membrane protein]]s called [[porin]]s.		\| Structural components \|\| Similar to any [[biological membrane]], it has a [[lipid bilayer]] (comprising phospholipids) as well as large numbers of [[integral membrane protein]]s called [[porin]]s.
	\|-		\|-
	\| Chemical constituents \|\| Phosopholipids and [[integral membrane protein]]s called [[porin]]s; the ratio is about 1:1 by weight, similar to the [[cell membrane]].		\| Chemical constituents \|\| Phosopholipids and [[integral membrane protein]]s called [[porin]]s; the ratio is about 1:1 by weight, similar to the [[cell membrane]].

Vipul: /* Summary */

2022-04-02T06:18:48Z

Summary

← Older revision		Revision as of 06:18, 2 April 2022
Line 26:		Line 26:
	\| Chemical constituents \|\| Phosopholipids and [[integral membrane protein]]s called [[porin]]s; the ratio is about 1:1 by weight, similar to the [[cell membrane]].		\| Chemical constituents \|\| Phosopholipids and [[integral membrane protein]]s called [[porin]]s; the ratio is about 1:1 by weight, similar to the [[cell membrane]].
	\|-		\|-
	\| Evolutionary origin \|\| According to the [[endosymbiotic theory of mitochondrial origin]], the mitochondrion descends from endosymbiotic prokaryotes inside the eukaryotic cell. The outer mitochondrial membrane, correspondingly descends from a membrane created by the host cell to firewall the endosymbiont's access to the rest of the cell.		\| Evolutionary origin \|\| According to the [[endosymbiotic theory of mitochondrial origin]], the mitochondrion descends from endosymbiotic prokaryotes inside the eukaryotic cell. The outer mitochondrial membrane correspondingly descends from a membrane created by the host cell to firewall the endosymbiont's access to the rest of the cell.
	\|-		\|-
	\| Control of the entry and exit of materials \|\| The outer mitochondrial membrane pretty freely allows small molecules to pass through, so the intermembrane space has a similar chemical composition as the [[cytosol]]. Large molecules are not allowed.		\| Control of the entry and exit of materials \|\| The outer mitochondrial membrane pretty freely allows small molecules to pass through, so the intermembrane space has a similar chemical composition as the [[cytosol]]. Large molecules are not allowed.
	\|}		\|}

Vipul: /* Definition */

2022-04-02T06:17:50Z

Definition

← Older revision		Revision as of 06:17, 2 April 2022
Line 1:		Line 1:
	==Definition==		==Definition==

	The '''outer mitochondrial membrane''' is the ''outer'' membrane of the [[mitochondrion]], an [[organelle]] found in most [[eukaryotic cell]]s. It is an example of a [[biological membrane]]. It comprises a [[lipid bilayer]] along with various [[integral membrane protein]]s embedded in that bilayer. It helps control the entry and exit of materials between the mitochondrion on the inside (and the [[cytoplasm]] that surrounds it on the outside. The immediate inside side of the outer mitochondrial membrane is the [[intermembrane space]].		The '''outer mitochondrial membrane''' is the ''outer'' membrane of the [[mitochondrion]], an [[organelle]] found in most [[eukaryotic cell]]s. It is an example of a [[biological membrane]]. It comprises a [[lipid bilayer]] along with various [[integral membrane protein]]s embedded in that bilayer. It helps control the entry and exit of materials between the mitochondrion on the inside and the [[cytoplasm]] that surrounds it on the outside. The immediate inside side of the outer mitochondrial membrane is the [[intermembrane space]].

	The mitochondrion also has an [[inner mitochondrial membrane]] which is ''also'' a lipid bilayer; the intermembrane space separates the outer and inner mitochondrial membranes.		The mitochondrion also has an [[inner mitochondrial membrane]] which is ''also'' a lipid bilayer; the intermembrane space separates the outer and inner mitochondrial membranes.