SUIT-017 O2 pfi D049: Difference between revisions
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::: '''[[SUIT protocol pattern]]:''' diametral 1OctM;2D;2c;3G;4S;5U;6Rot- | ::: '''[[SUIT protocol pattern]]:''' diametral 1OctM;2D;2c;3G;4S;5U;6Rot- | ||
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Revision as of 13:06, 3 July 2020
Description
Abbreviation: FNS(Oct,GM)
Reference: A: SUIT-017
SUIT number: D049_1OctM;2D;2c;3G;4S;5U;6Rot;7Ama
O2k-Application: O2
- MitoPedia: SUIT
- SUIT-category: FNS(Oct,GM)
- SUIT protocol pattern: diametral 1OctM;2D;2c;3G;4S;5U;6Rot-
SUIT-017 O2 pfi D049 gives information on F-pathway in LEAK state and OXPHOS state avoiding fatty acid oxidation (FAO) overestimation in the presence of anaplerotic pathways. In addition, the pathway control of FN and FNS in OXPHOS state and of FNS and S in ET state is evaluated. Permeabilized muscle fibers are sensitive to oxygen supply due to limited diffusion of oxygen to the fiber bundle core. To counteract this limitation, hyperoxic conditions (400-250 ยตM O2) must be employed. To set the optimal oxygen concentration in the O2k-Chamber, see Setting the oxygen concentration.
Communicated by Cardoso LHD, Antunes D and Gnaiger E (last update 2019-07-31)
Steps and respiratory states
Step | State | Pathway | Q-junction | Comment - Events (E) and Marks (M) |
---|---|---|---|---|
1OctM | OctML(n) | F(N) | FAO | 1OctM
|
2D | OctMP | F(N) | FAO | 1OctM;2D
|
3G | OctGMP | FN | F&CI | 1OctM;2D;3G
|
4S | OctGMSP | FNS | F&CI&II | 1OctM;2D;3G;4S
|
5U | OctGMSE | FNS | F&CI&II | 1OctM;2D;3G;4S;5U
|
6Rot | SE | S | CII | 1OctM;2D;3G;4S;5U;6Rot
|
7Ama | ROX | 1OctM;2D;3G;4S;5U;6Rot;7Ama
|
Step | Respiratory state | Pathway control | ET-Complex | Comment |
---|---|---|---|---|
## AsTm | AsTmE | CIV | CIV | |
## Azd | CHB |
- Bioblast links: SUIT protocols - >>>>>>> - Click on [Expand] or [Collapse] - >>>>>>>
- Coupling control
- Pathway control
- ยป Electron transfer pathway
- ยป Fatty acid oxidation pathway control state, F
- ยป NADH electron transfer-pathway state, N
- ยป Succinate pathway control state, S
- ยป NS-pathway control state, NS
- ยป Glycerophosphate pathway control state, Gp
- ยป Complex IV single step, CIV
- ยป Anaplerotic pathway control state
- Pathway control
- Main fuel substrates
- ยป Glutamate, G
- ยป Glycerophosphate, Gp
- ยป Malate, M
- ยป Octanoylcarnitine, Oct
- ยป Pyruvate, P
- ยป Succinate, S
- Main fuel substrates
- Glossary
Strengths and limitations
- Comparison of GM- with PM-capacity yields important information on N-pathway respiratory control upstream of CI (Lemieux et al. 2017; Votion et al. 2012).
- + Glutamate is easier to prepare compared to pyruvate.
- + Reasonable duration of the experiment.
- + This protocol can be extended with the Complex IV module, which can prolong the experimental time with ~30 min.
Compare SUIT protocols
References
Year | Reference | Organism | Tissue;cell | |
---|---|---|---|---|
Pesta 2012 Methods Mol Biol | 2012 | Pesta D, Gnaiger E (2012) High-resolution respirometry. OXPHOS protocols for human cells and permeabilized fibers from small biopsies of human muscle. Methods Mol Biol 810:25-58. https://doi.org/10.1007/978-1-61779-382-0_3 | Human | Skeletal muscle Other cell lines HEK Fibroblast HUVEC |
MitoPedia concepts: SUIT protocol, SUIT A, Find
MitoPedia methods:
Respirometry