SUIT-014 O2 pfi D042

high-resolution terminology - matching measurements at high-resolution

SUIT-014 O2 pfi D042

Description

Abbreviation: NS(PGM)

Reference: A

SUIT number: D042_1GM;2D;3P;4S;5U;6Rot;7Ama

O2k-Application: O2

SUIT-category: NS(PGM)

SUIT protocol pattern: diametral 1GM;2D;3P;4S;5U;6Rot;7Ama

References

Steps and respiratory states

Step	State	Pathway	Q-junction	Comment - Events (E) and Marks (M)
1GM	GM_L(n)	N	CI	1GM NADH-linked substrates (type N-pathway to Q). Non-phosphorylating resting state (LEAK state); LEAK respiration L(n) in the absence of ADP, ATP, AMP (no adenylates).
2D	GM_P	N	CI	1GM;2D NADH-linked substrates (type N-pathway to Q). OXPHOS capacity P (with saturating [ADP]), active OXPHOS state.
2c	GMc_P	N	CI	1GM;2D;2c NADH-linked substrates (type N-pathway to Q). Addition of cytochrome c yields a test for integrity of the mtOM (cytochrome c control efficiency). Stimulation by added cytochrome c would indicate an injury of the mtOM and limitation of respiration in the preceding state without added c due to loss of cytochrome c. Typically, cytochrome c is added immediately after the earliest ADP-activation step (OXPHOS capacity P with saturating [ADP]). OXPHOS capacity P (with saturating [ADP]), active OXPHOS state.
3P	PGM_P	N	CI	1GM;2D;2c;3P NADH-linked substrates (type N-pathway to Q). OXPHOS capacity P (with saturating [ADP]), active OXPHOS state.
4S	PGMS_P	NS	CI&II	1GM;2D;2c;3P;4S Respiratory stimulation by simultaneous action of type N substrates & succinate, with convergent electron flow in the NS-pathway for reconstitution of TCA cycle function. OXPHOS capacity P (with saturating [ADP]), active OXPHOS state.
5U	PGMS_E	NS	CI&II	1GM;2D;2c;3P;4S;5U Respiratory stimulation by simultaneous action of type N substrates & succinate, with convergent electron flow in the NS-pathway for reconstitution of TCA cycle function. Uncoupler titration (avoiding inhibition by high uncoupler concentrations) to obtain electron transfer (ET) capacity E (noncoupled ET-state). Test for limitation of OXPHOS capacity P by the phosphorylation system (ANT, ATP synthase, phosphate transporter) relative to ET capacity E in mt-preparations: E-P control efficiency and E-L coupling efficiency. In living cells: E-R control efficiency and E-L coupling efficiency. Noncoupled electron transfer state, ET state, with ET capacity E.
6Rot	S_E	S	CII	1GM;2D;2c;3P;4S;5U;6Rot Succinate, S ( type S-pathway to Q). Noncoupled electron transfer state, ET state, with ET capacity E.
7Ama	ROX			1GM;2D;2c;3P;4S;5U;6Rot;7Ama Rox is the residual oxygen consumption in the ROX state, due to oxidative side reactions, estimated after addition of antimycin A (inhibitor of CIII). Rox is subtracted from oxygen flux as a baseline for all respiratory states, to obtain mitochondrial respiration (mt).