Protein Information

Name phosphate carrier
Synonyms Mitochondrial carrier; PTP; Mitochondrial phosphate carrier protein; OK/SW cl.48; PHC; Phosphate carrier; PiC; SLC25A3…

Compound Information

Name rotenone
CAS

Reference List

PubMed Abstract RScore(About this table)
444501 Le Quoc K, Le Quoc D, Gaudemer Y: Influence of the energetic state of mitochondria on the inhibition of oxidative phosphorylation by N-ethylmaleimide. Biochim Biophys Acta. 1979 May 9;546(2):356-64.

Using a reversible thiol reagent (mersalyl), in order to protect the phosphate carrier against irreversible action of N-ethylmaleimide, it was found that: (a) when mersalyl-pretreated mitochondria were in a 'non-energized' state, i.e. preincubated without a substrate and in the presence of rotenone, only a slight inhibition of succinate oxidation coupled to ATP synthesis by N-ethylmaleimide was observed. (b) when mersalyl-pretreated mitochondria were in an 'energized' state, i.e. preincubated in the presence of an oxidizable substrate, N-ethylmaleimide strongly inhibited the coupled oxidation of succinate. 2.
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35536 Villalobo A, Lehninger AL: The proton stoichiometry of electron transport in Ehrlich ascites tumor mitochondria. J Biol Chem. 1979 Jun 10;254(11):4352-8.


With succinate as substrate and N-ethylmaleimide to prevent interfering H+ reuptake via the phosphate carrier, close to 8 H+ were ejected per oxygen atom reduced (H+/O ejection ratio = 8.0); with the NAD-linked substrates pyruvate or pyruvate + malate, the H+/O ejection ratio was close to 12.
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10727400 Rossignol R, Letellier T, Malgat M, Rocher C, Mazat JP: Tissue variation in the control of oxidative phosphorylation: implication for mitochondrial diseases. Biochem J. 2000 Apr 1;347 Pt 1:45-53.


The analysis of control coefficient distribution shows two tissue groups: (i) the muscle and the heart, controlled essentially at the level of the respiratory chain; and (ii) the liver, the kidney and the brain, controlled mainly at the phosphorylation level by ATP synthase and the phosphate carrier.
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