PMID- 8262223 OWN - NLM STAT- MEDLINE DCOM- 19940126 LR - 20190621 IS - 0014-5793 (Print) IS - 0014-5793 (Linking) VI - 336 IP - 1 DP - 1993 Dec 20 TI - Catalytic and activating protons follow different pathways in the H(+)-ATPase of potato tuber mitochondria. PG - 83-6 AB - The effect of some F0F1 inhibitors on the activation of the H(+)-ATPase by the electrochemical proton gradient was investigated in mitochondria extracted from potato tubers. Transient activated state of the ATPase was revealed by addition of ATP and of the detergent lauryldimethylamine oxide (LDAO) to energized mitochondria. Venturicidin, tri-n-butyltin and aurovertin at high concentrations did not affect the process of delta mu H(+)-activation, whereas oligomycin fully blocked it. The results support the idea of separate pathways or binding sites for catalytic and activating protons. FAU - Valerio, M AU - Valerio M AD - Biosytemes Membranaires (ERS 30), CNRS, 91198 Gif-sur-Yvette, France. FAU - Haraux, F AU - Haraux F LA - eng PT - Journal Article PL - England TA - FEBS Lett JT - FEBS letters JID - 0155157 RN - 0 (Aurovertins) RN - 0 (Detergents) RN - 0 (Dimethylamines) RN - 0 (Oligomycins) RN - 0 (Protons) RN - 0 (Trialkyltin Compounds) RN - 0 (Venturicidins) RN - 4F6FC4MI8W (dodecyldimethylamine oxide) RN - 4XDX163P3D (tributyltin) RN - EC 3.6.3.14 (Proton-Translocating ATPases) SB - IM MH - Aurovertins/antagonists & inhibitors/pharmacology MH - Catalysis MH - Detergents/pharmacology MH - Dimethylamines/pharmacology MH - Enzyme Activation/drug effects MH - Mitochondria/*enzymology MH - Oligomycins/antagonists & inhibitors/pharmacology MH - Proton-Translocating ATPases/antagonists & inhibitors/*metabolism MH - Protons MH - Solanum tuberosum/*enzymology MH - Trialkyltin Compounds/antagonists & inhibitors/pharmacology MH - Venturicidins/antagonists & inhibitors/pharmacology EDAT- 1993/12/20 00:00 MHDA- 1993/12/20 00:01 CRDT- 1993/12/20 00:00 PHST- 1993/12/20 00:00 [pubmed] PHST- 1993/12/20 00:01 [medline] PHST- 1993/12/20 00:00 [entrez] AID - 0014-5793(93)81614-6 [pii] AID - 10.1016/0014-5793(93)81614-6 [doi] PST - ppublish SO - FEBS Lett. 1993 Dec 20;336(1):83-6. doi: 10.1016/0014-5793(93)81614-6.