A structure-activity study of fatty acid interaction with mitochondrial uncoupling protein

. 1997 May 19 ; 408 (2) : 166-70.

Jazyk angličtina Země Anglie, Velká Británie Médium print

Typ dokumentu časopisecké články, práce podpořená grantem, Research Support, U.S. Gov't, Non-P.H.S., Research Support, U.S. Gov't, P.H.S.

Perzistentní odkaz   https://www.medvik.cz/link/pmid09187360

Grantová podpora
GM31086 NIGMS NIH HHS - United States

Odkazy

PubMed 9187360
DOI 10.1016/s0014-5793(97)00335-9
PII: S0014-5793(97)00335-9
Knihovny.cz E-zdroje

Fatty acid (FA) uniport via mitochondrial uncoupling protein (UcP) was detected fluorometrically with PBFI, potassium-binding benzofuran phthalate and SPQ, 6-methoxy-N-(3-sulfopropyl)-quinolinium, indicating K+ and H+, respectively. The FA structural patterns required for FA flip-flop, UcP-mediated FA uniport, activation of UcP-mediated H+ transport in proteoliposomes, and inhibition of UcP-mediated Cl- uniport by FA, were identical. Positive responses were found exclusively with FA which were able to flip-flop in a protonated form across the membrane and no responses were found with 'inactive' FA lacking the flip-flop ability. The findings support the existence of FA cycling mechanism.

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