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Reconstitution of Novel Mitochondrial Uncoupling Proteins UCP2 and UCP3
Abstract
Reconstitution of novel mitochondrial uncoupling proteins, human UCP2 and UCP3, expressed in yeast, was performed to characterize fatty acid (FA)-induced H+ efflux in the resulted proteoliposomes. We now demonstrate for the first time that representatives of physiologically abundant long chain FAs, saturated or unsaturated, activate H+ translocation in UCP2- and UCP3-proteoliposomes. Efficiency of lauric, palmitic or linoleic acid was roughly the same, but oleic acid induced faster H+ uniport. We have confirmed that ATP and GTP inhibit such FA-induced H+ uniport mediated by UCP2 and UCP3. Coenzyme Q10 did not further significantly activate the observed H+ efflux. In conclusion, careful instant reconstitution yields intact functional recombinant proteins, UCP2 and UCP3, the activity of which is comparable with UCP1.
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Metadata
- Authors
- Žáčkova, M., & Ježek, P.
- Affiliations
- Institute of Physiology, Academy of Sciences of the Czech Republic, Vídeňská 1083, 14220, Prague 4, Czech Republic
- Czech Academy of Sciences (CZ)
- ORCID
- Ježek, Petr
- Venue
- Bioscience Reports
- Publisher
- Portland Press Ltd.
- Published
- 2002-02-01
- Volume
- 22
- Issue
- 1
- Pages
- 33-46
- ISSN
- 0144-8463 (ISSN-L)
- 1573-4935
- OpenAlex
- W190962978
- Cited by
- 25
- References
- 57
- Citations by year
- 2022: 1 · 2021: 1 · 2020: 1 · 2019: 1 · 2018: 1 · 2017: 1
- FWCI
- 0.81
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioscience Reports (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › ATP Synthase and ATPases Research
- Health Sciences › Medicine › Physiology (medical) › Adipose Tissue and Metabolism
- Keywords
- UCP2, UCP3, mitochondrial uncoupling proteins, proteoliposomes, long-chain fatty acids, oleic acid, ATP inhibition, GTP inhibition, coenzyme Q10, UCP1
- MeSH terms
- Uncoupling Protein 2, Uncoupling Protein 3, Carrier Proteins, Fatty Acids, Humans, Ion Channels, Mitochondria, Proteins, Yeasts, Mitochondrial Proteins, Membrane Transport Proteins
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