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Structural and functional diversity calls for a new classification of ABC transporters


Thomas, Christoph; Aller, Stephen G; Beis, Konstantinos; Carpenter, Elisabeth P; et al; Martinoia, Enrico (2020). Structural and functional diversity calls for a new classification of ABC transporters. FEBS letters, 594(23):3767-3775.

Abstract

Members of the ATP‐binding cassette (ABC) transporter superfamily translocate a broad spectrum of chemically diverse substrates. While their eponymous ATP‐binding cassette in the nucleotide‐binding domains (NBDs) is highly conserved, their transmembrane domains (TMDs) forming the translocation pathway exhibit distinct folds and topologies, suggesting that during evolution the ancient motor domains were combined with different transmembrane mechanical systems to orchestrate a variety of cellular processes. In recent years, it has become increasingly evident that the distinct TMD folds are best suited to categorize the multitude of ABC transporters. We therefore propose a new ABC transporter classification that is based on structural homology in the TMDs.

Abstract

Members of the ATP‐binding cassette (ABC) transporter superfamily translocate a broad spectrum of chemically diverse substrates. While their eponymous ATP‐binding cassette in the nucleotide‐binding domains (NBDs) is highly conserved, their transmembrane domains (TMDs) forming the translocation pathway exhibit distinct folds and topologies, suggesting that during evolution the ancient motor domains were combined with different transmembrane mechanical systems to orchestrate a variety of cellular processes. In recent years, it has become increasingly evident that the distinct TMD folds are best suited to categorize the multitude of ABC transporters. We therefore propose a new ABC transporter classification that is based on structural homology in the TMDs.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Plant and Microbial Biology
07 Faculty of Science > Zurich-Basel Plant Science Center
Dewey Decimal Classification:580 Plants (Botany)
Scopus Subject Areas:Life Sciences > Biophysics
Life Sciences > Structural Biology
Life Sciences > Biochemistry
Life Sciences > Molecular Biology
Life Sciences > Genetics
Life Sciences > Cell Biology
Uncontrolled Keywords:Biophysics, Genetics, Cell Biology, Biochemistry, Molecular Biology, Structural Biology
Language:English
Date:1 December 2020
Deposited On:19 Jan 2021 16:23
Last Modified:20 Jan 2021 21:02
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0014-5793
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1002/1873-3468.13935

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