ArticleFEBS letters2020
The first intracellular loop is essential for the catalytic cycle of the human ABCG2 multidrug resistance transporter.
Article in FEBS letters, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 7 citations in OpenAlex.
- ABCG2 Transporter: From Structure to Function-Current Insights and Open Questions.International journal of molecular sciences · 2025Review
- Article
- Tumor-acquired somatic mutation affects conformation to abolish ABCG2-mediated drug resistance.Drug resistance updates : reviews and commentaries in antimicrobial and anticancer chemotherapy · 2024Article
- A new porphyrin as selective substrate-based inhibitor of breast cancer resistance protein (BCRP/ABCG2).Chemico-biological interactions · 2022Article
- Multidrug Resistance in Mammals and Fungi-From MDR to PDR: A Rocky Road from Atomic Structures to Transport Mechanisms.International journal of molecular sciences · 2021Review
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The human multidrug transporter ABCG2 is required for physiological detoxification and mediates anticancer drug resistance. Here, we identify pivotal residues in the first intracellular loop (ICL1), constituting an intrinsic part of the transmission interface. The architecture includes a triple helical bundle formed by the hot spot helix of the nucleotide-binding domain, the elbow helix, and ICL1. We show here that the highly conserved ICL1 residues G462, Y463, and Y464 are essential for the proper cross talk of the closed nucleotide-binding domain dimer with the transmembrane domains. Hence, ICL1 acts as a molecular spring, triggering the conformational switch of ABCG2 before substrate extrusion. These data suggest that the ABCG2 transmission interface may offer therapeutic options for the treatment of drug-resistant malignancies.
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