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Aquaglyceroporins: generalized metalloid channels
Rita Mukhopadhyay1, Hiranmoy Bhattacharjee1, Barry P Rosen1
1Department of Cellular Biology and Pharmacology, Florida International University, Herbert Wertheim College of Medicine, Miami, FL 33199, USA.
Biochimica Et Biophysica Acta
|December 3, 2013
Summary
Aquaporin channels facilitate the transport of metalloids, including toxic arsenic and essential boron, across cell membranes. This understanding aids in managing toxic element uptake in food crops and developing new medical treatments.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Aquaporins (AQPs) are transmembrane channel proteins found in all life forms.
- They are categorized into water-specific aquaporins and aquaglyceroporins, which transport water, solutes, and gases.
- This review focuses on AQPs' role in metalloid transport.
Purpose of the Study:
- To review the bidirectional movement of metalloids through aquaporin channels.
- To elucidate the mechanisms by which AQPs interact with metalloids.
- To explore the implications of metalloid transport by AQPs.
Main Methods:
- Literature review of key findings on AQP-mediated metalloid transport.
- Analysis of genetic data related to metalloid transport substrates.
- Synthesis of existing research on aquaporin function and metalloid interactions.
Main Results:
- Aquaglyceroporins transport metalloids like arsenite (As(OH)3) and antimonite (Sb(OH)3) by mimicking glycerol.
- Plant AQPs transport boric acid (B(OH)3) and orthosilicic acid (Si(OH)4).
- Germanic acid (GeO2) is also identified as a potential AQP substrate.
Conclusions:
- Metalloid transport by AQPs impacts toxic element entry into food chains.
- Understanding AQP-metalloid interactions is crucial for developing metalloid-based drugs.
- Genetic modification of crops like rice to control arsenic uptake while retaining beneficial elements is feasible.
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