Aquaglyceroporins

Aquaglyceroporins are recognized as a subset of the aquaporin family of proteins which conduct water, glycerol and other small, uncharged solutes. They are the only mammal proteins which are able to permeate glycerol through the plasma membrane.[1] Aquaglyceroporins are found in many species including bacteria, plants and humans. Because of their ubiquitous nature they are important in agriculture as well as medicine. They have been identified as a possible source of metalloid contamination in agriculture as aquaglyceroporins were have been shown to conduct As(III) and Sb(III) in yeast and could be a possible source of metalloids entering the food sources of humans.[2]

Clinical Significance

Aquaporin-7 has been the subject of study in adipose tissue as it is a major source of circulating glycerol in the mammalian metabolism. The dysregulation of Aquaporin-7 has been associated with obesity in humans and has been associated with the regulation of adipocyte metabolism. [1]

Aquaporin-9 a major glycerol channel in mouse erythrocytes has been found to contribute to the intraethrocytic stages of malarial infection and the dysfunction of the protein has been found to increase the survival in clinical studies involving mice.[3]

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References
  1. Madeira, Ana; Moura, Teresa F.; Soveral, Graça (2015-02-01). "Aquaglyceroporins: implications in adipose biology and obesity". Cellular and Molecular Life Sciences. 72 (4): 759–771. doi:10.1007/s00018-014-1773-2. ISSN 1420-682X. PMID 25359234.
  2. Bhattacharjee, Hiranmoy; Mukhopadhyay, Rita; Thiyagarajan, Saravanamuthu; Rosen, Barry P. (2008-09-01). "Aquaglyceroporins: ancient channels for metalloids". Journal of Biology. 7 (9): 33. doi:10.1186/jbiol91. ISSN 1475-4924. PMC 2776386. PMID 19014407.
  3. Liu, Yangjian; Promeneur, Dominique; Rojek, Aleksandra; Kumar, Nirbhay; Frøkiær, Jørgen; Nielsen, Søren; King, Landon S.; Agre, Peter; Carbrey, Jennifer M. (2007-07-24). "Aquaporin 9 is the major pathway for glycerol uptake by mouse erythrocytes, with implications for malarial virulence". Proceedings of the National Academy of Sciences of the United States of America. 104 (30): 12560–12564. Bibcode:2007PNAS..10412560L. doi:10.1073/pnas.0705313104. ISSN 0027-8424. PMC 1941508. PMID 17636116.


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