The SLC17 family are sometimes referred to as Type I sodium-phosphate co-transporters, alongside Type II (SLC34 family) and Type III (SLC20 family) transporters. Within the SLC17 family, however, further subgroups of organic anion transporters may be defined, allowing the accumulation of sialic acid in the endoplasmic reticulum and glutamate (e.g. L-glutamic acid) or nucleotides in synaptic and secretory vesicles. Topology modelling suggests 12 TM domains.

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* Key recommended reading is highlighted with an asterisk

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* Shobeiri N, Adams MA, Holden RM. (2013) Phosphate: an old bone molecule but new cardiovascular risk factor. Br J Clin Pharmacol,  [Epub ahead of print]. [PMID:23506202]