High-capacity urate transporter, which may play a role in the urate reabsorption by proximal tubules (PubMed:18327257, PubMed:18701466, PubMed:22647630, PubMed:28083649, PubMed:36749388). May have a residual high-affinity, low-capacity glucose and fructose transporter activity (PubMed:18327257, PubMed:18701466, PubMed:18842065). Transports urate at rates 45- to 60-fold faster than glucose (PubMed:18842065). Does not transport galactose (PubMed:28083649). May mediate small uptake of adenine but not of other nucleobases (PubMed:22647630).
Hypouricemia renal 2
RHUC2
A disorder characterized by impaired uric acid reabsorption at the apical membrane of proximal renal tubule cells, and high urinary urate excretion. Patients often appear asymptomatic, but may be subject to exercise-induced acute renal failure, chronic renal dysfunction and nephrolithiasis.
None
The disease is caused by variants affecting the gene represented in this entry.
Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family. Glucose transporter subfamily.
Isoform 1
Most strongly expressed in basolateral membranes of proximal renal tubular cells, liver and placenta. Also detected in lung, blood leukocytes, heart skeletal muscle and chondrocytes from articular cartilage. Detected in kidney membrane (at protein level).
Isoform 2
Only detected in the apical membranes of polarized renal tubular cells and placenta. Detected in kidney membrane (at protein level).
GLUT9, SLC2A9, Glucose transporter type 9, Urate transporter, GLUT-9
Proteins
Immunology & Infectious Disease
58702Da
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ab223470