Defective SLC22A12 does not exchange extracellular urate for cytosolic LACT

Stable Identifier
R-HSA-5625210
Type
Reaction [transition]
Species
Homo sapiens
Compartment
cytosol, extracellular region, plasma membrane
Locations in the PathwayBrowser
Expand all
General
SVG | 
PNG
Low
Medium
High
 | PPTX  | SBGN
Defective SLC22A12 does not exchange extracellular urate for cytosolic LACT
Click the image above or here to open this reaction in the Pathway Browser
The layout of this reaction may differ from that in the pathway view due to the constraints in pathway layout

Urate is a naturally occurring product of purine metabolism and is a scavenger of biological oxidants. Uric acid readily precipitates out of aqueous solutions causing gout and kidney stones. Due to this ability, changes in urate levels are implicated in numerous disease processes. The human gene SLC22A12 encodes urate transporter 1 (URAT1), predominantly expressed in the kidney and is involved in the regulation of blood urate levels. This transport can be trans-stimulated by organic anions such as L-lactate (LACT). Defects in SLC22A12 result in idiopathic renal hypouricaemia 1 (RHUC1; MIM:220150), a disorder characterised by impaired urate reabsorption at the apical membrane of proximal renal tubule cells and high urinary urate excretion. Mutations that can cause RHUC1 include W258*, E298D, L418R, R90H and G361V (Enomoto et al. 2002, Wakida et al. 2005, Ichida et al. 2008).

Literature References
PubMed ID Title Journal Year
18492088 Age and origin of the G774A mutation in SLC22A12 causing renal hypouricemia in Japanese

Ichida, K, Hosoyamada, M, Kamatani, N, Kamitsuji, S, Hisatome, I, Shibasaki, T, Hosoya, T

Clin. Genet. 2008
15634722 Mutations in human urate transporter 1 gene in presecretory reabsorption defect type of familial renal hypouricemia

Wakida, N, Tuyen, DG, Adachi, M, Miyoshi, T, Nonoguchi, H, Oka, T, Ueda, O, Tazawa, M, Kurihara, S, Yoneta, Y, Shimada, H, Oda, T, Kikuchi, Y, Matsuo, H, Hosoyamada, M, Endou, H, Otagiri, M, Tomita, K, Kitamura, K

J Clin Endocrinol Metab 2005
12024214 Molecular identification of a renal urate anion exchanger that regulates blood urate levels

Enomoto, A, Kimura, H, Chairoungdua, A, Shigeta, Y, Jutabha, P, Cha, SH, Hosoyamada, M, Takeda, M, Sekine, T, Igarashi, T, Matsuo, H, Kikuchi, Y, Oda, T, Ichida, K, Hosoya, T, Shimokata, K, Niwa, T, Kanai, Y, Endou, H

Nature 2002
Participants
Input
Participates
as an event of
Catalyst Activity

urate transmembrane transporter activity of SLC22A12 mutants [plasma membrane]

Physical Entity
SLC22A12 mutants [plasma membrane] (Homo sapiens)
Activity
urate transmembrane transporter activity (GO:0015143)
Normal reaction
SLC22A12 exchanges extracellular urate for cytosolic LACT (Homo sapiens)
Functional status

Loss of function of SLC22A12 mutants [plasma membrane]

Normal Entity
Disease Entity
Status
Disease
Authored
Jassal, B  (2014-10-03)
Reviewed
Broer, S  (2015-08-04)
Created
Jassal, B  (2014-10-03)
Cite Us!