FUNCTION: Multifunctional transporter with an impact in cell morphology and differentiation. In the presence of borate B(OH)4(-), acts as a voltage-dependent electrogenic Na(+)-coupled B(OH)4(-) cotransporter controlling boron homeostasis (PubMed:15525507). At early stages of stem cell differentiati...
FUNCTION: Multifunctional transporter with an impact in cell morphology and differentiation. In the presence of borate B(OH)4(-), acts as a voltage-dependent electrogenic Na(+)-coupled B(OH)4(-) cotransporter controlling boron homeostasis (PubMed:15525507). At early stages of stem cell differentiation, participates in synergy with ITGA5-ITGB1 and ITGAV-ITGB3 integrins and BMPR1A to promote cell adhesion and contractility that drives differentiation toward osteogenic commitment while inhibiting adipogenesis (By similarity). In the absence of B(OH)4(-), acts as a Na(+)-coupled OH(-) or H(+) permeable channel with implications in cellular redox balance (PubMed:15525507, PubMed:28642546). Regulates the oxidative stress response in corneal endothelium by enhancing antioxidant defenses and protecting cells from reactive oxygen species (PubMed:28642546). In response to hypo-osmotic challenge, also acts as water permeable channel at the basolateral cell membrane of corneal endothelial cells and facilitates transendothelial fluid reabsorption in the aqueous humor (PubMed:31273259, PubMed:25007886, PubMed:23813972). In the presence of ammonia, acts as an electrogenic NH3/H(+) cotransporter and may play a role in ammonia transport and reabsorption in renal Henle's loop epithelium (PubMed:27581649). {ECO:0000250|UniProtKB:A2AJN7, ECO:0000269|PubMed:15525507, ECO:0000269|PubMed:23813972, ECO:0000269|PubMed:25007886, ECO:0000269|PubMed:27581649, ECO:0000269|PubMed:28642546, ECO:0000269|PubMed:31273259}.
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GO - Biological processes (BP):
bicarbonate transport [GO:0015701]; borate transport [GO:0046713]; cellular cation homeostasis [GO:0030003]; cellular hypotonic response [GO:0071476]; cellular response to oxidative stress [GO:0034599]; fluid transport [GO:0042044]; ion homeostasis [GO:0050801]; proton transmembrane transport [GO:19...
bicarbonate transport [GO:0015701]; borate transport [GO:0046713]; cellular cation homeostasis [GO:0030003]; cellular hypotonic response [GO:0071476]; cellular response to oxidative stress [GO:0034599]; fluid transport [GO:0042044]; ion homeostasis [GO:0050801]; proton transmembrane transport [GO:1902600]; regulation of mesenchymal stem cell differentiation [GO:2000739]; regulation of mitochondrial membrane potential [GO:0051881]; sodium ion transport [GO:0006814]; transmembrane transport [GO:0055085]
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GO - Molecular function (MF):
active borate transmembrane transporter activity [GO:0046715]; anion:anion antiporter activity [GO:0015301]; bicarbonate transmembrane transporter activity [GO:0015106]; inorganic anion exchanger activity [GO:0005452]; protein dimerization activity [GO:0046983]; proton channel activity [GO:0015252];...
active borate transmembrane transporter activity [GO:0046715]; anion:anion antiporter activity [GO:0015301]; bicarbonate transmembrane transporter activity [GO:0015106]; inorganic anion exchanger activity [GO:0005452]; protein dimerization activity [GO:0046983]; proton channel activity [GO:0015252]; proton transmembrane transporter activity [GO:0015078]; sodium channel activity [GO:0005272]; symporter activity [GO:0015293]; transmembrane transporter activity [GO:0022857]; water transmembrane transporter activity [GO:0005372]
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GO - Cellular component (CC):
apical plasma membrane [GO:0016324]; basolateral plasma membrane [GO:0016323]; integral component of membrane [GO:0016021]; plasma membrane [GO:0005886]; vesicle membrane [GO:0012506]...
apical plasma membrane [GO:0016324]; basolateral plasma membrane [GO:0016323]; integral component of membrane [GO:0016021]; plasma membrane [GO:0005886]; vesicle membrane [GO:0012506]
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