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HighlightsIntroduction of SLC4A8
SLC4A8 (solute carrier family 4, member 8), also known as NDCBE, is a sodium-driven chloride/bicarbonate exchanger. It is a member of the solute carrier 4 (SLC4) family of HCO3- transporters that contain products of 11 genes with similar sequences. Most SLC4 members play important roles in regulating intracellular pH. SLC4A8 is highly expressed in all major regions of the brain, spinal column and in testis, with moderate levels in trachea, thyroid and medulla region of kidney, as well as low levels in pancreas and kidney cortex.
| Basic Information of SLC4A8 | |
| Protein Name | Electroneutral sodium bicarbonate exchanger 1 |
| Gene Name | SLC4A8 |
| Aliases | NBC3, NDCBE |
| Organism | Homo sapiens (Human) |
| UniProt ID | Q2Y0W8 |
| Transmembrane Times | 11 |
| Length (aa) | 1093 |
| Sequence | MPAAGSNEPDGVLSYQRPDEEAVVDQGGTSTILNIHYEKEELEGHRTLYVGVRMPLGRQSHRHHRTHGQKHRRRGRGKGASQGEEGLEALAHDTPSQRVQFILGTEEDEEHVPHELFTELDEICMKEGEDAEWKETARWLKFEEDVEDGGERWSKPYVATLSLHSLFELRSCLINGTVLLDMHANSIEEISDLILDQQELSSDLNDSMRVKVREALLKKHHHQNEKKRNNLIPIVRSFAEVGKKQSDPHLMDKHGQTVSPQSVPTTNLEVKNGVNCEHSPVDLSKVDLHFMKKIPTGAEASNVLVGEVDILDRPIVAFVRLSPAVLLSGLTEVPIPTRFLFILLGPVGKGQQYHEIGRSMATIMTDEIFHDVAYKAKERDDLLAGIDEFLDQVTVLPPGEWDPSIRIEPPKNVPSQEKRKMPGVPNGNVCHIEQEPHGGHSGPELQRTGRLFGGLVLDIKRKAPWYWSDYRDALSLQCLASFLFLYCACMSPVITFGGLLGEATEGRISAIESLFGASMTGIAYSLFAGQALTILGSTGPVLVFEKILFKFCKDYALSYLSLRACIGLWTAFLCIVLVATDASSLVCYITRFTEEAFASLICIIFIYEAIEKLIHLAETYPIHMHSQLDHLSLYYCRCTLPENPNNHTLQYWKDHNIVTAEVHWANLTVSECQEMHGEFMGSACGHHGPYTPDVLFWSCILFFTTFILSSTLKTFKTSRYFPTRVRSMVSDFAVFLTIFTMVIIDFLIGVPSPKLQVPSVFKPTRDDRGWIINPIGPNPWWTVIAAIIPALLCTILIFMDQQITAVIINRKEHKLKKGCGYHLDLLMVAIMLGVCSIMGLPWFVAATVLSITHVNSLKLESECSAPGEQPKFLGIREQRVTGLMIFVLMGCSVFMTAILKFIPMPVLYGVFLYMGVSSLQGIQFFDRLKLFGMPAKHQPDFIYLRHVPLRKVHLFTLIQLTCLVLLWVIKASPAAIVFPMMVLALVFVRKVMDLCFSKRELSWLDDLMPESKKKKLDDAKKKAKEEEEAEKMLEIGGDKFPLESRKLLSSPGKNISCRCDPSEINISDEMPKTTVWKALSMNSGNAKEKSLFN |
Function of SLC4A8 Membrane Protein
SLC4A8 (NDCBE) is a sodium-driven chloride/bicarbonate exchanger that mediates the uptake of 1 Na+ and 2 HCO3- in exchange for 1 Cl-. It plays an important role in cell pH regulation by transporting HCO3- from blood to cell. And the increased expression of SLC4A8 in severe acid stress could be important for cell survival by mediating the influx of HCO3- into the cells. It has been found that the high levels of SLC4A8 are focused in multiple CNS neurons including the cerebral cortex, substantial nigra, medulla, cerebellum, and the basolateral membrane of fetal choroid plexus where it contributes to pH(i) regulation. Moreover, SLC4A8 is found to predominantly localize to presynaptic nerve endings where it functions as a key regulator of presynaptic pH involved in synaptic glutamate release and neuronal activity regulation. In addition, SLC4A8 also exerts a role in the regulation of electroneutral Na+ reabsorption process in the renal cortical collecting ducts of mice, suggesting a role for the transporter in the mediation of fluid homeostasis in mice.
Fig.1 Phylogenetic tree of SLC4 family. (Ying, 2015)
Application of SLC4A8 Membrane Protein in Literature
The article indicates that Slc4a8 is involved in the regulation of synaptic glutamate release in a pH-dependent manner.
The experimental results support that SLC4A8 plays a role in the regulation of substantial Na+ reabsorption in the renal cortical collecting ducts of mice.
In this study, authors identify that the Na(+)-driven Cl/HCO(3) exchanger NDCBE is upregulated by chronic acid loads in a cell-specific manner.
By means of immunocytochemistry, authors detect the high NDCBE levels in multiple CNS neurons including the cerebral cortex, substantial nigra, medulla, cerebellum, and the basolateral membrane of fetal choroid plexus. Thus, it is proposed that NDCBE is responsible for pH(i) regulation in multiple CNS neurons.
The study demonstrates that NDCBE is involved in the regulation of glutamatergic transmission throughout the brain. Besides, it also plays a potential role in regulation of γ-aminobutyric acid (GABA)ergic neurotransmission.
SLC4A8 Preparation Options
Based on the versatile Magic™ membrane protein production platform, Creative Biolabs can help you to obtain the best soluble and functional target protein to make your project a success. Aided by our versatile Magic™ anti-membrane protein antibody discovery platform, we also provide customized anti-SLC4A8 antibody development services.
As a forward-looking biotech company as well as a leading custom service provider in the field of membrane protein, Creative Biolabs has won good reputation among our worldwide customers for successfully accomplishing numerous challenging projects including generation of many functional membrane proteins. Please feel free to contact us for more information.
Reference
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