SLC47A2
Solute carrier family 47, member 2, also known as SLC47A2, is a protein which in humans is encoded by the SLC47A2 gene.[3]
Function
This gene encodes a protein belonging to a family of transporters involved in excretion of toxic electrolytes, both endogenous and exogenous, through urine and bile. This transporter family shares homology with the bacterial MATE (multi antimicrobial extrusion protein or multidrug and toxic compound extrusion) protein family responsible for drug resistance.[4] This gene is one of two members of the MATE transporter family located near each other on chromosome 17. Alternatively spliced transcript variants encoding different isoforms have been identified for this gene.[3]
Discovery
The multidrug efflux transporter NorM from V. parahaemolyticus which mediates resistance to multiple antimicrobial agents (norfloxacin, kanamycin, ethidium bromide etc.) and its homologue from E. coli were identified in 1998.[4] NorM seems to function as drug/sodium antiporter which is the first example of Na+-coupled multidrug efflux transporter discovered.[5] NorM is a prototype of a new transporter family and Brown et al. named it the multidrug and toxic compound extrusion family.[6] The X-ray structure of the NorM was determined to 3.65 Å, revealing an outward-facing conformation with two portals open to the outer leaflet of the membrane and a unique topology of the predicted 12 transmembrane helices distinct from any other known multidrug resistance transporter.[7]
References
Further reading
- Tanihara Y, Masuda S, Sato T, et al. (2007). "Substrate specificity of MATE1 and MATE2-K, human multidrug and toxin extrusions/H(+)-organic cation antiporters". Biochem. Pharmacol. 74 (2): 359–71. doi:10.1016/j.bcp.2007.04.010. PMID 17509534.
- Omote H, Hiasa M, Matsumoto T, et al. (2007). "The MATE proteins as fundamental transporters of metabolic and xenobiotic organic cations". Trends Pharmacol. Sci. 27 (11): 587–93. doi:10.1016/j.tips.2006.09.001. PMID 16996621.
- Masuda S, Terada T, Yonezawa A, et al. (2006). "Identification and functional characterization of a new human kidney-specific H+/organic cation antiporter, kidney-specific multidrug and toxin extrusion 2". J. Am. Soc. Nephrol. 17 (8): 2127–35. doi:10.1681/ASN.2006030205. PMID 16807400.
- Otsuka M, Matsumoto T, Morimoto R, et al. (2006). "A human transporter protein that mediates the final excretion step for toxic organic cations". Proc. Natl. Acad. Sci. U.S.A. 102 (50): 17923–8. doi:10.1073/pnas.0506483102. PMC 1312386. PMID 16330770.
- Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
- Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
- Venter JC, Adams MD, Myers EW, et al. (2001). "The sequence of the human genome". Science. 291 (5507): 1304–51. doi:10.1126/science.1058040. PMID 11181995.
- Bonaldo MF; Lennon G; Soares MB (1997). "Normalization and subtraction: two approaches to facilitate gene discovery". Genome Res. 6 (9): 791–806. doi:10.1101/gr.6.9.791. PMID 8889548.
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- proton coupled metal ion transporter
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- human Na+-sulfate/carboxylate cotransporter
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- proton oligopeptide cotransporter
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- monocarboxylate transporter
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- Na+-dependent ascorbic acid transporter
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- multifunctional anion exchanger
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- Na+-coupled nucleoside transport (SLC28A1
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- facilitative nucleoside transporter
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- type II Na+-phosphate cotransporter
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- nucleoside-sugar transporter
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- SLC35E1
- SLC35E2
- SLC35E3
- SLC35E4
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- proton-coupled amino-acid transporter
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- sugar-phosphate/phosphate exchanger
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- System A & N, sodium-coupled neutral amino-acid transporter
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- basolateral iron transporter
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- Na+-independent, system-L like amino-acid transporter
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- Putative sugar transporter
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see also solute carrier disorders |