1.0 2016-09-30 22:27:25 UTC 2020-06-04 20:32:44 UTC BMDB0000251 BMDB00251 Taurine Taurine, also known as taufon or 2-sulfoethylamine, belongs to the class of organic compounds known as organosulfonic acids. Organosulfonic acids are compounds containing the sulfonic acid group, which has the general structure RS(=O)2OH (R is not a hydrogen atom). Taurine exists as a solid, possibly soluble (in water), and a very strong basic compound (based on its pKa) molecule. Taurine exists in all living species, ranging from bacteria to humans. Taurine is a potentially toxic compound. Taurine has been found to be associated with several diseases known as perillyl alcohol administration for cancer treatment, schizophrenia, irritable bowel syndrome, and sulfite oxidase deficiency, isolated; also taurine has been linked to the inborn metabolic disorders including maple syrup urine disease. 2-Aminoethanesulfonic acid 2-Aminoethyl sulfonate Aminoethylsulfonic acid beta-Aminoethylsulfonic acid 2-Aminoethanesulfonate 2-Aminoethanesulphonate 2-Aminoethanesulphonic acid 2-Aminoethyl sulfonic acid 2-Aminoethyl sulphonate 2-Aminoethyl sulphonic acid Aminoethylsulfonate Aminoethylsulphonate Aminoethylsulphonic acid b-Aminoethylsulfonate b-Aminoethylsulfonic acid b-Aminoethylsulphonate b-Aminoethylsulphonic acid beta-Aminoethylsulfonate beta-Aminoethylsulphonate beta-Aminoethylsulphonic acid Β-aminoethylsulfonate Β-aminoethylsulfonic acid Β-aminoethylsulphonate Β-aminoethylsulphonic acid 1-Aminoethane-2-sulfonate 1-Aminoethane-2-sulfonic acid 2-Aminoethylsulfonate 2-Aminoethylsulfonic acid 2-Sulfoethylamine Taurine hydrochloride Taurine zinc salt (2:1) Taurine, monopotassium salt Taufon Tauphon C2H7NO3S 125.147 125.014663785 2-aminoethane-1-sulfonic acid taurine 107-35-7 NCCS(O)(=O)=O InChI=1S/C2H7NO3S/c3-1-2-7(4,5)6/h1-3H2,(H,4,5,6) XOAAWQZATWQOTB-UHFFFAOYSA-N belongs to the class of organic compounds known as organosulfonic acids. Organosulfonic acids are compounds containing the sulfonic acid group, which has the general structure RS(=O)2OH (R is not a hydrogen atom). Organic compounds Organic acids and derivatives Organic sulfonic acids and derivatives Organosulfonic acids and derivatives Organosulfonic acids Alkanesulfonic acids Hydrocarbon derivatives Monoalkylamines Organic oxides Organopnictogen compounds Sulfonyls Aliphatic acyclic compound Alkanesulfonic acid Amine Hydrocarbon derivative Organic nitrogen compound Organic oxide Organic oxygen compound Organonitrogen compound Organopnictogen compound Organosulfonic acid Organosulfur compound Primary aliphatic amine Primary amine Sulfonyl Aliphatic acyclic compounds amino sulfonic acid Solid melting_point 300 °C water_solubility 80.7 mg/mL logp -2.19 ALOGPS logs -0.08 ALOGPS logp -2.6 ChemAxon pka_strongest_acidic -1.5 ChemAxon pka_strongest_basic 9.34 ChemAxon iupac 2-aminoethane-1-sulfonic acid ChemAxon average_mass 125.147 ChemAxon mono_mass 125.014663785 ChemAxon smiles NCCS(O)(=O)=O ChemAxon formula C2H7NO3S ChemAxon inchi InChI=1S/C2H7NO3S/c3-1-2-7(4,5)6/h1-3H2,(H,4,5,6) ChemAxon inchikey XOAAWQZATWQOTB-UHFFFAOYSA-N ChemAxon polar_surface_area 80.39 ChemAxon refractivity 24.61 ChemAxon polarizability 10.82 ChemAxon rotatable_bond_count 2 ChemAxon acceptor_count 4 ChemAxon donor_count 2 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon number_of_rings 0 ChemAxon bioavailability 1 ChemAxon rule_of_five Yes ChemAxon ghose_filter Yes ChemAxon veber_rule Yes ChemAxon mddr_like_rule Yes ChemAxon Bile Acid Biosynthesis SMP0087236 Taurine and Hypotaurine Metabolism SMP0087214 Specdb::MsMs 430 Specdb::MsMs 431 Specdb::MsMs 432 Specdb::MsMs 3742 Specdb::MsMs 3743 Specdb::MsMs 3744 Specdb::MsMs 3745 Specdb::MsMs 3746 Specdb::MsMs 3747 Specdb::MsMs 3748 Specdb::MsMs 3749 Specdb::MsMs 3750 Specdb::MsMs 3751 Specdb::MsMs 3752 Specdb::MsMs 3753 Specdb::MsMs 3754 Specdb::MsMs 3755 Specdb::MsMs 3756 Specdb::MsMs 3757 Specdb::MsMs 3758 Specdb::MsMs 3759 Specdb::MsMs 3760 Specdb::MsMs 3761 Specdb::MsMs 3762 Specdb::MsMs 3763 Specdb::NmrTwoD 1007 Specdb::NmrTwoD 1238 Specdb::MsIr 352 Specdb::MsIr 353 Specdb::MsIr 354 Specdb::CMs 487 Specdb::CMs 488 Specdb::CMs 489 Specdb::CMs 2519 Specdb::CMs 30234 Specdb::CMs 30698 Specdb::CMs 30763 Specdb::CMs 32381 Specdb::CMs 32383 Specdb::CMs 166328 Specdb::EiMs 1313 Specdb::NmrOneD 1218 Specdb::NmrOneD 1277 Specdb::NmrOneD 2107 Specdb::NmrOneD 4964 Specdb::NmrOneD 6272 Specdb::NmrOneD 6273 Specdb::NmrOneD 6274 Specdb::NmrOneD 6275 Specdb::NmrOneD 6276 Specdb::NmrOneD 6277 Specdb::NmrOneD 6278 Specdb::NmrOneD 6279 Specdb::NmrOneD 6280 Specdb::NmrOneD 6281 Specdb::NmrOneD 6282 Specdb::NmrOneD 6283 Specdb::NmrOneD 6284 Specdb::NmrOneD 6285 Specdb::NmrOneD 6286 Specdb::NmrOneD 6287 Specdb::NmrOneD 6288 Specdb::NmrOneD 6289 Specdb::NmrOneD 6290 Specdb::NmrOneD 6291 Specdb::NmrOneD 166456 Blood 80 +/- 20 uM By LC-MS/MS & NMR Aidin Foroutan, Carolyn Fitzsimmons, Rupasri Mandal, Hamed Piri‐Moghadam, Jiamin Zheng, AnChi Guo, Carin Li, Le Luo Guan and David S. Wishart. The Bovine Metabolome. Metabolites 2020, 10, 233; doi:10.3390/metabo10060233 Blood Detected by NMR De Buck J, Shaykhutdinov R, Barkema HW, Vogel HJ: Metabolomic profiling in cattle experimentally infected with Mycobacterium avium subsp. paratuberculosis. PLoS One. 2014 Nov 5;9(11):e111872. doi: 10.1371/journal.pone.0111872. eCollection 2014. 25372282 Blood 33-41 uM Ion exchange chromatography with fluorometric detection Greenwood RH, Titgemeyer EC, Stokka GL, Drouillard JS, Loest CA: Effects of L-carnitine on nitrogen retention and blood metabolites of growing steers and performance of finishing steers. J Anim Sci. 2001 Jan;79(1):254-60. doi: 10.2527/2001.791254x. 11204708 Blood 33-47 uM By HPLC Zhou Z, Vailati-Riboni M, Luchini DN, Loor JJ: Methionine and Choline Supply during the Periparturient Period Alter Plasma Amino Acid and One-Carbon Metabolism Profiles to Various Extents: Potential Role in Hepatic Metabolism and Antioxidant Status. Nutrients. 2016 Dec 29;9(1). pii: nu9010010. doi: 10.3390/nu9010010. 28036059 Brain Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Epidermis Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Erythrocyte Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Fibroblasts Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Intestine Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Kidney Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Leukocyte Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Liver 2243 +/- 1186 nmol/g of tissue By LC-MS/MS & NMR Aidin Foroutan, Carolyn Fitzsimmons, Rupasri Mandal, Hamed Piri‐Moghadam, Jiamin Zheng, AnChi Guo, Carin Li, Le Luo Guan and David S. Wishart. The Bovine Metabolome. Metabolites 2020, 10, 233; doi:10.3390/metabo10060233 Liver Metabolomics analysis was performed using GC-MS/LC-MS in multiparous Holstein dairy cows Shahzad K, Lopreiato V, Liang Y, Trevisi E, Osorio JS, Xu C, Loor JJ: Hepatic metabolomics and transcriptomics to study susceptibility to ketosis in response to prepartal nutritional management. J Anim Sci Biotechnol. 2019 Dec 18;10:96. doi: 10.1186/s40104-019-0404-z. eCollection 2019. 31867104 Longissimus Thoracis Muscle 480 +/- 146 nmol/g of tissue By LC-MS/MS & NMR Aidin Foroutan, Carolyn Fitzsimmons, Rupasri Mandal, Hamed Piri‐Moghadam, Jiamin Zheng, AnChi Guo, Carin Li, Le Luo Guan and David S. Wishart. The Bovine Metabolome. Metabolites 2020, 10, 233; doi:10.3390/metabo10060233 Mammary Gland 8 multiparous Chinese Holstein dairy cows fed in the Hangzhou Hangjiang Dairy Farm based on the milk production under corn stover based diets. Detection used gas chromatography time-of-flight/mass spectrometry (GC-TOF/MS) platform. Sun HZ, Zhou M, Wang O, Chen Y, Liu JX, Guan LL: Multi-omics reveals functional genomic and metabolic mechanisms of milk production and quality in dairy cows. Bioinformatics. 2020 Apr 15;36(8):2530-2537. doi: 10.1093/bioinformatics/btz951. 31873721 Mammary Gland 8 multiparous Chinese Holstein dairy cows fed in the Hangzhou Hangjiang Dairy Farm based on the milk production under alfalfa hay based diets. Detection used gas chromatography time-of-flight/mass spectrometry (GC-TOF/MS) platform. Sun HZ, Zhou M, Wang O, Chen Y, Liu JX, Guan LL: Multi-omics reveals functional genomic and metabolic mechanisms of milk production and quality in dairy cows. Bioinformatics. 2020 Apr 15;36(8):2530-2537. doi: 10.1093/bioinformatics/btz951. 31873721 Milk 10 - 30 uM Whole milk NRC. 1989. Recommended Dietary Allowances. 10th ed. Natl. Acad. Press, Washington, DC. Milk 327 - 621 uM Klein MS, Almstetter MF, Schlamberger G, Nurnberger N, Dettmer K, Oefner PJ, Meyer HH, Wiedemann S, Gronwald W: Nuclear magnetic resonance and mass spectrometry-based milk metabolomics in dairy cows during early and late lactation. J Dairy Sci. 2010 Apr;93(4):1539-50. doi: 10.3168/jds.2009-2563. 20338431 Milk 37 +/- 2 uM Commercial 1% milk by LC-HRMS Foroutan A, Guo AC, Vazquez-Fresno R, Lipfert M, Zhang L, Zheng J, Badran H, Budinski Z, Mandal R, Ametaj BN, Wishart DS: Chemical Composition of Commercial Cow's Milk. J Agric Food Chem. 2019 Apr 17. doi: 10.1021/acs.jafc.9b00204. 30994344 Milk 41 +/- 2 uM Commercial 2% milk by LC-HRMS Foroutan A, Guo AC, Vazquez-Fresno R, Lipfert M, Zhang L, Zheng J, Badran H, Budinski Z, Mandal R, Ametaj BN, Wishart DS: Chemical Composition of Commercial Cow's Milk. J Agric Food Chem. 2019 Apr 17. doi: 10.1021/acs.jafc.9b00204. 30994344 Milk 38 +/- 2 uM Commercial 3.25% milk by LC-HRMS Foroutan A, Guo AC, Vazquez-Fresno R, Lipfert M, Zhang L, Zheng J, Badran H, Budinski Z, Mandal R, Ametaj BN, Wishart DS: Chemical Composition of Commercial Cow's Milk. J Agric Food Chem. 2019 Apr 17. doi: 10.1021/acs.jafc.9b00204. 30994344 Milk 37 +/- 2 uM Commercial skim milk by LC-HRMS Foroutan A, Guo AC, Vazquez-Fresno R, Lipfert M, Zhang L, Zheng J, Badran H, Budinski Z, Mandal R, Ametaj BN, Wishart DS: Chemical Composition of Commercial Cow's Milk. J Agric Food Chem. 2019 Apr 17. doi: 10.1021/acs.jafc.9b00204. 30994344 Neuron Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Pancreas Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Placenta Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Platelet Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Prostate Tissue Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Retina Wishart DS, Feunang YD, Marcu A, Guo AC, Liang K, Vazquez-Fresno R, Sajed T, Johnson D, Li C, Karu N, Sayeeda Z, Lo E, Assempour N, Berjanskii M, Singhal S, Arndt D, Liang Y, Badran H, Grant J, Serra-Cayuela A, Liu Y, Mandal R, Neveu V, Pon A, Knox C, Wilson M, Manach C, Scalbert A: HMDB 4.0: the human metabolome database for 2018. Nucleic Acids Res. 2018 Jan 4;46(D1):D608-D617. doi: 10.1093/nar/gkx1089. 29140435 Ruminal Fluid 8 +/- 7 uM By LC-MS/MS & NMR Aidin Foroutan, Carolyn Fitzsimmons, Rupasri Mandal, Hamed Piri‐Moghadam, Jiamin Zheng, AnChi Guo, Carin Li, Le Luo Guan and David S. Wishart. The Bovine Metabolome. Metabolites 2020, 10, 233; doi:10.3390/metabo10060233 Ruminal Fluid 1.07 +/- 0.007 uM Samples have been collected from 8 healthy primiparous Holstein cow, no barley grains in diet. Metabolite measured DFI-MS/MS. Fozia Saleem, Souhaila Bouatra, An Chi Guo, Nikolaos Psychogios, Rupasri Mandal, Suzanna M. Dunn, Burim N. Ametaj, David S. Wishart. The Bovine Ruminal Fluid Metabolome. Metabolomics (2013) 9:360–378. Ruminal Fluid 36.2 +/- 0.01 uM Fozia Saleem, Souhaila Bouatra, An Chi Guo, Nikolaos Psychogios, Rupasri Mandal, Suzanna M. Dunn, Burim N. Ametaj, David S. Wishart. The Bovine Ruminal Fluid Metabolome. Metabolomics (2013) 9:360–378. Semimembranosus Muscle 844 +/- 301 nmol/g of tissue By LC-MS/MS & NMR Aidin Foroutan, Carolyn Fitzsimmons, Rupasri Mandal, Hamed Piri‐Moghadam, Jiamin Zheng, AnChi Guo, Carin Li, Le Luo Guan and David S. Wishart. The Bovine Metabolome. Metabolites 2020, 10, 233; doi:10.3390/metabo10060233 Testis 1510 +/- 296 nmol/g of tissue By LC-MS/MS & NMR Aidin Foroutan, Carolyn Fitzsimmons, Rupasri Mandal, Hamed Piri‐Moghadam, Jiamin Zheng, AnChi Guo, Carin Li, Le Luo Guan and David S. Wishart. The Bovine Metabolome. Metabolites 2020, 10, 233; doi:10.3390/metabo10060233 1091 DB01956 FDB003191 C00245 15891 1123 TAURINE C00048188 Taurine 34373 31 Hu, Libo; Zhu, Hui; Du, Da-Ming; Xu, Jiaxi. Efficient synthesis of taurine and structurally diverse substituted taurines from aziridines. Journal of Organic Chemistry (2007), 72(12), 4543-4546. Klein MS, Almstetter MF, Schlamberger G, Nurnberger N, Dettmer K, Oefner PJ, Meyer HH, Wiedemann S, Gronwald W: Nuclear magnetic resonance and mass spectrometry-based milk metabolomics in dairy cows during early and late lactation. J Dairy Sci. 2010 Apr;93(4):1539-50. doi: 10.3168/jds.2009-2563. 20338431 Mung D, Li L: Development of Chemical Isotope Labeling LC-MS for Milk Metabolomics: Comprehensive and Quantitative Profiling of the Amine/Phenol Submetabolome. Anal Chem. 2017 Apr 18;89(8):4435-4443. doi: 10.1021/acs.analchem.6b03737. Epub 2017 Mar 28. 28306241 Mung D, Li L: Applying quantitative metabolomics based on chemical isotope labeling LC-MS for detecting potential milk adulterant in human milk. Anal Chim Acta. 2018 Feb 25;1001:78-85. doi: 10.1016/j.aca.2017.11.019. Epub 2017 Nov 14. 29291809 NRC. 1989. Recommended Dietary Allowances. 10th ed. Natl. Acad. Press, Washington, DC. A. Foroutan et al. The Chemical Composition of Commercial Cow's Milk (in preparation) BMDBP00862 Glutamate decarboxylase 1 Q0VCA1 GAD1 Enzyme BMDBP01376 Acidic amino acid decarboxylase GADL1 A6QM00 GADL1 Enzyme BMDBP01848 Glycine receptor subunit alpha-1 P57695 GLRA1 Enzyme BMDBP02539 Sodium- and chloride-dependent taurine transporter Q9MZ34 SLC6A6 Enzyme BMDBP02851 Glutathione hydrolase 6 A7YWM1 GGT6 Enzyme