PMID-sentid Pub_year Sent_text compound_name comp_offset prot_official_name organism prot_offset 11258959-2 2001 GSH binding to MGST1 as measured by thiolate anion formation, proton release, and Meisenheimer complex formation is a slow process that can be described by a rapid binding step (K(GSH)d = 47 +/- 7 mM) of the peptide followed by slow deprotonation (k2 = 0.42 +/- 0.03 s(-1). thiolate anion 36-50 microsomal glutathione S-transferase 1 Homo sapiens 15-20 11524005-1 2001 Most cytosolic glutathione S-transferases (GSTs) exploit a hydrogen bond between an active site Tyr and the bound glutathione (GSH) cofactor to lower the pK(a) of the GSH and generate the nucleophilic thiolate anion, GS(-). thiolate anion 201-215 glutathione S-transferase alpha 1 Homo sapiens 43-47 17914842-9 2007 These data indicate that the gas-phase addition of a phosphine to the disulfide moiety will most likely form a phosphonium cation-thiolate anion salt, in the presence of four or more water molecules, that provide sufficient H-bonding stabilization to allow displacement of the thiolate anion, a normal uncomplicated SN2 transition state is to be expected. thiolate anion 130-144 solute carrier family 38 member 5 Homo sapiens 316-319 12398152-8 2002 Under physiological conditions, thiyl radicals can react with thiolate anion yielding disulfide radical anion (RSSR)-* as an intermediate and finally disulfides and superoxide radical anion (O2-*), which is next inactivated in the reaction catalyzed by superoxide dismutase (SOD). thiolate anion 62-76 superoxide dismutase 1 Homo sapiens 253-273 12398152-8 2002 Under physiological conditions, thiyl radicals can react with thiolate anion yielding disulfide radical anion (RSSR)-* as an intermediate and finally disulfides and superoxide radical anion (O2-*), which is next inactivated in the reaction catalyzed by superoxide dismutase (SOD). thiolate anion 62-76 superoxide dismutase 1 Homo sapiens 275-278 10673221-7 2000 Also the Tyr-93 in LTC4 synthase has been suggested to function as a base for the formation of the thiolate anion of glutathione. thiolate anion 99-113 leukotriene C4 synthase Homo sapiens 19-32 10751412-1 2000 The glutathione S-transferase enzymes (GSTs) have a tyrosine or serine residue at their active site that hydrogen bonds to and stabilizes the thiolate anion of glutathione, GS(-). thiolate anion 142-156 glutathione S-transferase alpha 2 Rattus norvegicus 39-43 9261869-5 1997 The functional implications of Tyr7 in the activation of the glutathione thiol group are discussed in the light of present results, which in agreement with previous studies suggest that Tyr7 in un-ionized form contributes to the catalytic process of glutathione S-transferase, the thiolate anion being stabilized by hydrogen bond with Tyr7 and by interactions with hydrating water molecules. thiolate anion 281-295 glutathione S-transferase kappa 1 Homo sapiens 250-275 10384960-5 1999 The capability of the thiols to overcome their own inhibitory effect on CB was dependent on the concentration of their thiolate anion (RS-). thiolate anion 119-133 cathepsin B Homo sapiens 72-74 9153254-9 1997 These results suggest that in the catalytic function of LTC4S, Arg-51 probably opens the epoxide ring and Tyr-93 provides the thiolate anion of GSH. thiolate anion 126-140 leukotriene C4 synthase Homo sapiens 56-61 6098577-10 1984 Comparison of the EPR signal of oxidized H-450 with those of a cytochrome P-450, P-450(PB-1), and several model compounds indicated the presence of a thiolate anion at the 5th coordination position of the heme of H-450. thiolate anion 150-164 cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus 63-79 8931546-4 1996 This thiolate anion is stabilized by 5.7 kcal/mol in the dithiol form, giving rise to the corresponding instability of the disulfide bond and the oxidizing properties of PDI a. thiolate anion 5-19 prolyl 4-hydroxylase subunit beta Homo sapiens 170-175 1761059-6 1991 Dimerization of fibronectin took place most effectively at pH greater than or equal to 8.8 but decreased strongly at lower pH, representing more unfavourable conditions for the action of the thiolate anion in the thiol/disulfide exchange reaction. thiolate anion 191-205 fibronectin 1 Homo sapiens 16-27 2917017-3 1989 This spectrum indicates an interaction with the thiolate anion at cytochrome P-450; it can be blocked by previous addition of dithioerythritol. thiolate anion 48-62 cytochrome P450, family 2, subfamily g, polypeptide 1 Rattus norvegicus 66-82 3044690-14 1988 While the active-site histidine of lipoamide dehydrogenase stabilizes the thiolate anion intermediate and relays a proton in the catalytic process. thiolate anion 74-88 dihydrolipoamide dehydrogenase Homo sapiens 35-58 6098577-10 1984 Comparison of the EPR signal of oxidized H-450 with those of a cytochrome P-450, P-450(PB-1), and several model compounds indicated the presence of a thiolate anion at the 5th coordination position of the heme of H-450. thiolate anion 150-164 cytochrome P450, family 2, subfamily C, polypeptide 6, variant 1 Rattus norvegicus 81-91 2742854-0 1989 Spectroscopic and kinetic evidence for the thiolate anion of glutathione at the active site of glutathione S-transferase. thiolate anion 43-57 hematopoietic prostaglandin D synthase Rattus norvegicus 95-120 2742854-1 1989 Ultraviolet difference spectroscopy of the binary complex of isozyme 4-4 of rat liver glutathione S-transferase with glutathione (GSH) and the enzyme alone or as the binary complex with the oxygen analogue, gamma-L-glutamyl-L-serylglycine (GOH), at neutral pH reveals an absorption band at 239 nm (epsilon = 5200 M-1 cm-1) that is assigned to the thiolate anion (GS-) of the bound tripeptide. thiolate anion 347-361 hematopoietic prostaglandin D synthase Rattus norvegicus 86-111 26755582-2 2016 Recently, a high-resolution crystal structure of human mPGES-1 was presented, with Ser-127 being proposed as the hydrogen-bond donor stabilizing thiolate anion formation within the cofactor, glutathione (GSH). thiolate anion 145-159 prostaglandin E synthase Mus musculus 55-62 681358-10 1978 The products of the model reaction and the covalently bound FAD of lipoamide dehydrogenase appear to be the result of a nucleophilic attack on the carbon at position 8 of the flavin ring by a thiolate anion, displacing the chloride. thiolate anion 192-206 dihydrolipoamide dehydrogenase Homo sapiens 67-90 7061465-2 1982 Evidence of several types has accumulated that cytochrome P-450 has a thiolate anion as one of the axial ligands to heme (the fifth ligand). thiolate anion 70-84 cytochrome P-450 Oryctolagus cuniculus 47-63 7295776-2 1981 Reduced P-450SCC at pH 7.4 exhibited the V4 line at 1342 cm-1, which is an unusually low frequency compared with an ordinary protohemoprotein but is common to the family of cytochrome P-450, suggesting the coordination of a strong pi-donor such as thiolate anion at the fifth coordination position of the heme iron. thiolate anion 248-262 cytochrome P450 family 11 subfamily A member 1 Homo sapiens 8-16 7295776-2 1981 Reduced P-450SCC at pH 7.4 exhibited the V4 line at 1342 cm-1, which is an unusually low frequency compared with an ordinary protohemoprotein but is common to the family of cytochrome P-450, suggesting the coordination of a strong pi-donor such as thiolate anion at the fifth coordination position of the heme iron. thiolate anion 248-262 cytochrome P450 family 4 subfamily F member 3 Homo sapiens 173-189 31590044-3 2020 The selenenyl anion of selenocysteine (Sec) is a stronger nucleophile, more prevalent at physiological pH, and more reactive than the corresponding thiolate anion of Cys. thiolate anion 148-162 eukaryotic elongation factor, selenocysteine-tRNA-specific Mus musculus 39-42 29390175-5 2018 The formation of a two-sulfur three-electron bonded disulfide radical anion (DRA) species by the reaction of a thiyl radical with a thiolate anion was determined as the cause for the reduction in catalytic radicals and the TEC rate. thiolate anion 132-146 solute carrier family 26 member 3 Homo sapiens 77-80 19646993-5 2009 The enzymatic properties of MsrA indeed rely on the activation of the catalytic cysteine to the thiolate anion form that is potentially susceptible to oxidation by hydrogen peroxide. thiolate anion 96-110 methionine sulfoxide reductase A Homo sapiens 28-32 22219129-4 2012 Our data suggest that under normal circumstance, cysteine 111 residue in SOD1 is free; however, under oxidative stress, it is prone to oxidative modification by providing the thiolate anion (S-). thiolate anion 175-189 superoxide dismutase 1 Homo sapiens 73-77 24338014-5 2014 From the crystal structure of plasminogen, we propose that plasmin ligands such as phosphoglycerate kinase induce a conformational change in reduced kringle 5 that leads to attack by the Cys(541) thiolate anion on the Cys(536) sulfur atom of the Cys(512)-Cys(536) disulfide bond, resulting in reduction of the bond by thiol/disulfide exchange. thiolate anion 196-210 plasminogen Homo sapiens 30-37 22217203-0 2012 Pre-steady-state kinetic characterization of thiolate anion formation in human leukotriene C4 synthase. thiolate anion 45-59 leukotriene C4 synthase Homo sapiens 79-102 22217203-8 2012 Taken together, these data establish that thiolate anion formation in hLTC4S is not the rate-limiting step for the overall reaction of LTC4 production (k(cat) = 26 s-1), and compared to the related microsomal glutathione transferase 1, which displays very slow GSH thiolate anion formation and one-third of the sites reactivity, hLTC4S has evolved a different catalytic mechanism. thiolate anion 42-56 leukotriene C4 synthase Homo sapiens 70-76 19658411-5 2009 The nu(Fe-CO) and nu(C-O) data reveal that the proximal heme ligand of iNOS(P420) is consistent with a protonated thiol instead of a thiolate anion. thiolate anion 133-147 nitric oxide synthase 2 Homo sapiens 71-75