在二铜(I,I)中心实现了硫醇的氧化还原中性S-亚硝化。用过量的 NO 处理二铜 (I,I) 络合物。和硫醇生成二铜(I,I) 二-S-亚硝基硫醇复合物 [Cu I Cu I (RSNO) 2 ] 2+或二铜(I,I) 单- S-亚硝基硫醇复合物 [Cu I Cu I (RSNO)] 2+,它很容易以 88-94% 的产率释放 RSNO。所述š -nitrosation前进通过混合价物[Cu II的Cu III(μ-O)(μ-NO)] 2+物种,在基本 μ-O 位点使 RS-H 去质子化,在 μ-NO 位点使RS -亚硝化。[Cu II Cu III (μ-O)(μ-NO)] 2+络合物也能胜任MeOH 的O-亚硝化。一种罕见的 [Cu II Cu II (μ-NO)(OMe)] 2+中间体被分离并完全表征,表明S -亚硝化可能通过类似 [Cu II Cu II (μ-NO)(SR)的中间体进行]
Harnessing Redox Cross-Reactivity To Profile Distinct Cysteine Modifications
作者:Jaimeen D. Majmudar、Aaron M. Konopko、Kristin J. Labby、Christopher T. M. B. Tom、John E. Crellin、Ashesh Prakash、Brent R. Martin
DOI:10.1021/jacs.5b06806
日期:2016.2.17
endogenous S-sulfinated proteins, confirming that a single sulfinic acid can react with a nitrosothiol to form a thiosulfonate linkage. Using this approach, we find that hydrogenperoxide addition increases S-sulfination of human DJ-1 (PARK7) at Cys106, whereas Cys46 and Cys53 are fully oxidized to sulfonic acids. Comparative gel-based analysis of different mouse tissues reveals distinct profiles for both
Compositions and methods for detecting S-nitrosylation and S-sulfinylation
申请人:The Regents of the University of Michigan
公开号:US10408843B2
公开(公告)日:2019-09-10
The present invention relates to methods for detecting protein S-sulfinylation and S-sulfinylation within thiol groups in proteins, metabolites, or materials.
Comparison of Reductive Ligation‐Based Detection Strategies for Nitroxyl (HNO) and
<i>S</i>
‐Nitrosothiols
作者:Zhengrui Miao、S. Bruce King
DOI:10.1002/open.201500200
日期:2016.4
carboxylic acid groups primarily yield phosphine oxides suggesting these groups facilitate nonligation pathways such as hydrolysis. The fluorescence response of a phosphine‐based fluorophore toward the same RSNO confirms these differences and indicates that these probes selectively react with HNO. Flow cytometry experiments in HeLa cells reinforce the reactivity difference and offer a potential fast screening
COMPOSITIONS AND METHODS FOR DETECTING S-NITROSYLATION AND S-SULFINYLATION
申请人:THE REGENTS OF THE UNIVERSITY OF MICHIGAN
公开号:US20160084845A1
公开(公告)日:2016-03-24
The present invention relates to methods for detecting protein S-sulfinylation and S-sulfinylation within thiol groups in proteins, metabolites, or materials.
本发明涉及检测蛋白质、代谢产物或材料中的蛋白质S-亚磺酰基化和巯基中的S-亚磺酰基化的方法。
Activation of Thionitrites and Isoamyl Nitrite by Group 8 Metalloporphyrins and the Subsequent Generation of Nitrosyl Thiolates and Alkoxides of Ruthenium and Osmium Porphyrins
作者:Geun-Bae Yi、Li Chen,、Masood A. Khan、George B. Richter-Addo
DOI:10.1021/ic970282c
日期:1997.8.1
Ruthenium and osmium porphyrins of the form (por)M(CO) (per = octaelhylporphyrinato diction (OEP), tetratolylporphyrinato dianion (TTP)) react with thionitrites (RSNO) and isoamyl nitrite (RONO) to give the (por)(NO)(SR) and (por)M(NO)(OR) addition products. Reaction of S-nitroso-N-acetyl-L-cysteine methyl ester with (TPP)Fe(THF)(2) (TPP tetraphenylporphyrinato dianion) gives (TPP)Fe(NO) in high yield. The related reaction of isoamyl nitrite with [(TPP)Fe(THF)(2)](+) gives the nitrosyl alcohol product [(TPP)Fe(NO)(HO-i-C5H11)](+). The solid stare structures of (OEP)Ru(NO)(NACysMe-S) (NACysMe = N-acetyl-L-cysteinate methyl ester), (TTP)Os(NO)(S-i-C5H11), and [(TPP)Fe(NO)(HO-i-C5H11)](+) have been determined by X-ray diffraction.