5,5-Dithiobis (2-nitrobenzoic acid) CAS: 69-78-3

Kev Ntsuas Thiol: DTNB feem ntau siv los ntsuas qhov concentration ntawm thiols hauv cov qauv protein. Cov ntaub ntawv no tseem ceeb rau kev kawm txog kev sib cuam tshuam ntawm cov protein-protein, kev sib sau ua ke ntawm cov protein, thiab cov tshuaj enzymatic uas cuam tshuam nrog cov pab pawg thiol. Cov lus teb colorimetric ntawm DTNB tso cai rau kev ntsuas cov thiols los ntawm kev ntsuas spectrophotometric.

Kev Tshuaj Xyuas Txog Redox State: DTNB tau siv los tshuaj xyuas qhov redox state hauv cov cell, cov nqaij, lossis cov qauv biological. Los ntawm kev ntsuas qhov kev hloov pauv ntawm thiol concentration, cov kws tshawb fawb tuaj yeem nkag siab txog kev ntxhov siab oxidative, kev ua haujlwm antioxidant, thiab cov redox signaling pathways.

Kev Ntsuas Enzyme: Qhov tshwj xeeb reactivity ntawm DTNB nrog thiols ua rau nws yog ib qho cuab yeej muaj txiaj ntsig rau kev ntsuas enzyme. Ntau cov enzymes, xws li glutathione-S-transferases, cystathionine-γ-lyase, thiab thioredoxin reductase, yog thiol-dependent thiab tuaj yeem ntsuas lossis ntsuas siv DTNB.

Kev Tshawb Fawb Txog Kev Ruaj Ntseg ntawm Cov Tshuaj Sib xyaw Hlau-Sulfur: DTNB yog siv los ntsuam xyuas qhov ruaj khov thiab kev ua haujlwm ntawm cov tshuaj sib xyaw hlau-sulfur thiab metalloproteins. Cov tshuaj no tuaj yeem ntes thiab ntsuas qhov muaj cov thiols uas koom nrog hauv kev chelation ntawm cov hlau ions, muab cov ntaub ntawv tseem ceeb txog kev sib cuam tshuam ntawm cov hlau-sulfur thiab kev sib koom tes chemistry.