نتایج جستجو برای: methionine sulfoxide reductase

تعداد نتایج: 70481  

Journal: :The Journal of biological chemistry 1986
Y Shechter

Treatment of amino acids, peptides, and proteins with aqueous solution of dimethyl sulfoxide (Me2SO) and hydrochloric acid (HCl) resulted in the oxidation of methionine to methionine sulfoxide. In addition to methionine, SH groups are also oxidized, but this reaction proceeds after a lag period of 2 h. Other amino acids are not modified by aqueous Me2SO/HCl. The reaction is strongly pH-dependen...

Journal: :Mechanisms of ageing and development 2009
Valentina A Shchedrina Gerd Vorbrüggen Byung Cheon Lee Hwa-Young Kim Hadise Kabil Lawrence G Harshman Vadim N Gladyshev

Methionine sulfoxide reductases (Msrs) are enzymes that repair oxidized methionine residues in proteins. This function implicated Msrs in antioxidant defense and the regulation of aging. There are two known Msr types in animals: MsrA specific for the reduction of methionine-S-sulfoxide, and MsrB that catalyzes the reduction of methionine-R-sulfoxide. In a previous study, overexpression of MsrA ...

2010
Lisa A. Brennan Wanda Lee Marc Kantorow

A key feature of many age-related diseases is the oxidative stress-induced accumulation of protein methionine sulfoxide (PMSO) which causes lost protein function and cell death. Proteins whose functions are lost upon PMSO formation can be repaired by the enzyme methionine sulfoxide reductase A (MsrA) which is a key regulator of longevity. One disease intimately associated with PMSO formation an...

2003
John Hart Alexander B. Taylor David M. Benglis Subramanian Dhandayuthapani

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