A borohydride reduction method for characterization of the acyl phosphate linkage in proteins and its application to sarcoplasmic reticulum adenosine triphosphatase.
نویسندگان
چکیده
A new method for identification and characterization of an acyl phosphate linkage in phosphorylated proteins is presented. The method involves reductive cleavage of the acyl phosphate bond with sodium [3H]borohydride to form a labeled aminohydroxy acid residue. [3H]Borohydride reduction of the phosphorylated (Ca2+, Mg2+)-adenosine triphosphatase of sarcoplasmic reticulum, followed by analysis of the acid hydrolysate of the reduced enzyme, showed the formation of labeled homoserine. The results demonstrate that the phosphoryl group of sarcoplasmic reticulum ATPase is attached to the /3-carboxyl group of an aspartyl residue at the active site.
منابع مشابه
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ورودعنوان ژورنال:
- The Journal of biological chemistry
دوره 248 23 شماره
صفحات -
تاریخ انتشار 1973