Rat ceruloplasmin: resistance to proteolysis and kinetic comparison with human ceruloplasmin.
Rat ceruloplasmin: resistance to proteolysis and kinetic comparison with human ceruloplasmin.
复制标题
大鼠铜蓝蛋白:对蛋白水解的抵抗力以及与人铜蓝蛋白的动力学比较。
DOI:
10.1016/0003-9861(92)90357-3
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发表时间:
1992
影响因子:
3.9
通讯作者:
Aust,SD
中科院分区:
文献类型:
--
作者:
Ryan,TP;Grover,TA;Aust,SD
Rat ceruloplasmin was purified from serum using fast protein liquid chromatography and compared to human ceruloplasmin isolated in the same manner. Rat ceruloplasmin was found to be more resistant to plasmin-mediated proteolysis than was human ceruloplasmin. Although both proteins were cleaved initially to products with apparent molecular weights of 116,000 and 20,000 Da, rat ceruloplasmin was resistant to further proteolysis, whereas the human enzyme was cleaved to smaller fragments. Primary structure differences could account for the different relative stabilities between the two enzymes. Kinetic analysis of rat ceruloplasmin produced a biphasic v vs v s plot with apparent K m's of 40 and 1.5 μ m for iron. When compared with the human enzyme, rat ceruloplasmin showed about one-fourth the ferroxidase activity and had a much broader pH profile than that of human ceruloplasmin. Rates of p-phenylenediamine oxidation by rat ceruloplasmin were about one-half those obtained with human ceruloplasmin, with maximal p-phenylenediamine oxidase activity at pH 5.0 for both enzymes.
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DOI:
10.1016/s0021-9258(18)50692-x
发表时间:
1979
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
I. Goldstein;H. Kaplan;H. Edelson;G. Weissmann
通讯作者:
G. Weissmann
影响因子:
4.8
作者:
C. Huber;E. Frieden
通讯作者:
E. Frieden
DOI:
--
发表时间:
1989-01
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
V. Samokyszyn;D. Miller;D. Reif;S. Aust
通讯作者:
V. Samokyszyn;D. Miller;D. Reif;S. Aust
DOI:
--
发表时间:
1968
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
J. A. McDermott;C. Huber;S. Osaki;E. Frieden
通讯作者:
E. Frieden
影响因子:
--
作者:
D. Williams;G. R. Lee;G. Cartwright
通讯作者:
G. Cartwright