Studies on Adenosine Triphosphate Transphosphorylases
نویسندگان
چکیده
منابع مشابه
Studies on Adenosine Triphosphate Transphosphorylases
The isolation of the crystalline enzymes, adenosine triphosphate-creatine transphosphorylase (1) and adenosine triphosphate-adenosine 5’-phosphate transphosphorylase (2), made possible a comparative approach to the general problem of the mechanism of action of the adenosine triphosphate transphosphorylases. The present series of papers extends earlier studies from this laboratory on these enzym...
متن کاملStudies on adenosine triphosphate transphosphorylases. II. Amino acid composition of adenosine triphosphate-creatine transphosphorylase.
Some of the physical and chemical properties of crystalline adenosine triphosphate-creatine transphosphorylase from rabbit muscle (1) have been previously described (2). In 1956, Friedberg reported on the amino acid composition of this enzyme (3). His data, however, were derived from analyses of only two samples hydrolyzed for the same time interval. Preliminary amino acid analyses from this la...
متن کاملStudies on adenosine triphosphate transphosphorylases. Human isoenzymes of adenylate kinase: isolation and physicochemical comparison of the crystalline human ATP-AMP transphosphorylases from muscle and liver.
Procedures are described for the isolation, in crystalline form, of the adenylate kinases from autopsy samples of human muscle and from human liver. Weight average molecular weights were determined by sedimentation equilibrium to be 22,000 (+/- 700) and 25,450 (+/- 160) for the human muscle and liver isoenzymes, respectively. By sodium dodecyl sulfate-polyacrylamide gel electrophoresis, their m...
متن کاملStudies on Myofibrillar Adenosine Triphosphatase with Calcium-free Adenosine Triphosphate.
It has been reported by several groups of workers that incubation of the relaxing factor granar of muscle with magnesium and adenosine triphosphate results in the formation of a soluble relaxing substance capable of inhibiting the magnesium-activated adenosine triphosphatase activity of myofibrils or actomyosin (3-6) and the contraction of single glycerinated muscle fibers (7). In addition, Uri...
متن کاملStudies on the Hydrolysis of Adenosine Triphosphate by Spinach Chloroplasts.
During studies on photophosphorylation in cell-free preparations of the blue-green alga, Anabaena variabilis, a photohydrolysis of ATP was found to be induced by high concentrations of cysteine or GSH, while photophosphorylation became inhibited (1, 2). A similar photohydrolysis was also reported with chloroplasts from spinach leaves, but still higher sulfhydryl concentrations were required to ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1962
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)83737-7