Release of Inorganic Tripolyphosphate from Adenosine Triphosphate during Vitamin B12 Coenzyme Biosynthesis
نویسندگان
چکیده
منابع مشابه
Release of inorganic tripolyphosphate from adenosine triphosphate during vitamin B-12 coenzyme biosynthesis.
The enzymatic conversion of vitamin Ba to its coenzyme form has been described in cell-free systems derived from Propionibacterium shermanii (1) and from Clostridium tetanomorphum (2). The 5’-deoxyadenosyl moiety that replaces the cobalt-bound cyanide of cyanocobalamin during Blz coenzyme formation is derived from adenosine triphosphate (ATP) (3). In the present work, the fate of the phosphate ...
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Radioactive adenosine triphosphate was synthesized transiently from adenosine diphosphate and radioactive inorganic phosphate by sodium and potassium adenosine triphosphatase from guinea pig kidney. In a first step, K+-sensitive phosphoenzyme was formed from radioactive inorganic phosphate in the presence of magnesium ion and 16 mM sodium ion. In a second step the addition to the phosphoenzyme ...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1963
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)81211-x