title: [Sedoheptulose-1,7-diphosphate as a source of pentose phosphates in heart muscle].
abstract: A possibility and some peculiarities of phosphatase degradation of sedoheptulose-1,7-diphosphate in the myocardium has been demonstrated. The reaction products are inorganic phosphate and sedoheptulose-7-phosphate; the latter product is the substrate of the transketolase reaction during pentose phosphates production. The process is largely localized in the soluble fraction of heart cells; in cellular organelles it is represented in a lesser degree. Possible regulatory mechanisms of pentose phosphate biosynthesis in animal tissues are discussed.
mesh_terms: D000818:Animals; D005260:Female; D006539:Heptoses / Q000378:metabolism*; D009206:Myocardium / Q000166:cytology / Q000378:metabolism*; D010428:Pentosephosphates / Q000096:biosynthesis*; D051381:Rats; D013347:Subcellular Fractions / Q000378:metabolism; D013403:Sugar Phosphates / Q000378:metabolism; D014174:Transketolase / Q000378:metabolism
chemical_list: D006539:Heptoses; D010428:Pentosephosphates; D013403:Sugar Phosphates; D014174:Transketolase
vernacular_title: Sedogeptulozo-1,7-difosfat-istochnik fosfopentoz v myshtse serdtsa