Journal ArticleDOI
Characterization of microsomal ATPases from developing human placenta.
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TLDR
The enzyme activities in the placenta increase steadily with gestational age until the 18th to 21st week, and decrease in the second half of pregnancy, and Vmax of the enzymes decline at term.About:
This article is published in Biochemical Medicine and Metabolic Biology.The article was published on 1986-04-01. It has received 1 citations till now. The article focuses on the topics: Ca(2+) Mg(2+)-ATPase & ATPase.read more
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Human placental ATP-diphosphohydrolase : biochemical characterization, regulation and function
A.M. Kettlun,A. Alvarez,R. Quintar,M.A. Valenzuela,L. Collados,E. Aranda,A. Banda,L. Chayet,Mario Chiong,Marta Mancilla,Aída Traverso-Cori +10 more
TL;DR: Kinetic and physico-chemical studies on human placental microsomal fraction confirmed that the ATPase and ADPase activities detected in this fraction correspond to the enzyme ATP-diphosphohydrolase or apyrase, which is supported by the direct effect on washed platelets and by its plasma membrane localization.
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Journal Article
Protein Measurement with the Folin Phenol Reagent
TL;DR: Procedures are described for measuring protein in solution or after precipitation with acids or other agents, and for the determination of as little as 0.2 gamma of protein.
Journal ArticleDOI
The determination of inorganic phosphate in the presence of labile phosphate esters.
Oliver H. Lowry,Jeanne A. Lopez +1 more
TL;DR: It has been found possible to establish conditions under which inorganic phosphate can readily be determined in the presence of labile esters.
Journal ArticleDOI
On the mechanism of inhibition of intestinal alkaline phosphatase by L-phenylalanine. I. Kinetic studies.
TL;DR: The kinetic data are interpreted as indicating either the formation of a thermodynamically stable enzyme-inhibitor-substrate complex which, in effect, reduces the concentration of enzyme- Substrate complex available to decompose into products or the production of a weakly dissociable enzyme-Inhibitors-Substrate complex.
Journal Article
Developmental phase-specific alkaline phosphatase isoenzymes of human placenta and their occurrence in human cancer.
TL;DR: It is hypothesized that the alkaline phosphatase of human tumor tissues reflects the expression of placental genes corresponding to one or more phases of trophoblastic development.