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The assay of ATP-sulfurylase

Hommes, F.A. ; Moss, L.

Amsterdam : Elsevier

Analytical Biochemistry 154 (1986), S. 100-103

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ISSN: 0003-2697

Keywords: APS-kinase ; ATP-sulfurylase ; HPLC ; adenosine-phosphosulfate ; phosphoadenosine phosphosulfate

Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Topics: Biology , Chemistry and Pharmacology

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1016/0003-2697(86)90501-4

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Properties of the 3′-phosphoadenosine-5′-phosphosulfate (PAPS) synthesizing systems of brain and liver (1987)

Matsuo, K. ; Moss, L. ; Hommes, F. A.

Springer

Neurochemical research 12 (1987), S. 345-349

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ISSN: 1573-6903

Keywords: ATP-sulfurylase ; APS-kinase ; liver ; brain

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract Chromatography of brain and liver 100,000g supernatants over HPLC molecular sieve columns revealed striking differences in the molecular weight distribution of ATP-sulfurylase and APS-kinase of the two tissues, pointing to different enzymic species for both enzymes in brain and liver. This was further substantiated by kinetic characterization of the two enzymes of both tissues. APS-kinase of liver is allosterically activated by ATP, while the brain enzyme is not. ATP-sulfurylase of brain is activated at high, but still physiological concentrations of ATP. Brain ATP-sulfurylase is inhibited by phenylalanine.