Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Wolfgang Staib"'
Autor:
Malte E.C. Förster, Wolfgang Staib
Publikováno v:
International Journal of Biochemistry. 24:1111-1116
1. 1. The kinetics of mitochondrial mammalian pyruvate dehydrogenase multienzyme complex (PDHC) is studied by the formation of CO2 using tracer amounts of [1-14C]pyruvate. It is found that the Hill plot results in a (pseudo-)cooperativity with a tran
Autor:
M. Förster, Wolfgang Staib
Publikováno v:
International Journal of Biochemistry. 22:773-778
1. Mammalian pyruvate dehydrogenase multienzyme complex (PDC) is measured with two different optical assays: (i) formation of p-nitro-acetanilid with arylamine-acetyltransferase and (ii) NAD reduction. 2. It is found that in contrast to the NAD assay
Publikováno v:
Acta Endocrinologica. 115:275-281
The first part of this study compares peripheral testosterone levels with intratesticular levels of the cytochromes P-450 of two key enzymes of androgen biosynthesis, i.e. mitochondrial cholesterol monooxygenase (P-450(cscc)) and microsomal steroid-1
Publikováno v:
Steroids. 43:57-69
Binding of estradiol (E2), estriol (E3), RU16117, and moxestrol to testis cytosol from adult male rats was investigated. High-affinity binding sites were identified in the 8-9S region of sucrose density gradients; a second, high-capacity binding comp
Publikováno v:
Biochimica et Biophysica Acta (BBA) - General Subjects. 992:115-123
Metabolism of L-isoleucine, L-alloisoleucine and corresponding 2-oxo acids in rat hind limb muscle was comparatively studied under steady-state perfusion conditions. At 0.5 mM L-[1-14C]isoleucine, apparent transamination and 2-oxo acid decarboxylatio
Publikováno v:
Analytical Biochemistry. 137:164-169
A cell superfusion system is presented in which cells can be kept in suspension if there is an equilibrium between cell sedimentation velocity and superfusion medium flow velocity. Since the cross-section area of the central core increases gradually,
Autor:
Wolfgang Staib, Nikolaus Kühn-Velten
Publikováno v:
Acta Endocrinologica. 105:571-576
A marked decrease of progesterone conversion to androgens in vitro by purified rat testis Leydig cells is observed from 1/2 to 3 days after treatment of the rats with 100 IU human choriogonadotrophin (hCG) in vivo. The maximal inhibition results 2 da
Publikováno v:
Biological Chemistry Hoppe-Seyler. 369:181-192
The time course (0-60 min) of label incorporation from NaH14 CO3 into citric-acid-cycle intermediates and amino acids was investigated in incubations of isolated rat diaphragms. On the basis of these results, 14CO2 exchange by isocitrate dehydrogenas
Publikováno v:
Journal of Steroid Biochemistry. 33:33-39
On the basis of the concept that steroids accumulate in the lipid phase of endoplasmic reticulum membranes and approach the active sites of steroidogenic cytochromes P -450 from a hydrophobic environment, we describe a procedure that allows calculati