Studies on the Pathways of Brain Cholesterol Biosynthesis after Squalene Cyclization

Chapters in this book

1. Frontmatter 1
2. Contents 3
3. Introduction 4
4. On the Biosynthesis of Sterols and Pentacyclic Triterpenoids in Tetrahymena pyriformis 5
5. Biosynthesis in Plant sterols V. Formation of Cardenolides in Digitalis Plants 17
6. Studies on the Pathways of Brain Cholesterol Biosynthesis after Squalene Cyclization 31
7. The Function of Sterols in Mycoplasma 37
8. Formation of Sterol Esters in Mycobacteria 47
9. Sterols in Bacteria 53
10. Studies on the Degradation of Ring A of Steroids by Microbial Enzymes 57
11. Microbiological Degradation of Bile Acids XX . Some Nitrogen-Containing Compounds as Cholic Acid Metabolites by Microorganisms 63
12. Microbiological Degradation of Ring C and D of the Steroid Skeleton 81
13. Zusammenhänge zwischen Steroidumwandlung und Eigenmetabolismus der Mikroorganismen 89
14. Microbiological Conversion of Cholesterol into Androsta-1,4-diene-3,17-dione 101
15. Hydroxylation with Ferro-Ascorbate as a Completion or Substitute of the Microbiological Transformation of Steroids 107
16. Preparation of Steroid Metabolites by Microbial Reactions 111
17. Transformations of Cardenolides by Microorganisms of the Intestine 115
18. Combined Gas Chromatography-Mass Spectrometry in Steroid Research 121
19. Anomalous Steroids and Fungi 131
20. Introduction of Oxygen Functions in 3-Desoxysteroids of the C₁₉-Series by Corynebacterium, 135
21. Über einige neue Ergebnisse der enzyinatischen Umwandlung von C₁₈-Steroiden durch verschiedene Mikroorganismen 141
22. Les "Récepteurs Hormonaux". Mise en Evidence de la Liaison Spécifique de l'Oestradiol à des Protéines Uterines 147
23. Studies on the Mechanism of Action of Estrogen and Progesterone 155
24. Action of Steroid Hormones on the Cell Nucleus 165
25. The Mechanism oi Action of Steroid Hormones: Some Aspects of the Contemporary Problem 171
26. Effect of Steroids of Different Type on Transport ATPase 179
27. Charakterisierung eines Steroidrezeptors bei Streptomyces hydrogenans 185
28. Further Studies of Microbial Reduction of 20-Keto Steroids into 20α-Hydroxy Steroids 195
29. Studies of 3-Oxo-Δ⁴-Steroid-Δ¹-Oxydoreductase of Arthrobacter Simplex 201
30. Enzymatic Mechanism of Microbiological Dehydrogenation and Hydrogenation of Steroid Ring A 213
31. Closing Remarks 217
32. KURT SCHUBERT 219
33. Index 223