An investigation on the role of 5-hydroxytryptophan in the biosynthesis of melanins † Tryptophan (Trp) is an essential amino acid for human nutrition and its dietary source is from naturally occurring proteins. This amino acid is bound to serum albumin to the extent of about 85-90%. 1 The free fract
On the role of 26-deoxylaidlomycin in laidlomycin biosynthesis
✍ Scribed by Dr. U. Gräfe; C. Stengel
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 240 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0233-111X
No coin nor oath required. For personal study only.
✦ Synopsis
3H-26-deoxylaidlomycin (I) was fed to growing cultures of Streptoverticillium olivoreticuli IMET 43782 producing both I and laidlomycin (II). The incorporation of labelled I into laidlomycin II was neglible showing a role of I as precursor of II to be at variance. Otherwise, a measurable conversion was achieved by the use of sonicated 48 hrs mycelium suggesting that final oxidation of I to II could be mediated by a compartmentized oxidoreductase.
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## Abstract Loline alkaloids are saturated pyrrolizidines with an oxygen bridge between carbon atoms C‐2 and C‐7 and an amino group on C‐1. They are bioprotective alkaloids produced by __Epichloë__ and __Neotyphodium__ species, mutualistic fungal endophytes that are symbiotic with cool‐season grass