Identification of 5,9-dimethylheptadecane as a sex pheromone of the mothLeucoptera scitella
✍ Scribed by W. Francke; S. Franke; M. Toth; G. Szöcs; P. Guerin; H. Arn
- Publisher
- Springer
- Year
- 1987
- Tongue
- English
- Weight
- 244 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0028-1042
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✦ Synopsis
Base exchanges occurred in an additional eight positions resulting in an overall homology of 87%. Similar evolutionary processes can be deduced from the tRNA)~N sequence.
The Locusta gene of 70 nucleotides is 3 bp longer due to two base insertions in the T~PC and a third in the V loop. An additional seven base exchanges result in an overall homology of 86%. The tRNA~j%N sequence reveals an AA mismatch at the beginning of the anticodon stem (see arrow). An AA mismatch in the same position is reported for a tRNA Val gene in Neurospora [11]. Examples for mismatches in the T~C stem are a TT mismatch in the phe tRNAvv c gene of Tetrahymena [1] and in a tRNA Val gene from A. albopictus [5].
A copy of the leu tRNAcv N gene indicated in Fig. 1 A is found within a cloned DNA fragment of nuclear DNA homologous to mitochondrial genes [6,12,13] and is thus part of a "promiscuous, DNA" sequence.
We thank K.
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## Abstract The synthesis of (5__S__,9__S__)‐5,9‐dimethylheptadecane (1) as well as that of (5__S__,9__S__)‐5,9‐dimethyloctadecane (2) has been achieved by starting from methyl (__R__)‐3‐hydroxy‐2‐methylpropanoate (3a) and (__S__)‐citronellal (7).
All of the stereoisomers of 10,14-dimethyloctadec-1-ene (1), (Lyonetia prunifoliella), were synthesized by starting from the enantiomers of citronellol (4) and methyl 3-hydroxy-2-5,9-dimethyloctadecane (2) and 5,9-dimethylheptadecane (3), the sex pheromone components of the apple leafminer methylpro