The mitochondrial genome of the entomophagous endoparasite Xenosvesparum (Insecta: Strepsiptera)
In this study, the nearly complete sequence (14,519 bp) of the mitochondrial DNA (mtDNA) of the entomophagous endoparasite Xenos vesparum (Insecta: Strepsiptera) is described. All protein coding genes (PCGs) are in the arrangement known to be ancestral for insects, but three tRNA genes (trnA, trnS(gcu), and trnL(uag)) have transposed to derived positions and there are three tandem copies of trnH, each of which is potentially functional. All of these rearrangements except for that of trnL(uag) is within the short span between nad3 and nad4 and there are numerous blocks of unassignable sequence in this region, perhaps as remnants of larger scale predisposing rearrangements. X. vesparum mtDNA nucleotide composition is strongly biased toward As and Ts, as is typical for insect mtDNAs. There is also significant strand skew in the distribution of these nucleotides, with the J-strand being richer in A than T and in C than G, and the N-strand showing an opposite skew for complementary pairs of nucleotides. The hypothetical secondary structure of the 16S rRNA has also been reconstructed, obtaining a structural model similar to that of other insects.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Director. Office of Science. Office of Biological andEnvironmental Research Program; Italian MUIR(PRIN), University of Siena(PAR)
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 889896
- Report Number(s):
- LBNL-59178; GENED6; R&D Project: Y00010; BnR: 600305000; TRN: US200620%%77
- Journal Information:
- Gene, Vol. 376, Issue 2; Related Information: Journal Publication Date: 07/19/2006; ISSN 0378-1119
- Country of Publication:
- United States
- Language:
- English
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