Nucleotide sequence of a mosquito 18S ribosomal RNA gene.

We have sequenced an 18S ribosomal RNA gene from the mosquito, Aedes albopictus. Computer alignment of the 1950 nucleotide coding region (56% A + T) with 18S rRNA sequences from two insect and three vertebrate species revealed greater sequence divergence among the insects than among the vertebrates. Sequence alignments showed that variable region V4, which has been considered to be the most poorly conserved domain in the 18S rRNA gene, was better conserved among insects and vertebrates than was the V6 domain.