Abstract
Abstract A clone of the Drosophila melanogaster (Meigen) gene Act5C was used to isolate an actin gene from a Hessian fly, Mayetiola destructor (Say), genomic library in phage lambda. A combined molecular and cytological analysis with the Hessian fly actin gene (designated MdA1) was undertaken. The coding region of this gene was contiguous and encoded a protein that was 99% identical to the intersegmental muscle actins 57A and 87E from D. melanogaster. Additionally, the protein was >97% identical to the flight-muscle-specific actin 88E from D. melanogaster as well as muscle actins 1 and 2 from Bombyx mori (L.). Only the muscle actin 79B from D. melanogaster, a muscle actin in leg and thorax, showed <97% identity with actin 1 from Hessian fly. The actin 1 from Hessian fly shared less amino acid identity (94–95%) with the cytoplasmic actins from D. melanogaster, Anopheles gambiae (Giles), and B. mori, with differences occurring in a conserved region of the cytoplasmic actins proposed to function in interacti...
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