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. 1985;200(1):33-9.
doi: 10.1007/BF00383309.

Nucleotide sequence of a spectinomycin adenyltransferase AAD(9) determinant from Staphylococcus aureus and its relationship to AAD(3") (9)

E Murphy

Nucleotide sequence of a spectinomycin adenyltransferase AAD(9) determinant from Staphylococcus aureus and its relationship to AAD(3") (9)

E Murphy. Mol Gen Genet. 1985.

Abstract

The nucleotide sequence of the spc determinant of the Staphylococcus aureus transposon Tn554 has been determined. This gene encodes a spectinomycin adenyltransferase, AAD(9), that mediates resistance to spectinomycin but not to streptomycin. The sequence predicts a 260 amino acid protein of molecular weight 28,943. A spectinomycin-sensitive mutant (spc-1) contains a G----A transition resulting in substitution of threonine (ACA) for alanine (GCA) at residue 165. The predicted amino acid sequence is 36% homologous to that of a widely distributed, gram-negative streptomycin/spectinomycin adenyltransferase, AAD(3") (9), specified by the aadA determinant (Holingshead and Vapnek 1985).

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