Table 2.

Proposed nomenclature for new tetracycline resistance determinants

ClassaDeterminantbStructuralc, dRegulatory (repressor)d
GeneProteinGeneProtein
nTet ntet(n)Tet(n)tetR(n)TetR(n)
  • a Class n is used as an example, where n is an Arabic numeral (31, 32, 33, etc.), numbered in approximate order of public dissemination.

  • b Note the space between Tet and n.

  • c In the case of multiple structural genes, use the following format: tetA(n), tetB(n), etc.

  • d After an introductory use, “n” may be omitted where no ambiguity exists.