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. 2014 Jul 8;5(4):e01446-14. doi: 10.1128/mBio.01446-14

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Copyright © 2014 Sacco et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Noncommercial-ShareAlike 3.0 Unported license, which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original author and source are credited.

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FIG 1 — Roles of ddcY and stpA in ampicillin resistance. (A) Map of the E. faecium locus encoding the protein phosphatase StpA and the serine/threonine kinase Stk. (B) Sequence alignment of protein phosphatases. Identical and conserved amino acids are highlighted in black and gray, respectively. The positions of amino acid substitutions detected in the mutants are indicated below the alignment. In mutant Ma, a frameshift was detected in codon 236 of stpA. (C) MICs of ampicillin for E. faecium D344S and resistant mutants.