TABLE 3.

Peptide utilization of opp mutants

CDM supplementUtilization by:
0140JOppA2OppA1OppB
All amino acids++++
Minus E
Minus EV
WE, EW, EVa
EVF, VYV+c+c
EAMAPK+b+b+b+b
EHIWLMVR+b+c
VKEAMAPK
LMHVRIEWC
LMHVRIEWCY
  • a Boldface indicates amino acids being tested for utilization from the given peptide or mix of peptides.

  • b All strains efficiently utilized glutamic acid from EAMAPK.

  • c Wild-type 0140J and the oppA2 mutant efficiently utilized glutamic acid and valine from the peptide mixture. OppA1 and OppB mutants were unable to grow under these conditions.