┌────────────────────────────────────────────────────────────────── Escherichia coli (87-122/129) EC4100B (41)  
┤                                                               ┌─ Escherichia coli (250-288/288) O157:H7 str. EC4024   
└────────────────┬──────────────────────────────────────────────┴──── Escherichia coli (268-306/306) K12 (133)  
                 └───────────────────────────────────────────────┬──── Escherichia coli (273-310/311) O26:H11 str. 11368   
                                                                 └─ Escherichia coli (301-338/339) K12 (132)  
  

  
Dipeptide transport system permease protein DppB (TC 3.A.1.5.2)
 (2)
  
Glutothione ABC transporter permease protein
 (1)
  
Oligopeptide transport system permease protein OppB (TC 3.A.1.5.1)
 (1)
  
Nickel transport system permease protein NikB (TC 3.A.1.5.3)
 (1)