┌─────────────────── Escherichia coli (12-511/511) APEC O1 (20)  
┌────────────┴─ Escherichia coli SMS-3-5   
┤                         ┌─ Escherichia coli (12-511/511) 042 (6)  
└──────┬──────────────────┴─────────────────── Escherichia coli MS 21-1   
       └┬─ Escherichia coli K12 (62)  
        └┬─────────────────────────────────────────────────────────── Escherichia coli (11-508/508) FVEC1412 (1)  
         └──────────────────┬─ Escherichia coli M718   
                            └──────────────────┬─ Escherichia coli ETEC H10407   
                                               └─────────────────── fig|1040638.4.peg.1155 O104:H4 str. LB226692 (34)  
  

  
L-Proline/Glycine betaine transporter ProP
 (7)
  
Proline/betaine transporter
 (1)
  
 Others 
(1)