┌──────────────────────────────────────── Escherichia coli APEC O1 (5)  
│                                              ┌───────────────────── Escherichia coli M605   
│                                   ┌──────────┴─ Escherichia coli H299   
│                                  ┌┴──────────┬─ Escherichia coli TA206   
┤                     ┌────────────┤           └─────────── Escherichia coli SE15   
│                     │            └┬─────────── Escherichia coli WV_060327   
│┌────────────────────┤             └┬─────────── Escherichia coli 536 (1)  
││                    │              └─ Escherichia coli 83972 (8)  
└┤                    └─────────────────── Escherichia coli 2362-75 (2)  
 │             ┌─ Escherichia coli (12-400/400) 53638 (4)  
 │            ┌┴─────────── Escherichia coli (12-400/400) HS (1)  
 └────────────┤          ┌─────────── Escherichia coli MS 115-1   
              │          │                     ┌─ Escherichia coli (12-400/400) K12 (7)  
              └──────────┤           ┌─────────┴────────── Escherichia coli H736 (1)  
                         │┌──────────┴─ Escherichia coli M718   
                         ││            ┌─ Escherichia coli 101-1 (5)  
                         └┤ ┌──────────┴─────────── Escherichia coli (12-400/400) E24377A (1)  
                          │┌┴─ Escherichia coli (12-400/400) E110019 (10)  
                          └┤           ┌─ Escherichia coli SE11   
                           └┬──────────┴─────────── Escherichia coli (12-400/400) B171 (8)  
                            └──────────┬─ Escherichia coli MS 107-1   
                                       └──────────┬─ Escherichia coli H591 (2)  
                                                  └──────────┬─────────── Escherichia coli IAI1 (1)  
                                                             └─ Escherichia coli (12-400/400) B7A (1)  
  

  
Endo-1,4-beta-xylanase A precursor (EC 3.2.1.8)
 (15)
  
Putative xylanase
 (9)