Sequence alignment between 4qb5(B) and UniProt seq Q21R90 (Q21R90_RHOFT):

Q21R90 (Q21R90_RHOFT): Glyoxalase/bleomycin resistance protein/dioxygenase from Albidiferax ferrireducens (strain ATCC BAA-621 / DSM 15236 / T118) 
                  10        20        30        40        50        60        70        80        90       100       110       120      
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------
UniProt: -MFSHVMVGVNDLEVSKKFYDALLGTLGIGPGVANKSRYFYRSPAGTFGITTPINGQPATHGNGSTLGFAAQSPEQCDAFHAAGIANGGTTCEEPPGFRDGAVGKLYLAYLRDPDGNKICALHRPAK
PDB seq: SMFSHVMVGVNDLEVSKKFYDALLGTLGIGPGVANKSRYFYRSPAGTFGITTPINGQPATHGNGSTLGFAAQSPEQCDAFHAAGIANGGTTCEEPPGFRDGAVGKLYLAYLRDPDGNKICALHR---
         ----------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---   
                  10        20        30        40        50        60        70        80        90       100       110       120