MODRES 3DEJ OCS A  163  CYS  CYSTEINESULFONIC ACID                              
MODRES 3DEJ OCS B  163  CYS  CYSTEINESULFONIC ACID                              
MODRES 3DEJ OCS C  163  CYS  CYSTEINESULFONIC ACID                              
MODRES 3DEJ OCS D  163  CYS  CYSTEINESULFONIC ACID