MODRES 1PY1 SEP E    5  SER  PHOSPHOSERINE                                      
MODRES 1PY1 SEP F    5  SER  PHOSPHOSERINE                                      
MODRES 1PY1 SEP G    5  SER  PHOSPHOSERINE                                      
MODRES 1PY1 SEP H    5  SER  PHOSPHOSERINE