Omit map

Ramachandran Murali murali at
Mon Aug 16 11:39:32 EST 1993

	I am trying calculate omit maps using ccp4 and Xplor.
None of the omit maps calculated was different from my conventional 
2fofc map. I may be missing something.
I would appreciate any suggestion to my problem. 
   The way I calculate:
(1) ccp4:
      delete about 20 residues from the input brk file and run
sf,fft and mappage.
(2) xplor:
	 I tried both plain omit map as described above and also
the sa_omit map.

Ramachandran Murali

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