Hi You could look into AMPLE: http://ccp4wiki.org/~ccp4wiki/wiki/index.php?title=Ab_initio_modelling_and_automated_molecular_replacement_with_AMPLE Marjolein On 24 Aug 2016, at 20:42, Aditi Deshpande <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hello, How can I use an NMR model for molecular replacement for solution of a crystal structure? Thanks, Aditi