no it's called SAD exactly for that reason .. it's SAD that somebody developed a phasing method that does not solve the phase problem! sorry, stupid joke ... google (at least) is our friend btw .... ale P please don't print this e-mail unless you really need to ******************************************************* Dr. Alessandro Vannini, PhD Cramer lab Gene Center, Deparment of Chemistry and Biochemistry Ludwig-Maximilian-Universität München Feodor-Lynen-Str. 25 81377 München Tel. : +49-89-2180-76955 ******************************************************** On 30 Aug 2010, at 20:32, Jane Bailey wrote: > Hi, All > > I would like to ask whether is it possible to allocate the Se site > and obtain the phase by just using the SAD data set (no native > dataset used)? > > Thanks, > Qing >