Dear Peter, Thanks a lot for rebuilding the operators for me! In case you have still time for this: Please, how was it possible to deduce that (x+9/69, y-28/79, z-46/90) was a pseudo-translational symmetry operator? It infact correspond to the small peak in the Native Patterson (not considered signficant in any of the softwares I tried) I mentioned in my previous message. And, please, what's the meaning of "stumped"? You can make a sound laugh at these questions! :-) Thanks agaian, Claudia Claudia Scotti Dipartimento di Medicina Sperimentale Sezione di Patologia Generale Universita' di Pavia Piazza Botta, 10 27100 Pavia Italia Tel. 0039 0382 986335/8/1 Facs 0039 0382 303673 ----------------------------------------> Date: Wed, 24 Oct 2007 21:17:59 -0700> From: [email protected]> To: [email protected]> Subject: Re: [phenixbb] NCS interpretation>> Hi Claudia,>> You seem to have these operators:>> (x ,y,z)>> ( x-34/68, -y+13/79, -z +20/90) [ a 2 fold screw axis along a]>> ( -x +75/68, -y-26/79, z+9/90) [stumped]>> (-x+38/69, y-38/79, -z+24/90) [ two fold screw along b ]>> (x+9/69, y-28/79, z-46/90) [pseudo translational symmetry]>> (-x+57/69, y+10/79, -z+63/90) [stumped]>> (-x + 86/69 , -y + 6/79 , z - 48/90) [ two fold screw along c ]>> (x-53/69, -y-36/79, -z + 61/90 ) [stumped]>>> Are you sure that it is not P212121 with a pseudo tranlstaional> symmetry or two fold NCS parallel to one of the screws?>> In any case, P1 is bad news, because phenix.refine cannot handle more> then two twin domains. I suggest going to all flavours of P2 ( P112x,> P12x1, P2x11) if you are absolutely sure about the sg not being p222> or so.>> Did you run xtriage?>> Cheers>> Peter> _______________________________________________> phenixbb mailing list> [email protected]> http://www.phenix-online.org/mailman/listinfo/phenixbb _________________________________________________________________ Connect to the next generation of MSN Messenger http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline