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Dear CCP4BB, I've recently collected data for 11mer build of DNA (9xG, 2xT). XDS, and DIALS gave me similar solution - SG: I2(1)2(1)2(1) or I222, with cell dimension 20.65, 22.96, 43.37, 90, 90, 90, what is too small for this size of the molecule. 11mer is rich in G, so we expect the G-tetraplex formation. Data were collected to almost 1 A, so it should be enough for trials with direct methods/ab initio solution. What I should do first to find correct SG and/or cell parameters? Best regards, Rafal -- |----------------------------------------------| |Rafal Dolot, Ph.D. | | | |Polish Academy of Sciences | |Centre of Molecular and Macromolecular Studies| |Department of Bioorganic Chemistry | |Macromolecular Crystallography Team | |Sienkiewicza 112 | |90-363 Lodz, Poland | |Phone: +48(42)6803215 | |Cell: +48 502897781 | |----------------------------------------------|