The maximum likelihood method used in Phaser doesn't use any cut-off as it doesn't use the Patterson formulation. It might work better for such an elongated case

Phil


On 28 Nov 2007, at 17:04, Pietro Roversi wrote:

Dear everyone,
                                   is any of the currently available
        molecular replacement programs capable of accepting a
description of an ellipsoid (rather than the radius of a sphere)
        to define the portion of the Patterson around the origin to be
        used in a Molecular
        Replacement rotation search? Our search model is an elongated
        object and we are searching in a cell with a=205 b=100 c=21
        Angstrom ... ;-)

                Ciao

                Pietro
--
Pietro Roversi
Sir William Dunn School of Pathology, Oxford University
South Parks Road, Oxford OX1 3ER, England UK
Tel. 0044-1865-275385

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