Re: [ccp4bb] Is there an easy way to down-weight figures of merit?

[Kay Diederichs]

Eleanor Dodson schrieb:

William Scott wrote:

Hi Citizens:





Thanks.

Bill Scott

I realize this is one of those warranty-violating questions, but is there a simple way to down-weight figures of merit, or the equivalent in terms of Hendrickson-Lattman coefficients? I'm trying to generalize and automate a procedure for solving RNA structures without heavy-atom phases by feeding phaser random-sequence model A-form RNA helices. It pretty much works, but there comes a point where I want to use the phase probability distribution from the partial/inaccurate model in solvent-flattening while discarding the model, with the hope of minimizing model bias. The problem is that if the refinement of the partial/inaccurate model goes reasonably well, the FOM become inflated to the point where solvent-flattening becomes less effective for improving and correcting phases.

SFCHECK can be used to multiply any column by anything - so I guess it would downweight FOMs etc

Eleanor

Eleanor,

I believe you mean sftools, not sfcheck.

best,

Kay
--
Kay Diederichs                http://strucbio.biologie.uni-konstanz.de
email: [EMAIL PROTECTED]    Tel +49 7531 88 4049 Fax 3183
Fachbereich Biologie, Universität Konstanz, Box M647, D-78457 Konstanz

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