Dear Subbu,

One more thing you can do is to search with an ensemble of structures (4 in your case) for molecular replacement.

Fred.

Narayanan Ramasubbu wrote:
Deal All:
I have a 2.0 A data for a SeMet protein (native crystal not available yet!) that has 6 Se sites. The cell comes out to be 65 67 101 and the angles are all very close to 90. The data set was collected in house with Cu 1.5418 A

We integrated and scale in orthorhombic and the statistics are reasonable.

There are 4 homologous structures and all of them have a sequence identity of 15-16 %.

I have tried Phaser, AMoRe, EPMR with varying templates
with polyala, polyser and varying the resolutions.

I have also done a modeller and found best match with one of the four structures. I have used this derived model as well for input.

I would like to know whether there other options (I am working on getting a good synchrotron data set at the peak wavelength for Se).

Thanks
Subbu
PS: I am also trying P1 just in case.


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