Since the discussion for crystallographers is fired up. I want to put on record that I totally agree with Tassos about the profile of a crystallographer. If you take away the crystals, then a crystallographer is no long a crystallographer.

Demetres


On 13/1/2013 9:52 μμ, Anastassis Perrakis wrote:
I think the real challenge (and one that makes for an excellent macromolecular 
crystallographer) is how well one can interpret a map with poor phases.
Let me disagree ... An excellent macromolecular crystallographer, is one that 
given some crystals can derive the best strategy to collect data,
process the data optimally, derive phases using all available information, 
build a model and refine it in such a way that it best explains both data
and geometrical expectations, and do these as efficiently as possible.

Efficiency may suggest using one automated suite or another - or indeed may 
best be achieved by manual labor - be it in the map or in data
collection strategy or refinement or another step: and here I am ignoring the 
art of transforming hair-needle-crystalline-like-dingbits to a diffracting 
crystal.

One that can interpret a map with poor phases can be either a genius in 3d 
orientation - or a not necessarily too intelligent nor experienced but 
determined student
that can drink and breathe this map for a few weeks in a row until a solution 
is in place. Neither would make an excellent macromolecular crystallographer by 
necessity.

Tassos

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Dr. Demetres D. Leonidas
Associate Professor of Biochemistry
Department of Biochemistry & Biotechnology
University of Thessaly
26 Ploutonos Str.
41221 Larissa, Greece
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Tel. +302410 565278
Tel. +302410 565297 (Lab)
Fax. +302410 565290
E-mail: ddleoni...@bio.uth.gr
http://www.bio.uth.gr
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