Do you have crystals?
Do they diffract? If so, to what resolution?
What resolution do you require to answer your biological question?
F
On Jun 12, 2012, at 7:46 PM, LISA <[log in to unmask]> wrote:
> Hi all,
>
> My work is to solve huge complex containing 4 different proteins and total molecular weight is about 300 KD. I can purify the complex by co-expression them in E.coli. This complex contains 8 protein A, 2 protein B and 1 protein C and D. protein B and protein C have homology structures deposited in PDB database. No homology structure available for protein A and D, which contribute 60% of the whole molecular weight for the complex.
>
> Now I am trying to find a way to solve the phase of this complex. I am thinking of use sad or mad with se-Met. There total 111 Met residues in this complex. Is it possible to solve this complex by se-Met? Does someone have experience to solve huge complex structure with se-met? It is also very welcome for all the suggestion. Thank you.
>
> All the best,
>
> Lisa
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