If you want to know what in your crystal, run SDS-PAGE of your crystal.

On Thu, Dec 5, 2013 at 6:39 AM, Kris Tesh <kris.t...@att.net> wrote:

> If either of the two protein structures has been determined/deposited, I
> would check if your unit cell matched one of them.
>
> Kris F. Tesh, Ph. D.
> Department of Biology and Biochemistry
> University of Houston
>
>   ------------------------------
>  *From:* "Tanner, John J." <tanne...@missouri.edu>
> *To:* CCP4BB@JISCMAIL.AC.UK
> *Sent:* Wednesday, December 4, 2013 4:29 PM
> *Subject:* Re: [ccp4bb] Can Mathew's coefficient tell about a complex
>
>  First of all, there are two Ts and no apostrophe in Matthews.  The
> method is based on the following paper, which is worth reading.  It is one
> of the first examples, possibly the first, of structural bioinformatics.
>
>  J Mol Biol. 1968 Apr 28;33(2):491-7.
> Solvent content of protein crystals.
> Matthews BW.
> http://www.ncbi.nlm.nih.gov/pubmed/5700707
>
>  Secondly, you might run a gel on your crystals.
>
>
>   John J. Tanner
> Professor of Biochemistry and Chemistry
> University of Missouri-Columbia
> 125 Chemistry Building
> Columbia, MO 65211
> Phone: 573-884-1280
> Fax: 573-882-2754
> Email: tanne...@missouri.edu
> http://faculty.missouri.edu/~tannerjj/tannergroup/tanner.html
>
>  On Dec 4, 2013, at 4:06 PM, abbas maqbool <abbas_maqb...@yahoo.com>
>  wrote:
>
>   Dear All,
>  I crystallized a complex of two proteins and got x-ray data. However I
> dont know if I have got complex or just one of the protein has
> crystallized. Can I check it by mathew's coefficient? If yes how? One of my
> protein is 30 kDa nad other one is 12 kDa.
>  Actually I calculated Mathew's coeffient (based on Mol. wt of complex
> 42000 Da), and results were like that
>
>
>  Cell Volume = 993567
>  Nmol/asym        Mathews coeff            %solvent
>  1                            3.94                               68
>  2                            1.97                                37
>  3                             1.3                                    6
>
>
>  Can any one please explain what does it suggest?????
>
>  Thanks
>  Abbas
>
>
>
>
>

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