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Hello Ute,

For removal of N-glycans:
PNGaseF will cleave immediately at the asparagine. The enzyme sometimes needs 
slightly denaturing conditions (Triton X-100, SDS) for optimal efficiency, 
which, of course, might be problematic if you want to use the product in 
crystallization trials.

For removal of O-glycans:
O-Glycosidase will cleave between Gal and GalNAc.

Success can be controlled by SDS-PAGE or preferably by MS.

Oliver


-------------------------------
 Dr. Oliver H. Weiergraeber
 Institute for Neurosciences and Biophysics
 - Structural Biology -
 Research Centre Juelich
 D-52425 Juelich
 Germany
 Phone: +49-2461-612028
 Fax: +49-2461-612020
-------------------------------

----- Original Message -----
From: Ute Krengel <[EMAIL PROTECTED]>
Date: Monday, July 10, 2006 6:08 pm
Subject: [ccp4bb]: Deglycosylation tips wanted!

> ***  For details on how to be removed from this list visit the  ***
> ***          CCP4 home page http://www.ccp4.ac.uk         ***
> 
> 
> Dear all,
> 
> I am trying to get an overview over deglycosylation recipes. Any 
> good tips
> about which enzymes to use and which procedures to follow and 
> controls to
> perform are welcome! Also references are interesting to me.
> 
> I promise to prepare a summary of the tips at the end!
> 
> Cheers,
> 
> Ute
> 
> 
> 
> 
> 

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