If you are willing to include cofactor-induced oligomerization instead of 
substrate-induced, how about imidazoleglycerol-phosphate dehydratase (IGPD) ? 

Inactive trimer:   1RHY
http://www.ncbi.nlm.nih.gov/pubmed/14724278

Active 24-mer  in presence of Mn2+ ions:  2F1D  
http://www.ncbi.nlm.nih.gov/pubmed/16338409

best wishes
Pete





On 9 Aug 2013, at 01:03, Shiva Bhowmik <gene1...@gmail.com> wrote:

> Dear All,
> 
> I am looking for references and/or example of substrate or ligand induced 
> oligomerization of enzymes related to activation. 
> 
> Any help in this regard would be greatly appreciated.
> 
> Thanks.
> 
> Shiva

Prof Peter Artymiuk
Krebs Institute
Department of Molecular Biology & Biotechnology
University of Sheffield
Sheffield
S10 2TN
ENGLAND

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