[ccp4bb] Protein binding to Zn and Ca

[Neeraj Kapoor]

Hi all,
       I recently came across a question about an interesting idea. 
Does anyone know of an example of a protein binding to both Zn2+ and 
Ca2+ at the same time? Are there any known well studied precedents at 
all if any. Any help of insights would be very valuable.

thanks,
Neeraj