Subject: How can I determine the amino acid sequence for caspase proteolysis?

Hello, I am a junior who is currently conducting a science project on 
caspases.  I would like to know how I can determine the specific amino acid 
sequence in which caspases show affinity for (or cleave after).  Which 
programs can I use to determine this?  I did a secondary experiment to measure 
YCA1 (a putative yeast caspase) activity in S. cerevisiae.  The protein has 
already been discovered as a regulator of apoptosis in yeast and the 
Saccharomyces genome has already been sequenced.  I have been told that 
tBLASTn can determine the sequence of YCA1 but are there any other programs 
available and how can one carry out this procedure?

Thankyou

Re: How can I determine the amino acid sequence for caspase proteolysis?