Tissue transglutaminase is a caspase substrate during apoptosis. Cleavage causes loss of transamidating function and is a biochemical marker of caspase 3 activation
Cell Death and Differentiation (1999) - Comments
pubmed: 10556977  doi: 10.1038/sj.cdd.4400573  issn: 1350-9047  issn: 1476-5403 

Marina Fabbi, Danilo Marimpietri, Stefania Martini, Claudio Brancolini, Angela Amoresano, Andrea Scaloni, Antonio Bargellesi, Elisabetta Cosulich