Science Fair Project Encyclopedia
Granzyme
Granzymes are exogenous serine proteases that are released by cytoplasmic granules within cytotoxic T cells and natural killer cells. Their purpose is to induce apoptosis within virus-infected cells, thus destroying them.
Cytotoxic T cells and natural killer cells release a protein called perforin which attacks the target cells. Perforin creates pores within the cells, through which the granzymes can enter, inducing apoptosis. They do so by cleaving caspases, which in turn activate caspase activated DNAse. This enzyme degrades DNA, thus inducing apoptotic cascades.
Granzyme secretion can be detected and measured using the ELISPOT and ELISA techniques.
03-10-2013 05:06:04
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details