Authors: YuChih Lo SuChang Lin ChaoYu Yang JungYu Tung
Publish Date: 2014/11/15
Volume: 20, Issue: 2, Pages: 124-135
Abstract
Apoptosis is an important process to maintain cellular homeostasis Deregulated apoptosis has linked to a number of diseases such as inflammatory diseases neurodegenerative disorder and cancers A major signaling complex in the death receptor signaling pathway leading to apoptosis is deathinduced signaling complex DISC which is regulated mainly by death effector domain DEDcontaining proteins There are seven DEDcontaining proteins in human including FADD cFLIP caspase8 caspase10 DEDD DEDD2 and PEA15 The main players in DISC formation employ tandem DEDs for regulating signaling complex formation The regulatory mechanism of signaling complex formation is important and yet remains unclear Interestingly three caspase recruitment domain CARDcontaining members which belong to the same DD superfamily as DEDcontaining proteins also contains similar tandem CARDs Recent structural studies have shown that tandem CARDs are essential for the formation of a helical signaling complex This review summarizes recent structural studies on DEDcontaining proteins and especially discusses the studies on tandem DEDs and tandem CARDs which suggest new mechanisms of signaling complex assemblyThis work is supported by Ministry of Science and Technology Grant MOST 1012311B006008MY3 and Academia Sinica Thematic Research Program AS102TPB141 to YCL and Ministry of Science and Technology Grant MOST 1012320B001034MY3 and Academia Sinica Thematic Research Program AS102TPB142 to SCL and Academia Sinica Postdoc Fellowship to CYY
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