Structure and zymogen activation of caspases
Structure and zymogen activation of caspases
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DOI:
10.1016/s0301-4622(02)00151-5
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发表时间:
2002-12-10
影响因子:
3.8
通讯作者:
Grütter, MG
中科院分区:
文献类型:
--
作者:
Donepudi, M;Grütter, MG
Apoptosis is primarily executed by active caspases, which are derived from the inactive zymogens. Structural and biochemical studies of caspases-1, -3, -7, -8 and -9 have greatly enhanced our understanding of the structure, function, and specificity of the active form of these enzymes. Only recently, the structures of procaspase-7 and biochemical studies of procaspase-9 and -8 have provided insight into the process of procaspase activation. The mechanism of zymogen activation requires limited proteolysis as for many other proteases. In addition, self-activation through oligomerization has been demonstrated for the initiator caspases-8, -9 and -10. These studies provide a structural mechanism for caspase activation, substrate/inhibitor binding, and contribute to the understanding of the biological role of caspases in the processes of apoptosis. (C) 2002 Elsevier Science B.V All rights reserved.