Caspase-3/Sandbox: Difference between revisions
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(Structural insights into its function) | (Structural insights into its function) | ||
In its inactive form, procaspase-3 consist of a large subunit and small subunit, interjected by an aspartic acid residue. This aspartate is the site recognized by activated initiator caspases, such as caspase-8 and caspase-9. Upon cleavage, procaspase-3 is separated into two subunits, p18/20 and p12/10 respectively, which heterodimerize to yield the active form of caspase-3. In its active form, caspase-3 is able to cleave substrates such as ICAD (inhibitor of caspase-activated deoxyribonuclease). Cleavage of ICAD leads to abrogation of its inhibitory effect on CAD, allowing CAD to migrate into the nucleus and cause double-strand breaks in DNA, thus contributing to apoptosis. | In its inactive form, procaspase-3 consist of a large subunit and small subunit, interjected by an aspartic acid residue. This aspartate is the site recognized by activated initiator caspases, such as caspase-8 and caspase-9. Upon cleavage, procaspase-3 is separated into two subunits, p18/20 and p12/10 respectively, which heterodimerize to yield the active form of caspase-3. In its active form, caspase-3 is able to cleave substrates such as ICAD (inhibitor of caspase-activated deoxyribonuclease). Cleavage of ICAD leads to abrogation of its inhibitory effect on CAD, allowing CAD to migrate into the nucleus and cause double-strand breaks in DNA, thus contributing to apoptosis. | ||
[[Image:ICAD cleavage.jpg|300px]] | |||
==Disease== | ==Disease== | ||
