75.0 MB (75.0 MB compressed)
5791 x 4529 pixels
49.0 x 38.4 cm ⏐ 19.3 x 15.1 in (300dpi)
DR MARK J. WINTER / SCIENCE PHOTO LIBRARY DR MARK J. WINTER / SCIENCE PHOTO LIBRARY
Caspase-1 molecule. Computer artwork showing the secondary structure of a molecule of caspase-1. Caspase-1 is a protease, an enzyme that cleaves proteins. It is found predominantly in the cell cytoplasm, where it activates interleukin-1-beta, a molecule that mediates immune and inflammatory responses. Due to this activity caspase-1 is also known as ICE (interleukin-1-beta converting enzyme). Like other caspases it also plays a role in apoptosis (programmed cell death), but only when over-expressed.
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