Interleukin 1 beta (IL-1 beta) processing in murine macrophages requires a structurally conserved homologue of human IL-1 beta converting enzyme.


Murine interleukin 1 beta (IL-1 beta) convertase (mICE) was identified in cytosolic extracts of peritoneal exudate cells (PECs) and macrophage cell lines. mICE cleaves both the human and mouse IL-1 beta precursors (pIL-1 beta) at sites 1 and 2 but fails to cleave a human pIL-1 beta (Asp116 to Ala) mutant at site 2, indicating that Asp is required to the… (More)


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