3.4.22.55 ? x * 33000, active subunit 713545 3.4.22.55 ? x * 33000, isoform casp-2S, SDS-PAGE 732733 3.4.22.55 ? x * 45000, isoform casp-2L, SDS-PAGE 732733 3.4.22.55 ? x * 45000, SDS-PAGE 731274 3.4.22.55 dimer 1 * 13000 + 1 * ?, active form, SDS-PAGE 664533 3.4.22.55 dimer acive form, SDS-PAGE 664882 3.4.22.55 dimer active form 663875 3.4.22.55 dimer active form, 1 * 34000 + 1 * 18000, SDS-PAGE -, 664286 3.4.22.55 dimer active form, SDS-PAGE 664753 3.4.22.55 dimer caspase-2 is activated by dimerization, initiator caspases are present in the cell as inactive monomers and their activation is promoted by dimerization. Dimerization results when initiator caspases are recruited to large molecular weight protein complexes that act as signaling platforms 717458