1.11.1.5 ? x * 34418, mass spectrometry 724372 1.11.1.5 ? x ? 78000, calculated, mature protein, x * 80000, SDS-PAGE 673536 1.11.1.5 dimer - 705165 1.11.1.5 dimer 2 * 36500, SDS-PAGE -, 394632 1.11.1.5 dimer 2 * 37500, SDS-PAGE 394626 1.11.1.5 dimer 2 * 44000, SDS-PAGE 394635 1.11.1.5 dimer in the presence of Ca2+, sedimentation equilibrium analysis 657977 1.11.1.5 dimer SDS-PAGE, wild type and W191F mutant enzymes 659521 1.11.1.5 dimer the dimer is stabilized by hydrophobic interactions between both C-terminal coiled coils of the two monomers. There are also hydrophobic interactions among residues 39-66. The presence of Ca2+ triggers conformational changes, which contribute to stronger interactions within the dimer 660523 1.11.1.5 dimer ultracentrifugation, untreated enzyme 659522