3.4.22.49 C1129S inactive 709220 3.4.22.49 C2029A - 638869 3.4.22.49 C2029A no autoproteolytic cleavage, unable to cleave SCC1 638865 3.4.22.49 E1483R/R1486E autoproteolytically cleaved like wild-type 638869 3.4.22.49 E1503R/R1506E autoproteolytically cleaved like wild-type 638869 3.4.22.49 E1532R/R1535E autoproteolytically cleaved like wild-type 638869 3.4.22.49 H1531A active site point mutation prevents Scc1 from being cleaved after binding 638864 3.4.22.49 additional information analysis of the homozygous zebrafish mutant cds (cease&desist), bearing a mutation in the separase gene, reveals high levels of polyploidy and aneuploidy, spindle defects, and a mitotic exit delay in mutant embryos. Carcinogenesis studies demonstrate that cds heterozygous adults have an eightfold increase in the percentage of fish bearing epithelial tumors 680013 3.4.22.49 additional information clear evidence for a non-proteolytic function of separase is provided: by separase gene deletion in mouse oocytes it is shown that separase null-oocytes are unable to either destroy chesin along chromosome arms or segregate homologous chromosomes and these oocytes are unable to complete cell division. Microinjection of wild-type separase mRNA in separase null-oocytes restores normal homologue disjunction and polar body extrusion 682065 3.4.22.49 additional information generation of human cells with one hESP allele-encoding uncleavable protein and another allele harboring a single cleavage site, the cells grow slowly owing to cell cycle delay, in particular during G2/M transition, but not when it was expected, i.e. during anaphase 718194