3.4.21.46 C25A has increased activity compared to the native VEGF-DDELTANDELTAC. Efficiently binds to the soluble receptor VEGFR-2/IgGFc. The C25A mutant behaves mainly as a monomeric protein on SDS-PAGE under reducing conditions but as a dimeric protein under non-reducing conditions. It induces VEGFR-2 Tyr-1175 phosphorylation 698902 3.4.21.46 C25A/P43S has biological activity comparable to that of the native protein in Ba/F3-VEGFR-2 cells 698902 3.4.21.46 C25I is mainly in a presumably covalently bound dimeric form 698902 3.4.21.46 C25L has increased activity compared to the native VEGF-DDELTANDELTAC, the C25L mutant is the most active mutant and is mainly in a presumably covalently bound dimeric form, has highest affinity to bind soluble receptor VEGFR-2/IgGFc. It induces VEGFR-2 Tyr-1175 phosphorylation 698902 3.4.21.46 C25V is mainly in a presumably covalently bound dimeric form 698902 3.4.21.46 C44A does not bind to the soluble receptor VEGFR-2/IgGFc 698902 3.4.21.46 C53A does not bind the soluble receptors VEGFR-2/IgGFc and VEGFR-3/IgGFc 698902 3.4.21.46 C53A does not bind to the soluble receptor VEGFR-2/IgGFc 698902 3.4.21.46 G51C can not induce cell survival, has increased dimer to monomer ratio 698902 3.4.21.46 H133A catalytically inactive 718398 3.4.21.46 P43S can not induce cell survival 698902 3.4.21.46 R115C activity like wild type 718398 3.4.21.46 R157A catalytically inactive 718398 3.4.21.46 R202A putative interaction with Glu230 in factor B, cleavage of factor B reduced to 20%, activity against peptides threefold increased 718398 3.4.21.46 R202A site-directed mutagenesis, the mutation R202A removes the Arg202-Asp177 salt bridge, the mutant variant has enhanced activity towards artificial peptides compared to the wild-type enzyme and simultaneously displays active and inactive conformations of the active site. Ensemble refinement reveals pronounced disorder in the exosite loops for this enzyme variant, reminiscent of thrombin in the absence of the stabilizing Na+ ion, structure analysis 731071 3.4.21.46 R22I can not induce cell survival 698902 3.4.21.46 R22I/C25L has biological activity comparable to that of the native protein in Ba/F3-VEGFR-2 cells, has increased dimer to monomer ratio 698902 3.4.21.46 R22L can not induce cell survival 698902 3.4.21.46 R22L/C25L has biological activity comparable to that of the native protein in Ba/F3-VEGFR-2 cells, has increased dimer to monomer ratio 698902 3.4.21.46 S183A catalytically inactive 718398 3.4.21.46 S183A site-directed mutagenesis, structure analysis 731071 3.4.21.46 S81Y/T198S/S199W site-directed mutagenesis, the mutation causes steric hindrance of Trp199 resulting in pronounced rearrangement of the proteinase active-site region, structure analysis 731071 3.4.21.46 S94Y 6fold increase in turnover number 36587 3.4.21.46 S94Y/T214/S215W the triple mutant has a turnover number that is 16fold higher than that of wild type factor D 36587 3.4.21.46 T214S/S215W more than 16fold incerease of the ratio of turnover number/KM-value 36587 3.4.21.46 T638G factor D deficient mutant 668074 3.4.21.46 T640C factor D deficient mutant 668074 3.4.21.46 V203D very low activity 718398