4.6.1.18 additional information - enzymatic activities of the various RNase A monomeric and zero-length or domain-swapped oligomeric species on single-stranded yeast or double-stranded poly(A)-poly(U) RNA, overview. The dimers show higher activity compared to the monomners 717298 4.6.1.18 additional information - for assay conditions ribonuclease A solution prepared by dissolving 8 mg ribonuclease A in 4 ml 0.1 M NaHCO3 at pH 9.5 following by pre-cooling to 3°C 678356 4.6.1.18 additional information - isoenzyme D-I shows values of 88 U/mg, 382 U/mg and 6.2 U/mg with yeast RNA, poly(U) and poly(A)poly(U) as substrates, respectively. D-II isoenzyme shows values of 85 U/mg, 387 U/mg and 2.5 U/mg with yeast RNA, poly(U) and poly(A)poly(U) as substrates, respectively 655538 4.6.1.18 additional information - type I isoform, 100% specific activity relative to commercial RNase A. Type II isoform, 53% specific activity relative to commercial enzyme 654993 4.6.1.18 0.017 - pH 5.0, 37°C 654814 4.6.1.18 1.14 - substrate poly(A)poly(U), dimethyl suberimidate-treated, monomeric RNase A, pH 7.0, 25°C 678502 4.6.1.18 1.55 - substrate poly(A)poly(U), native, monomeric RNase A, pH 7.0, 25°C 678502 4.6.1.18 2.22 - substrate poly(A)poly(U), cross-linked RNase A dimer, pH 7.0, 25°C 678502 4.6.1.18 3 - enzyme monomer after lyophilization 681511 4.6.1.18 3.52 - pH 7.0, 65°C 677904