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. Author manuscript; available in PMC: 2013 Oct 30.
Published in final edited form as: Biochemistry. 2012 Oct 15;51(43):8690–8697. doi: 10.1021/bi3011434

Table 3.

pKa Values for Wild-type Fmsl and the D94N and N195A Enzymesa

enzyme eq kinetic parameter pK1 pK2
wild-type Fms1b 1 kcat/Kamine 8.3 ± 0.1 9.6 ± 0.1
2 k cat 7.7 ± 0.1
N195A 1 kcat/Kamine 8.1 ± 0.1 9.4 ± 0.2
2 k cat 9.0 ± 0.1
D94N 1 kcat/Kamine 8.7 ± 0.1 8.7 ± 0.1
2 k cat 8.4 ± 0.1
a

Conditions: N1-acetylspermine as a substrate, 25 °C.

b

From ref. (13).