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. Author manuscript; available in PMC: 2011 Sep 23.
Published in final edited form as: J Med Chem. 2010 Sep 23;53(18):6747–6757. doi: 10.1021/jm100592u

Table 2.

Competitive Binding Study for Compounds 1, 2, and 5a.a

Inhibitor Concentration (mM)
Compound Inhibitor 0.0 0.5 1.0 2.0
KA (mM−1)

1 homocysteine 5.0 ± 1.5 2.0 ± 0.12 1.5 ± 0.2 0.87 ± 0.05
2 homocysteine 64 ± 16 17 ± 2.2 6.1 ± 0.54 3.6 ± 0.23
5a homocysteine 22 ± 1.4 11 ± 3.4 6.6 ± 2.7 3.4 ± 0.84
5a 5b 22 ± 1.4 6.2 ± 1.2 3.0 ± 0.91 ~ 0
a

Measured at 37°C.