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. 2003 Dec 12;100(26):16101–16106. doi: 10.1073/pnas.0307162100

Table 2. Specificity of SA-binding activity of recombinant SABP2.

Assay Bound [3H]SA, dpm Biological activity of competitor
rSABP2 + no competitor 140,206 —
rSABP2 + 1 mM unlabeled SA 160 Active
rSABP2 + 1 mM unlabeled 5-CSA 260 Active
rSABP2 + 1 mM unlabeled 2,6-DHBA 924 Active
rSABP2 + 1 mM unlabeled 2,5-DHBA 90,839 Inactive
rSABP2 + 1 mM unlabeled 4-HBA 95,634 Inactive

5-CSA, 5-chlorosalicylic acid; 2,6-DHBA, 2,6-dihydroxybenzoic acid; 2,5-DHBA, 2,5-dihydroxybenzoic acid; 4-HBA, 4-hydroxybenzoic acid.