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. 2015 May 6;10(5):e0126669. doi: 10.1371/journal.pone.0126669

Fig 4. Relationship between hydrogen (H-) bond acceptor/donor numbers and bufadienolide binding affinities for human serum albumin (HSA).

Fig 4

The H-bond acceptor/donor numbers were taken from the PubChem Public Chemical Database. logKa = binding affinity; Ka = binding constant; and R = correlation coefficient.