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1st scenario

presents the common SAR task when the program predicts protein targets for the query ligand by comparing with chemical structures of compounds with known target spectra.

Ligand-based prediction
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2nd scenario

searches the small molecule ligands for the test protein by comparing the amino acid sequences with known ligands. Ligands’ structures are not considered.

Sequence-based prediction
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3rd scenario

is applied in the absence of the information on interaction spectra of both the target and ligand. The predictive algorithm requires the protein sequence and ligand structure.

Proteochemometrics