Abstract
Anabaenopeptins isolated from cyanobacteria were identified as inhibitors of carboxypeptidase TAFIa. Cocrystal structures of these macrocyclic natural product inhibitors in a modified porcine carboxypeptidase B revealed their binding mode and provided the basis for the rational design of small molecule inhibitors with a previously unknown central urea motif. Optimization based on these design concepts allowed for a rapid evaluation of the SAR and delivered potent small molecule inhibitors of TAFIa with a promising overall profile.
MeSH terms
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Animals
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Biological Products / chemistry
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Biological Products / pharmacology*
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Carboxypeptidase B2 / antagonists & inhibitors*
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Cells, Cultured
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Crystallography, X-Ray
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Cyanobacteria / chemistry
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Fibrinolysis / drug effects*
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Humans
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Mice
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Microsomes / drug effects*
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Models, Molecular
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Molecular Structure
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Peptides, Cyclic / chemistry
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Peptides, Cyclic / pharmacology*
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Rats
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Small Molecule Libraries / chemistry
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Small Molecule Libraries / pharmacology*
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Structure-Activity Relationship
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Swine
Substances
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Biological Products
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Peptides, Cyclic
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Small Molecule Libraries
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Carboxypeptidase B2