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• W2890690413 abstract "The cAMP signaling system plays important roles in the physiological processes of pathogen yeast Candida albicans, but its functional mechanism has not been well illustrated. Here, we report the enzymatic characterization and crystal structures of C. albicans phosphodiesterase 2 (caPDE2) in the unliganded and 3-isobutyl-1-methylxanthine-complexed forms. caPDE2 is a monomer in liquid and crystal states and specifically hydrolyzes cAMP with a KM of 35 nM. It does not effectively hydrolyze cGMP as shown by the 1.32 × 105-fold specificity of cAMP/cGMP. The crystal structure of caPDE2 shows significant differences from those of human PDEs. First, the N-terminal fragment of caPDE2 (residues 1-201) tightly associates with the catalytic domain to form a rigid molecular entity, implying its stable molecular conformation for C. albicans to resist environmental stresses. Second, the M-loop, a critical fragment for binding of the substrate and inhibitors to human PDEs, is not a part of the caPDE2 active site. This feature of caPDE2 may provide a structural basis for the design of selective inhibitors for the treatment of yeast infection." @default.
• W2890690413 created "2018-09-27" @default.
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• W2890690413 date "2018-09-19" @default.
• W2890690413 modified "2023-10-08" @default.
• W2890690413 title "Crystal Structures of Candida albicans Phosphodiesterase 2 and Implications for Its Biological Functions" @default.
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• W2890690413 doi "https://doi.org/10.1021/acs.biochem.8b00707" @default.
• W2890690413 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30231198" @default.
• W2890690413 hasPublicationYear "2018" @default.
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