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Deprecated: Implicit conversion from float 235.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 iScience 2021 ; 24 (4): 102370 Nephropedia Template TP
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Identification and mechanistic analysis of an inhibitor of the CorC Mg(2+) transporter #MMPMID33912817
Huang Y; Mu K; Teng X; Zhao Y; Funato Y; Miki H; Zhu W; Xu Z; Hattori M
iScience 2021[Apr]; 24 (4): 102370 PMID33912817show ga
The CorC/CNNM family of Na(+)-dependent Mg(2+) transporters is ubiquitously conserved from bacteria to humans. CorC, the bacterial CorC/CNNM family of proteins, is involved in resistance to antibiotic exposure and in the survival of pathogenic microorganisms in their host environment. The CorC/CNNM family proteins possess a cytoplasmic region containing the regulatory ATP-binding site. CorC and CNNM have attracted interest as therapeutic targets, whereas inhibitors targeting the ATP-binding site have not been identified. Here, we performed a virtual screening of CorC by targeting its ATP-binding site, identified a compound named IGN95a with inhibitory effects on ATP binding and Mg(2+) export, and determined the cytoplasmic domain structure in complex with IGN95a. Furthermore, a chemical cross-linking experiment indicated that with ATP bound to the cytoplasmic domain, the conformational equilibrium of CorC was shifted more toward the inward-facing state of the transmembrane domain. In contrast, IGN95a did not induce such a shift.