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Structure-Based Identification of Inhibitors for the SLC13 Family of Na(+)/Dicarboxylate Cotransporters.

Abstract：

:In mammals, citric acid cycle intermediates play a key role in regulating various metabolic processes, such as fatty acid synthesis and glycolysis. Members of the sodium-dependent SLC13 transporter family mediate the transport of di- and tricarboxylates into cells. SLC13 family members have been implicated in lifespan extension and resistance to high-fat diets; thus, they are emerging drug targets for aging and metabolic disorders. We previously characterized key structural determinants of substrate and cation binding for the human NaDC3/SLC13A3 transporter using a homology model. Here, we combine computational modeling and virtual screening with functional and biochemical testing, to identify nine previously unknown inhibitors for multiple members of the SLC13 family from human and mouse. Our results reveal previously unknown substrate selectivity determinants for the SLC13 family, including key residues that mediate ligand binding and transport, as well as promiscuous and specific SLC13 small molecule ligands. The newly discovered ligands can serve as chemical tools for further characterization of the SLC13 family or as lead molecules for the future development of potent inhibitors for the treatment of metabolic diseases and aging. Our results improve our understanding of the structural components that are important for substrate specificity in this physiologically important family as well as in other structurally related transport systems.

journal_name

Biochemistry

journal_title

Biochemistry

authors

Colas C,Pajor AM,Schlessinger A

doi

10.1021/acs.biochem.5b00388

subject

Has Abstract

pub_date

2015-08-11 00:00:00

pages

4900-8

issue

31

eissn

0006-2960

issn

1520-4995

journal_volume

54

pub_type

杂志文章

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