Systematic in silico discovery of novel solute carrier-like proteins from proteomes

Gyimesi, Gergely; Hediger, Matthias A. (2021). Systematic in silico discovery of novel solute carrier-like proteins from proteomes (In Press) (bioRxiv). Cold Spring Harbor Laboratory 10.1101/2021.11.19.469292

2021.11.19.469292v1.full.pdf - Published Version
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Solute carrier (SLC) proteins represent the largest superfamily of transmembrane transporters, the systematic analysis of which is hampered by their functional and structural heterogeneity, despite their biological importance. Based on available nomenclature systems, we suspected that many as yet unidentified SLC transporters exist in the human genome. Here, we present criteria for defining “SLC-likeness” and apply them to curate a set of “SLC-like” protein families from the Transporter Classification Database (TCDB) and Protein families (Pfam) databases. Computational sequence similarity searches then surprisingly yielded ∼130 more proteins in human with SLC-like properties, compared to previous annotations. Several of these novel putative SLC transporter proteins actually have documented transport activity in the scientific literature. We complete our overview of the SLC-ome by presenting an algorithm to classify SLC-like proteins into protein families, investigating their known functions and evolutionary relationships to similar proteins from 6 other clinically relevant experimental organisms, and pinpointing structural orphans. We envision that our work will serve as a stepping stone for future studies of the biological function and the identification of the natural substrates of the many under-explored SLC transporters, as well as the development of new therapeutic applications, including strategies for personalized medicine and drug delivery.

Item Type:

Working Paper


04 Faculty of Medicine > Department of Dermatology, Urology, Rheumatology, Nephrology, Osteoporosis (DURN) > Clinic of Nephrology and Hypertension
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > Unit Childrens Hospital > Forschungsgruppe Nephrologie / Hypertonie

UniBE Contributor:

Gyimesi, Gergely and Hediger, Matthias


500 Science > 570 Life sciences; biology
600 Technology > 610 Medicine & health




Cold Spring Harbor Laboratory




Verena de Serra Frazao-Bill

Date Deposited:

19 Jan 2022 11:28

Last Modified:

19 Jan 2022 11:28

Publisher DOI:





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