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Overview

Uniprot IDQ9BWM7
Protein NameSideroflexin-3
Gene NameSFXN3
OrganismHomo sapiens

Kla Sites from experimental identification

Position Flanking peptide
71 EDQLWRAKYVYDSAF

Function

Mitochondrial serine transporter that mediates transport of serine into mitochondria, an important step of the one-carbon metabolism pathway (PubMed:30442778). Mitochondrial serine is converted to glycine and formate, which then exits to the cytosol where it is used to generate the charged folates that serve as one-carbon donors (PubMed:30442778)

Protein Sequence

10 MGELPLDINI 20 QEPRWDQSTF 30 LGRARHFFTV 40 TDPRNLLLSG 50 AQLEASRNIV 60 QNYRAGVVTP 70 GITEDQLWRA 80 KYVYDSAFHP 90 DTGEKVVLIG 100 RMSAQVPMNM 110 TITGCMLTFY 120 RKTPTVVFWQ 130 WVNQSFNAIV 140 NYSNRSGDTP 150 ITVRQLGTAY 160 VSATTGAVAT 170 ALGLKSLTKH 180 LPPLVGRFVP 190 FAAVAAANCI 200 NIPLMRQREL 210 QVGIPVADEA 220 GQRLGYSVTA 230 AKQGIFQVVI 240 SRICMAIPAM 250 AIPPLIMDTL 260 EKKDFLKRRP 270 WLGAPLQVGL 280 VGFCLVFATP 290 LCCALFPQKS 300 SIHISNLEPE 310 LRAQIHEQNP 320 SVEVVYYNKG L

Gene Ontology

Classification GO ID Description
Cellular Component GO:0005743 mitochondrial inner membrane
Cellular Component GO:0005739 mitochondrion
Molecular Function GO:0015194 L-serine transmembrane transporter activity
Molecular Function GO:0015075 monoatomic ion transmembrane transporter activity
Molecular Function GO:0022857 transmembrane transporter activity
Biological Process GO:1990542 mitochondrial transmembrane transport
Biological Process GO:0006730 one-carbon metabolic process
Biological Process GO:0140300 serine import into mitochondrion

Reference

[1] Yang Z, Yan C, Ma J, Peng P, Ren X et al.. Lactylome analysis suggests lactylation-dependent mechanisms of metabolic adaptation in hepatocellular carcinoma.. Nat Metab 5(1):61-79. 2023 Jan. PMID: 36593272.