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Overview

Uniprot IDA0A287A7D8
Protein NameCoatomer subunit epsilon
Gene NameCOPE
OrganismSus scrofa

Kla Sites from experimental identification

Position Flanking peptide
227 NRYLSQLKDAHRTHP
242 FIKEYHAKENDFDRL

Function

The coatomer is a cytosolic protein complex that binds to dilysine motifs and reversibly associates with Golgi non-clathrin-coated vesicles, which further mediate biosynthetic protein transport from the ER, via the Golgi up to the trans Golgi network. The coatomer complex is required for budding from Golgi membranes, and is essential for the retrograde Golgi-to-ER transport of dilysine-tagged proteins. In mammals, the coatomer can only be recruited by membranes associated with ADP-ribosylation factors (ARFs), which are small GTP-binding proteins; the complex also influences the Golgi structural integrity, as well as the processing, activity, and endocytic recycling of LDL receptors

Protein Sequence

10 MAPPAPGPAS 20 GGSGEVDELF 30 DVKNAFYIGS 40 YQQCINEAQR 50 VKPSSPERDV 60 ERDVFLYRAY 70 LAQRKFGVVL 80 DEIKPSSAPE 90 LQAIRMFAEY 100 LASDSRRMAM 110 TVQILLKLDR 120 LDLARKELKK 130 MQDQDEDATL 140 TQLATAWVNL 150 AVGGEKLQDA 160 YYIFQEMADK 170 CSSTLLLLNG 180 QAACHMAQGR 190 WEAAEGVLQE 200 ALDKDSSHPE 210 TLINLIVLSQ 220 HLGKPPEVTN 230 RYLSQLKDAH 240 RTHPFIKEYH 250 AKENDFDRLV LQYAPSA

Gene Ontology

Classification GO ID Description
Cellular Component GO:0030663 COPI-coated vesicle membrane
Cellular Component GO:0000139 Golgi membrane
Molecular Function GO:0005198 structural molecule activity
Biological Process GO:0015031 protein transport
Biological Process GO:0006890 retrograde vesicle-mediated transport, Golgi to endoplasmic reticulum

Reference

[1] Fan S, Zhou R, Wen H, Ye H, Ma S et al.. Global profiling of protein lactylome in porcine granulosa cells.. J Ovarian Res 18(1):177. 2025 Aug 8. PMID: 40781717.