Protein: Protein EFR3 homolog B (Q9Y2G0)
Organism: Homo sapiens (Human)
Function: Component of a complex required to localize phosphatidylinositol 4-kinase (PI4K) to the plasma membrane. The complex acts as a regulator of phosphatidylinositol 4-phosphate (PtdIns(4)P) synthesis (Probable). In the complex, EFR3B probably acts as the membrane-anchoring component. Also involved in responsiveness to G-protein-coupled receptors; it is however unclear whether this role is direct or indirect.
Subcellular location: Cell membrane {ECO:0000269|PubMed:23229899, ECO:0000269|PubMed:25380825}; Lipid-anchor {ECO:0000269|PubMed:23229899, ECO:0000269|PubMed:25380825}. Cytoplasm, cytosol {ECO:0000269|PubMed:25380825}. Note=Palmitoylation anchors the protein to the plasma membrane (PubMed:23229899, PubMed:25380825). A small amount is observed in the cytosol (PubMed:25380825). {ECO:0000269|PubMed:23229899, ECO:0000269|PubMed:25380825}.
Sequence: MYGVCGCCGALRPRYKRLVDNIFPEDPEDGLVKTNMEKLTFYALSAPEKLDRIGAYLSERLIRDVGRHRYGYVCIAMEALDQLLMACHCQSINLFVESFLKMVAKLLESEKPNLQILGTNSFVKFANIEEDTPSYHRSYDFFVSRFSEMCHSSHDDLEIKTKIRMSGIKGLQGVVRKTVNDELQANIWDPQHMDKIVPSLLFNLQHVEEAESRSPSPLQAPEKEKESPAELAERCLRELLGRAAFGNIKNAIKPVLIHLDNHSLWEPKVFAIRCFKIIMYSIQPQHSHLVIQQLLGHLDANSRSAATVRAGIVEVLSEAAVIAATGSVGPTVLEMFNTLLRQLRLSIDYALTGSYDGAVSLGTKIIKEHEERMFQEAVIKTVGSFASTLPTYQRSEVILFIMSKVPRPSLHQAVDTGRTGENRNRLTQIMLLKSLLQVSTGFQCNNMMSALPSNFLDRLLSTALMEDAEIRLFVLEILISFIDRHGNRHKFSTISTLSDISVLKLKVDKCSRQDTVFMKKHSQQLYRHIYLSCKEETNVQKHYEALYGLLALISIELANEEVVVDLIRLVLAVQDVAQVNEENLPVYNRCALYALGAAYLNLISQLTTVPAFCQHIHEVIETRKKEAPYMLPEDVFVERPRLSQNLDGVVIELLFRQSKISEVLGGSGYNSDRLCLPYIPQLTDEDRLSKRRSIGETISLQVEVESRNSPEKEERVPAEEITYETLKKAIVDSVAVEEQERERRRQVVEKFQKAPFEEIAAHCGARASLLQSKLNQIFEITIRPPPSPSGTITAAYGQPQNHSIPVYEMKFPDLCVY
InterPro domains: - IPR016024: Armadillo-type fold (homologous_superfamily) [15-489]
- IPR049152: EFR3-like, armadillo repeat (repeat) [47-143]
- IPR051851: EFR3 Homologs (family) [1-817]
- IPR011989: Armadillo-like helical (homologous_superfamily) [161-500]
Interaction partners: - Tetratricopeptide repeat protein 7B
- Tetratricopeptide repeat protein 7A
- Phosphatidylinositol 4-kinase alpha
- Hyccin
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0051179 (localization), GO:0051641 (cellular localization), GO:0009058 (biosynthetic process), GO:0044238 (primary metabolic process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0033036 (macromolecule localization), GO:0044255 (cellular lipid metabolic process), GO:0070727 (cellular macromolecule localization), GO:0044249 (cellular biosynthetic process), GO:1901576 (organic substance biosynthetic process), GO:0006629 (lipid metabolic process), GO:0051668 (localization within membrane), GO:0019637 (organophosphate metabolic process), GO:0006793 (phosphorus metabolic process), GO:0006796 (phosphate-containing compound metabolic process), GO:0072657 (protein localization to membrane), GO:0008104 (protein localization), GO:0046486 (glycerolipid metabolic process), GO:0008610 (lipid biosynthetic process), GO:0006644 (phospholipid metabolic process), GO:0045017 (glycerolipid biosynthetic process), GO:0090407 (organophosphate biosynthetic process), GO:0006650 (glycerophospholipid metabolic process), GO:0046474 (glycerophospholipid biosynthetic process), GO:0008654 (phospholipid biosynthetic process), GO:1990778 (protein localization to cell periphery), GO:0072659 (protein localization to plasma membrane), GO:0006661 (phosphatidylinositol biosynthetic process), GO:0046488 (phosphatidylinositol metabolic process), GO:0046854 (phosphatidylinositol phosphate biosynthetic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005829 (cytosol), GO:0005622 (intracellular anatomical structure), GO:0071944 (cell periphery), GO:0005737 (cytoplasm), GO:0016020 (membrane), GO:0005886 (plasma membrane)