Protein: E3 ubiquitin-protein ligase MGRN1 (EC 2.3.2.27) (Mahogunin RING finger protein 1) (RING finger protein 156) (RING-type E3 ubiquitin transferase MGRN1) (O60291)
Organism: Homo sapiens (Human)
Function: E3 ubiquitin-protein ligase. Mediates monoubiquitination at multiple sites of TSG101 in the presence of UBE2D1, but not of UBE2G1, nor UBE2H. Plays a role in the regulation of endosome-to-lysosome trafficking. Impairs MC1R- and MC4R-signaling by competing with GNAS-binding to MCRs and inhibiting agonist-induced cAMP production. Does not inhibit ADRB2-signaling. Does not promote MC1R ubiquitination. Acts also as a negative regulator of hedgehog signaling (By similarity).
Subcellular location: Early endosome {ECO:0000269|PubMed:17229889, ECO:0000269|PubMed:19737927}. Note=The endosomal localization is dependent on the interaction with TSG101.; SUBCELLULAR LOCATION: [Isoform 1]: Cytoplasm, cytosol. Nucleus. Note=Translocation from the cytosol to the nucleus is seen only in the presence of MC1R and MC4R, but not TBXA2R. Excluded from nucleoli.; SUBCELLULAR LOCATION: [Isoform 2]: Cytoplasm, cytosol. Nucleus. Note=Translocation from the cytosol to the nucleus is seen only in the presence of MC1R and MC4R, but not TBXA2R. Excluded from nucleoli.; SUBCELLULAR LOCATION: [Isoform 3]: Cytoplasm, cytosol. Cell membrane.; SUBCELLULAR LOCATION: [Isoform 4]: Cytoplasm, cytosol. Cell membrane.
Sequence: MGSILSRRIAGVEDIDIQANSAYRYPPKSGNYFASHFFMGGEKFDTPHPEGYLFGENMDLNFLGSRPVQFPYVTPAPHEPVKTLRSLVNIRKDSLRLVRYKDDADSPTEDGDKPRVLYSLEFTFDADARVAITIYCQASEEFLNGRAVYSPKSPSLQSETVHYKRGVSQQFSLPSFKIDFSEWKDDELNFDLDRGVFPVVIQAVVDEGDVVEVTGHAHVLLAAFEKHMDGSFSVKPLKQKQIVDRVSYLLQEIYGIENKNNQETKPSDDENSDNSNECVVCLSDLRDTLILPCRHLCLCTSCADTLRYQANNCPICRLPFRALLQIRAVRKKPGALSPVSFSPVLAQSLEHDEHSCPFKKSKPHPASLASKKPKRETNSDSVPPGYEPISLLEALNGLRAVSPAIPSAPLYEEITYSGISDGLSQASCPLAAIDHILDSSRQKGRPQSKAPDSTLRSPSSPIHEEDEEKLSEDVDAPPPLGGAELALRESSSPESFITEEVDESSSPQQGTRAASIENVLQDSSPEHCGRGPPADIYLPALGPDSCSVGIDE
InterPro domains: - IPR013083: Zinc finger, RING/FYVE/PHD-type (homologous_superfamily) [254-327]
- IPR045194: E3 ubiquitin-protein ligase MGRN1/RNF157-like (family) [1-344]
- IPR001841: Zinc finger, RING-type (domain) [278-317]
Interaction partners: - Attractin
- Multiple epidermal growth factor-like domains protein 8
- Protein smoothened
- Melanocyte-stimulating hormone receptor
- Tumor susceptibility gene 101 protein
- Ankyrin repeat domain-containing protein 46
- E3 ubiquitin-protein ligase AMFR
- Ubiquitin-conjugating enzyme E2 R1
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0003824 (catalytic activity), GO:0016740 (transferase activity), GO:0140096 (catalytic activity, acting on a protein), GO:0005515 (protein binding), GO:0019787 (ubiquitin-like protein transferase activity), GO:0004842 (ubiquitin-protein transferase activity), GO:0061659 (ubiquitin-like protein ligase activity), GO:0061630 (ubiquitin protein ligase activity)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0044238 (primary metabolic process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0009056 (catabolic process), GO:0006807 (nitrogen compound metabolic process), GO:1901564 (organonitrogen compound metabolic process), GO:0019538 (protein metabolic process), GO:1901575 (organic substance catabolic process), GO:0044260 (cellular macromolecule metabolic process), GO:0043170 (macromolecule metabolic process), GO:0044248 (cellular catabolic process), GO:0009057 (macromolecule catabolic process), GO:1901565 (organonitrogen compound catabolic process), GO:0006508 (proteolysis), GO:0044265 (cellular macromolecule catabolic process), GO:0030163 (protein catabolic process), GO:0043632 (modification-dependent macromolecule catabolic process), GO:0051603 (proteolysis involved in protein catabolic process), GO:0019941 (modification-dependent protein catabolic process), GO:0006511 (ubiquitin-dependent protein catabolic process)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0016020 (membrane), GO:0005737 (cytoplasm), GO:0071944 (cell periphery), GO:0012505 (endomembrane system), GO:0005794 (Golgi apparatus), GO:0031410 (cytoplasmic vesicle), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0005886 (plasma membrane), GO:0043231 (intracellular membrane-bounded organelle), GO:0031982 (vesicle), GO:0097708 (intracellular vesicle)