Recombinant Human E3 ubiquitin-protein ligase MGRN1 (MGRN1)

Uniprot Id

O60291

Target Species

Human

Target Name

MGRN1

Target Full Name

E3 ubiquitin-protein ligase MGRN1

Target 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.

Target Subcellular Location

Early endosome. Note=The endosomal localization is dependent on the interaction with TSG101.; [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.; [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.; [Isoform 3]: Cytoplasm, cytosol. Cell membrane.; [Isoform 4]: Cytoplasm, cytosol. Cell membrane.

Target Synonyms

E3 ubiquitin-protein ligase MGRN1; KIAA0544; Mahogunin ring finger 1; Mahogunin RING finger protein 1; MGRN 1; Mgrn1; MGRN1_HUMAN; Probable E3 ubiquitin protein ligase MGRN1; RING finger protein 156; RNF 156; RNF156

Target Background

Enables ubiquitin-protein transferase activity. Involved in endosome to lysosome transport; negative regulation of signal transduction; and protein monoubiquitination. Located in several cellular components, including early endosome; endoplasmic reticulum; and nucleus.