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MIB1 E3 ubiquitin-protein ligase that mediates ubiquitination of Delta receptors, which act as ligands of Notch proteins. Positively regulates the Delta-mediated Notch signaling by ubiquitinating the intracellular domain of Delta, leading to endocytosis of Delta receptors. Probably mediates ubiquitination and subsequent proteasomal degradation of DAPK1, thereby antagonizing anti-apoptotic effects of DAPK1 to promote TNF- induced apoptosis. Mediates 'Lys-63'-linked polyubiquitination of TBK1, which probably participates in kinase activation. Widely expressed at low level. Expressed at higher level in spinal cord, ovary, whole brain, and all specific brain regions examined. Note: This description may include information from UniProtKB.
Protein type: EC 6.3.2.-; EC; Ligase; Ubiquitin conjugating system; Ubiquitin ligase
Chromosomal Location of Human Ortholog: 18q11.2
Cellular Component: centrosome; cytoplasm; cytosol
Molecular Function: protein binding; ubiquitin-protein ligase activity
Biological Process: endocytosis; Notch signaling pathway
Disease: Left Ventricular Noncompaction 7
Reference #:  Q86YT6 (UniProtKB)
Alt. Names/Synonyms: DAPK-interacting protein 1; DIP-1; DIP1; DKFZp686I0769; DKFZp761M1710; E3 ubiquitin-protein ligase MIB1; FLJ90676; KIAA1323; MGC129659; MGC129660; MIB; MIB1; Mind bomb homolog 1; mindbomb homolog 1 (Drosophila); ubiquitin ligase mind bomb; ubiquitin ligase protein MIB1; Zinc finger ZZ type with ankyrin repeat domain protein 2; ZZANK2; ZZZ6
Gene Symbols: MIB1
Molecular weight: 110,136 Da
Basal Isoelectric point: 6.47  Predict pI for various phosphorylation states
CST Pathways:  Notch Signaling
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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