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FLASH GENE
Symbol UBE4B contributors: mct - updated : 23-04-2012
HGNC name ubiquitination factor E4B (UFD2 homolog, yeast)
HGNC id 12500
DNA
TYPE functioning gene
STRUCTURE 148.28 kb     28 Exon(s)
Genomic sequence alignment details
10 Kb 5' upstream gene genomic sequence study
MAPPING cloned Y linked N status provisional
RNA
TRANSCRIPTS type messenger
identificationnb exonstypebpproduct
ProteinkDaAAspecific expressionYearPubmed
27 - 5503 133 1173 - 2006 16870146
  • N-terminal MPAC domain, which is regulated both by cleavage during cell death, and by phosphorylation during mitosis
  • at the C-terminus polyA polymerase (PAP) domain, which is similarly regulated by phosphorylation during mitosis and is delineated by an apoptotic protease cleavage site
  • 28 - 5890 146 1302 - 2006 16870146
    EXPRESSION
    Type
    constitutive of
       expressed in (based on citations)
    organ(s)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Cardiovascularheart   highly
    Digestiveintestinelarge intestinecolon lowly
    Lymphoid/Immunethymus   lowly
    Nervousbrainmidbrainsubstantia nigra  
    Reproductivefemale systemovary  highly
     male systemtestis  highly
    tissue
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    Muscularstriatumskeletal  
    cells
    SystemCellPubmedSpeciesStageRna symbol
    Blood/Hematopoieticleukocyte
    cell lineage
    cell lines
    fluid/secretion
    at STAGE
    physiological period embryo
    Text stem cells
    PROTEIN
    PHYSICAL PROPERTIES
    STRUCTURE
    motifs/domains
  • an U-box domain
  • mono polymer heteromer
    HOMOLOGY
    interspecies homolog to yeast Ufd2
    homolog to Drosophila Nosa
    homolog to murine Ube4b
    Homologene
    FAMILY
  • ubiquitin conjugation factor E4 family
  • CATEGORY chaperone/stress , enzyme
    SUBCELLULAR LOCALIZATION     intracellular
    intracellular,cytoplasm
    basic FUNCTION
  • involved in multi-ubiquitination chain assembly with E1, E2, E3
  • might play an important role in the regulation of cisplatin mediated cell death mediated by TP63
  • U box-containing protein that functions as an E3 ubiquitin ligase and an E4 polyubiquitin chain elongation factor
  • promotes TP53 polyubiquitination and degradation and inhibits TP53-dependent transactivation and apoptosis
  • negatively regulates the level of TP53 and inhibits TP53-dependent transactivation and apoptosis
  • U-box-containing ubiquitylation enzyme that promotes ubiquitin chain assembly on substrates
  • CELLULAR PROCESS cell cycle
    protein, post translation
    PHYSIOLOGICAL PROCESS
    PATHWAY
    metabolism
    signaling
    a component
    INTERACTION
    DNA
    RNA
    small molecule
    protein
  • interacting with, and thereby mediated poly-ubiquitylation of ATXN3
  • E3 and E4 ubiquitin ligase, that physically interacts with TP53 and MDM2
  • E3 and E4 ubiquitin ligase with a U-box domain, interacting physically with both TP53 and MDM2
  • TTK is a target of the UBE4B enzyme (UBE4B-mediated TTK degradation is conserved in humans and is important for mitotic progression)
  • cell & other
    REGULATION
    Other proteolytically cleaved by caspases during apoptosis
    ASSOCIATED DISORDERS
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    tumoral   amplification --over  
    amplification and overexpression of UBE4B represent previously undescribed molecular mechanisms of inactivation of TP53 in brain tumors
    Susceptibility
    Variant & Polymorphism
    Candidate gene targeted expression of UBE4Bis a potential gene therapy for MJD
    Marker
    Therapy target
    ANIMAL & CELL MODELS