Selected-GenAtlas references SOURCE GeneCards NCBI Gene Swiss-Prot Orphanet Ensembl
HGNC UniGene Nucleotide OMIM UCSC
Home Page
FLASH GENE
Symbol ARFGEF2 contributors: mct - updated : 09-04-2014
HGNC name ADP-ribosylation factor guanine nucleotide-exchange factor 2 (brefeldin A-inhibited)
HGNC id 15853
PROTEIN
PHYSICAL PROPERTIES
STRUCTURE
motifs/domains
  • C-terminal motif within Sec7 domain of guanine nucleotide exchange factors regulates ADP-ribosylation factor (ARF) binding and activation
  • HOMOLOGY
    interspecies homolog to Drosophila CG7187
    intraspecies homolog to BIG1
    Homologene
    FAMILY
    CATEGORY regulatory , transport
    SUBCELLULAR LOCALIZATION     intracellular
    intracellular,cytoplasm,organelle,membrane
    intracellular,cytoplasm,organelle,Golgi
    intracellular,cytoplasm,organelle,endosome
    intracellular,cytoplasm,cytosolic,vesicle
    text
  • colocalizing with COPB1 in a perinuclear structure probably with Golgi membranes
  • GBF1 acts at the cis-Golgi, whereas ARFGEF1 and its close paralog ARFGEF2 act at the trans-Golgi
  • basic FUNCTION
  • playing an important role in vesicular and membrane trafficking from the trans-golgi network
  • involved in the activation of ARFs (ARF1, ARF5 and ARF6) by accelerating replacement of bound GDP with GTP
  • activator of ADP-ribosylation factor GTPases that are essential for regulating vesicular traffic among intracellular organelles
  • ARFGEF1, ARFGEF2 play redundant roles in trafficking between the TGN and endosomes that involves the AP-1 complex
  • ARFGEF1 is required to maintain the normal morphology of the Golgi but ARFGEF2 is important for endosomal compartment integrity and cannot replace the function of ARFGEF1 in Golgi organization
  • alone or in concert with recruited MYCBP coordinates ARF-mediated membrane trafficking and signaling pathways
  • may coordinate actin cytoskeleton mechanics and membrane traffic in cell migration via ITGB1 action and actin functions
  • involved in the activation of ARFs by accelerating replacement of bound guanosine diphosphate (GDP) with Guanosine triphosphate (GTP), and is involved in Golgi transport
  • Arf guanine nucleotide-exchange factors ARFGEF1, ARFGEF2 and regulate nonmuscle myosin IIA activity by anchoring myosin phosphatase complex
  • CELLULAR PROCESS
    PHYSIOLOGICAL PROCESS exocytosis transport , cellular trafficking transport
    text Golgi transport
    PATHWAY
    metabolism
    signaling
    a component
  • component with BIG1 of a macromolecular complex
  • INTERACTION
    DNA
    RNA
    small molecule
    protein
  • interacting with EXOC7 in trans-golgi network and centrosome
  • ARL1 is necessary for Golgi recruitment of ARFGEF1 and ARFGEF2 but not GBF1
  • regulates filamin A phosphorylation and neuronal migration
  • GBF1-activated ARFs (ARF4 and ARF5, but not ARF3) facilitate ARFGEF1 and ARFGEF2 recruitment to the trans-Golgi network (TGN)
  • FLNA regulates neuronal migration through ARFGEF2-dependent ARF1 activation
  • cell & other
    REGULATION
    inhibited by brefeldin A
    ASSOCIATED DISORDERS
    corresponding disease(s) ARPHM
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    constitutional     --over  
    significantly up-regulated in the Huntington disease
    Susceptibility
    Variant & Polymorphism
    Candidate gene
    Marker
    Therapy target
    ANIMAL & CELL MODELS