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FLASH GENE
Symbol HLA-G contributors: mct/npt - updated : 06-12-2019
HGNC name major histocompatibility complex, class I, G
HGNC id 4964
EXPRESSION
Type restricted
   expressed in (based on citations)
organ(s)
SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
Digestiveintestine    
Reproductivefemale systemplacenta   
Respiratorylung    
cells
SystemCellPubmedSpeciesStageRna symbol
Respiratoryepithelial cell
cell lineage
cell lines
fluid/secretion
at STAGE
physiological period embryo, pregnancy
Text placenta, trophoblast, placental cells at the maternal-fetal interface
PROTEIN
PHYSICAL PROPERTIES
STRUCTURE
motifs/domains
  • three globular extracellular domains, alpha 1 and alpha 2 forming the peptide binding groove
  • a I, C-like alpha 3 domain
  • a single transmembrane domain
  • a cytoplasmic tail
  • conjugated GlycoP
    mono polymer homomer , heteromer , monomer , dimer
    HOMOLOGY
    Homologene
    FAMILY
  • MHC class I family
  • CATEGORY antigen
    SUBCELLULAR LOCALIZATION     plasma membrane
    basic FUNCTION
  • central immune tolerance role during early pregnancy, playing an important immunoregulatory roles, including the inhibition of maternal NK and T cells and the promotion maternal tolerance of the allogeneic fetus
  • modulating cytokine production of monocyte-generated dendritic cells during early pregnancy
  • having a potential immunomodulatory role during lymphoproliferative disorders (Sebti 2007)
  • may play a crucial role for the susceptibility to Kawasaki disease (Kim 2008)
  • HLA-G homodimer, but not the monomer, induces secretion of the proinflammatory cytokines IL6 and IL8 and a small amount of TNF from both decidual macrophages and NK cells (Li 2009)
  • HLA-G, CD274 and CD276, are secreted from early and term placenta, and have important implications in the mechanisms by which trophoblast immunomodulators modify the maternal immunological environment
  • CELLULAR PROCESS
    PHYSIOLOGICAL PROCESS immunity/defense , reproduction/sex
    text mandatory expression for the development of pregnancy
    PATHWAY
    metabolism
    signaling
    a component
  • heterodimerizing with beta-2 microglobular
  • INTERACTION
    DNA
    RNA
    small molecule
    protein
  • binding for adequate complexion
  • loaded by TAP molecules
  • HLA-G ligand KIR2DL4, is mainly expressed on NK cells and CD56+ T cells with no differences between CMV+ and CMV- subjects
  • cell & other
    REGULATION
    Other transactivation regulated by CREBBP and EP300
    ASSOCIATED DISORDERS
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    tumoral     --over  
    in lymphoproliferative disorders (Sebti 2007)
    Susceptibility to Kawasaki disease
    Variant & Polymorphism SNP nonsynonymous SNP (C/A) of the HLA-G gene (rs12722477, Leu134Ile) was significantly associated with Kawasaki disease (Kim 2008)
    Candidate gene
    Marker
    Therapy target
    ANIMAL & CELL MODELS