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- Table of Contents
Facts about HLA class I histocompatibility antigen, alpha chain G.
Peptide-bound HLA-G-B2M complex functions as a ligand for inhibitory/activating KIR2DL4, LILRB1 and LILRB2 receptors on uterine immune cells to promote fetal development whilst preserving maternal-fetal tolerance (PubMed:23184984, PubMed:29262349, PubMed:16366734, PubMed:19304799, PubMed:20448110, PubMed:27859042). Upon interaction with KIR2DL4 and LILRB1 receptors on decidual NK cells, it activates NK cell senescence-associated secretory phenotype as a molecular switch to promote vascular remodeling and fetal growth in early pregnancy (PubMed:23184984, PubMed:29262349, PubMed:16366734, PubMed:19304799).
Human | |
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Gene Name: | HLA-G |
Uniprot: | P17693 |
Entrez: | 3135 |
Belongs to: |
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MHC class I family |
b2 microglobulin; HLA class I histocompatibility antigen, alpha chain G; HLA class I molecule; HLA G antigen; HLA G; HLA-6.0; HLA-G histocompatibility antigen, class I, G; HLAG; HLA-G; major histocompatibility complex, class I, G; MHC Class I Antigen G; MHC-G
Mass (kDA):
38.224 kDA
Human | |
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Location: | 6p22.1 |
Sequence: | 6; NC_000006.12 (29826979..29831130) |
Expressed in extravillous trophoblasts and cytotrophoblasts (PubMed:26460007, PubMed:16210391, PubMed:7589701). Expressed in adult eye (PubMed:1570318). Expressed in immune cell subsets including monocytes, myeloid and plasmacytoid dendritic cells and regulatory T cells (Tr1)(at protein level) (PubMed:20448110). Secreted by follicular dendritic cell and follicular helper T cells (PubMed:24453251). Isoform 5: Detected in physiological fluids including amniotic fluid and serum (PubMed:11137219). Isoform 7: Expressed in placenta, amniotic membrane, skin cord blood and peripheral blood mononuclear cells (PubMed:11137219).
[Isoform 1]: Cell membrane; Single-pass type I membrane protein. Endoplasmic reticulum membrane. Early endosome membrane.; [Soluble HLA class I histocompatibility antigen, alpha chain G]: Secreted.; [Isoform 2]: Cell membrane; Single-pass type I membrane protein.; [Isoform 3]: Cell membrane; Single-pass type I membrane protein.; [Isoform 4]: Cell membrane; Single-pass type I membrane protein.; [Isoform 5]: Secreted. Early endosome.; [Isoform 6]: Secreted.; [Isoform 7]: Secreted.; Cell projection, filopodium membrane. HLA-G trogocytosis from extravillous trophoblast's filopodia occurs in the ma
PMID: 2336406 by Shukla H., et al. The mRNA of a human class I gene HLA G/HLA 6.0 exhibits a restricted pattern of expression.
PMID: 3480534 by Geraghty D.E., et al. A human major histocompatibility complex class I gene that encodes a protein with a shortened cytoplasmic segment.