Recombinant Human HLA class I histocompatibility antigen, alpha chain F(HLA-F),partial

Code CSB-YP335552HU
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Source Yeast
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Code CSB-EP335552HU
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Source E.coli
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Code CSB-EP335552HU-B
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP335552HU
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Source Baculovirus
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Code CSB-MP335552HU
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Source Mammalian cell
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Product Details

Purity >85% (SDS-PAGE)
Target Names HLA-F
Uniprot No. P30511
Alternative Names CDA12; HLA 5.4; HLA class I histocompatibility antigen; alpha chain F; HLA class I molecule; HLA F antigen; HLA-CDA12; HLA-F; HLAF; HLAF_HUMAN; Leukocyte antigen F; MHC class I antigen F
Species Homo sapiens (Human)
Protein Length Partial
Tag Info The following tags are available.
N-terminal His-tagged
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Protein FAQs
Storage Condition Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet Please contact us to get it.

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Target Background

Non-classical major histocompatibility class Ib molecule postulated to play a role in immune surveillance, immune tolerance and inflammation. Functions in two forms, as a heterotrimeric complex with B2M/beta-2 microglobulin and a peptide (peptide-bound HLA-F-B2M) and as an open conformer (OC) devoid of peptide and B2M (peptide-free OC). In complex with B2M, presents non-canonical self-peptides carrying post-translational modifications, particularly phosphorylated self-peptides. Peptide-bound HLA-F-B2M acts as a ligand for LILRB1 inhibitory receptor, a major player in maternal-fetal tolerance. Peptide-free OC acts as a ligand for KIR3DS1 and KIR3DL2 receptors. Upon interaction with activating KIR3DS1 receptor on NK cells, triggers NK cell degranulation and anti-viral cytokine production. Through interaction with KIR3DL2 receptor, inhibits NK and T cell effector functions. May interact with other MHC class I OCs to cross-present exogenous viral, tumor or minor histompatibility antigens to cytotoxic CD8+ T cells, triggering effector and memory responses. May play a role in inflammatory responses in the peripheral nervous system. Through interaction with KIR3DL2, may protect motor neurons from astrocyte-induced toxicity.
Gene References into Functions
  1. interactions between KIR3DS1 and HLA-F contribute to NK cell-mediated control of HCV. PMID: 30031767
  2. the results of this study provide a blueprint of the molecular details of HLA-F, which will inform future exploration of its roles in human health and allow for the development of additional, targeted therapeutics PMID: 28636952
  3. this study established HLA-F as a ligand of KIR3DS1 and have demonstrated cell-context-dependent expression of HLA-F that might explain the widespread influence of KIR3DS1 in human disease, including delayed progression of disease caused by human immunodeficiency virus type 1 PMID: 27455421
  4. Two eSNPs were associated with fecundability at a FDR of 5%; both were in the HLA region and were eQTLs for the TAP2 gene (P = 1.3x10-4) and the HLA-F gene (P = 4.0x10-4), respectively. PMID: 27447835
  5. provides substantial evidence that the rs7903146 variant is significantly associated with the risk of diabetic retinopathy in Caucasian populations PMID: 26332651
  6. Overexpression of a single MHCI molecule, HLA-F, protects human MNs from ALS astrocyte-mediated toxicity, whereas knockdown of its receptor, the killer cell immunoglobulin-like receptor KIR3DL2, on human astrocytes results in enhanced motor neurons death PMID: 26928464
  7. This is the first study regarding HLA-F polymorphisms in a Euro-Brazilian population contributing to the Southern Brazilian genetic characterization. PMID: 25413105
  8. The effect of Japanese encephalitis virus and TNF-alpha exposure on NFkappaB-mediated induction of HLA-F is reported. PMID: 25461528
  9. A previously unrecognized model of Ag cross-presentation mediated by HLA-F & MHC-I open conformers on activated lymphocytes & monocytes may significantly contribute to the regulation of immune system functions & the immune defense. PMID: 23851683
  10. expression in gastric cancer lesion was unrelated to patient prognosis PMID: 23542057
  11. HLA-F and MHC class I open conformers are ligands for NK cell Ig-like receptors. PMID: 24018270
  12. Upregulated HLA-F expression (p = 0.026) and downregulated HLA I expression (p = 0.013) could be an independent unfavorable prognostic factor. PMID: 22544725
  13. surface marker on activated lymphocytes PMID: 20865824
  14. These data suggest that HLA-F is expressed independently of peptide and that a physical interaction specific to MHC-I HC plays a role in the function of MHC-I HC expression in activated lymphocytes. PMID: 20483783
  15. This is the first example of placental HLA-F expression--primarily in trophoblasts that have invaded the maternal decidua--in the same cells that simultaneously express the other two nonclassical class I antigens HLA-E and HLA-G. PMID: 12874228
  16. HLA-F surface expression on B cell and monocyte cell lines correlates with the presence of a limited amount of endoglycosidase H (Endo H)-resistant HLA-F; however, clearly not all surface-expressed HLA-F is fully glycosylated. PMID: 14607927
  17. HLA-F is entirely dependent on its cytoplasmic tail for export from the endoplasmic reticulum. PMID: 16709803
  18. the role of NKG2D and 2B4 is not focussed on trophoblast recognition in normal pregnancy, but is more likely involved in cross-talk among maternal cells of the placental bed PMID: 18658158

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Subcellular Location Cell membrane; Single-pass type I membrane protein. Early endosome membrane. Lysosome membrane.
Protein Families MHC class I family
Tissue Specificity Expressed in resting B cells (at protein level). Expressed in secondary lymphoid organs rich in B and T cells such as the tonsils, spleen, and thymus (at protein level). Expressed in the endothelial cells of the tonsils. Expressed on activated lymphoid ce
Database Links

HGNC: 4963

OMIM: 143110

KEGG: hsa:3134

STRING: 9606.ENSP00000259951

UniGene: Hs.519972

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