製品: HLAE Antibody
カタログ: DF12002
タンパク質の説明: Rabbit polyclonal antibody to HLAE
アプリケーション: WB IHC
反応性: Human, Mouse, Rat
分子量: 42 kDa; 40kD(Calculated).
ユニプロット: P13747
RRID: AB_2844807

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製品説明

ソース:
Rabbit
アプリケーション:
WB 1:500-1:2000, IHC 1:50-1:200
*The optimal dilutions should be determined by the end user.
*Tips:

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

反応性:
Human,Mouse,Rat
クローナリティ:
Polyclonal
特異性:
HLAE Antibody detects endogenous levels of total HLAE.
RRID:
AB_2844807
引用形式: Affinity Biosciences Cat# DF12002, RRID:AB_2844807.
コンジュゲート:
Unconjugated.
精製:
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
保存:
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.
別名:

折りたたみ/展開

HLA class I histocompatibility antigen E alpha chain; EA1.2; EA2.1; HLA 6.2; HLA class I histocompatibility antigen alpha chain E; HLA class I histocompatibility antigen E alpha chain precursor; HLA class I histocompatibility antigen E alpha chain precursor; HLA6.2; HLAE; Lymphocyte antigen; Major histocompatibility complex class I E; MHC; MHC class I antigen E; MHC HLA E alpha 1; MHC HLA E alpha 2.1; QA1;

免疫原

免疫原:
Uniprot:
遺伝子(ID):
発現特異性:
P13747 HLAE_HUMAN:

Expressed in secretory endometrial cells during pregnancy (at protein level). The expression in nonlymphoid tissues is restricted to endothelial cells from all types of vessels, including arteries, veins, capillaries, and lymphatics (at protein level). In lymphoid organs, it is mainly expressed in endothelial venules, B and T cells, monocytes, macrophages, NK cells and megakaryocytes (at protein level).

タンパク質配列:
MVDGTLLLLLSEALALTQTWAGSHSLKYFHTSVSRPGRGEPRFISVGYVDDTQFVRFDNDAASPRMVPRAPWMEQEGSEYWDRETRSARDTAQIFRVNLRTLRGYYNQSEAGSHTLQWMHGCELGPDGRFLRGYEQFAYDGKDYLTLNEDLRSWTAVDTAAQISEQKSNDASEAEHQRAYLEDTCVEWLHKYLEKGKETLLHLEPPKTHVTHHPISDHEATLRCWALGFYPAEITLTWQQDGEGHTQDTELVETRPAGDGTFQKWAAVVVPSGEEQRYTCHVQHEGLPEPVTLRWKPASQPTIPIVGIIAGLVLLGSVVSGAVVAAVIWRKKSSGGKGGSYSKAEWSDSAQGSESHSL

PTMs - P13747 基板として

Site PTM Type Enzyme
S23 Phosphorylation
S25 Phosphorylation
Y48 Phosphorylation
N107 N-Glycosylation
K142 Ubiquitination
K167 Ubiquitination
K191 Ubiquitination
K195 Ubiquitination
K197 Ubiquitination
K207 Ubiquitination
S216 Phosphorylation
K264 Ubiquitination
S272 Phosphorylation
S333 Phosphorylation
K337 Ubiquitination
S340 Phosphorylation
Y341 Phosphorylation
S342 Phosphorylation
K343 Ubiquitination
S347 Phosphorylation
S357 Phosphorylation

研究背景

機能:

Non-classical major histocompatibility class Ib molecule involved in immune self-nonself discrimination. In complex with B2M/beta-2-microglobulin binds nonamer self-peptides derived from the signal sequence of classical MHC class Ia molecules (VL9 peptides). Peptide-bound HLA-E-B2M heterotrimeric complex primarily functions as a ligand for natural killer (NK) cell inhibitory receptor KLRD1-KLRC1, enabling NK cells to monitor the expression of other MHC class I molecules in healthy cells and to tolerate self. Upon cellular stress, preferentially binds signal sequence-derived peptides from stress-induced chaperones and is no longer recognized by NK cell inhibitory receptor KLRD1-KLRC1, resulting in impaired protection from NK cells. Binds signal sequence-derived peptides from non-classical MHC class Ib HLA-G molecules and acts as a ligand for NK cell activating receptor KLRD1-KLRC2, likely playing a role in the generation and effector functions of adaptive NK cells and in maternal-fetal tolerance during pregnancy. Besides self-peptides, can also bind and present pathogen-derived peptides conformationally similar to VL9 peptides to alpha-beta T cell receptor (TCR) on unconventional CD8+ cytotoxic T cells, ultimately triggering antimicrobial immune response.

(Microbial infection) Viruses like human cytomegalovirus have evolved an escape mechanism whereby virus-induced down-regulation of host MHC class I molecules is coupled to the binding of viral peptides to HLA-E, restoring HLA-E expression and inducing HLA-E-dependent NK cell immune tolerance to infected cells.

PTMs:

N-glycosylated.

The soluble form (sHLA-E) can be partly produced by proteolytic cleavage at the cell surface (shedding) by a matrix metalloproteinase. Alternative splicing is also suggested as a mechanism for generation of sHLA-E, although it remains to be proved.

細胞の位置付け:

Cell membrane>Single-pass type I membrane protein. Golgi apparatus membrane.

Secreted.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
組織特異性:

Expressed in secretory endometrial cells during pregnancy (at protein level). The expression in nonlymphoid tissues is restricted to endothelial cells from all types of vessels, including arteries, veins, capillaries, and lymphatics (at protein level). In lymphoid organs, it is mainly expressed in endothelial venules, B and T cells, monocytes, macrophages, NK cells and megakaryocytes (at protein level).

サブユニット構造:

Forms a heterotrimer with B2M and a self- or a pathogen-derived peptide (peptide-bound HLA-E-B2M). Similarly to MHC class Ia assembly, HLA-E-B2M heterodimer interacts with components of the antigen processing machinery TAPBP and TAP1-TAP2 complex; this interaction is required for peptide loading and translocation to the cell surface. Interacts with CALCR; this interaction is required for appropriate folding. The optimum binding peptide is a nonamer (VL9) that is primarily derived from amino-acid residues 3-11 of the signal sequences of most HLA-A, -B, -C and -G molecules. The VL9 peptide anchors to five main sites in the peptide-binding groove of HLA-E. Peptide-bound HLA-E-B2M complex interacts with KLRD1-KLRC1 receptor on NK cells. Binds with lower affinity to activating KLRD1-KLRC2. The common subunit KLRC1 plays a prominent role in directly interacting with HLA-E. Peptide-bound HLA-E-B2M interacts with the alpha-beta TCR on unconventional CD8+ T cells. Peptide-free HLA-E interacts with HLA-F-B2M complex; this interaction may regulate the intracellular trafficking and the stability of peptide-free MHC class I OCs.

タンパク質ファミリー:

Belongs to the MHC class I family.

研究領域

· Cellular Processes > Transport and catabolism > Endocytosis.   (View pathway)

· Cellular Processes > Transport and catabolism > Phagosome.   (View pathway)

· Cellular Processes > Cell growth and death > Cellular senescence.   (View pathway)

· Environmental Information Processing > Signaling molecules and interaction > Cell adhesion molecules (CAMs).   (View pathway)

· Human Diseases > Endocrine and metabolic diseases > Type I diabetes mellitus.

· Human Diseases > Infectious diseases: Viral > Human papillomavirus infection.

· Human Diseases > Infectious diseases: Viral > HTLV-I infection.

· Human Diseases > Infectious diseases: Viral > Herpes simplex infection.

· Human Diseases > Infectious diseases: Viral > Epstein-Barr virus infection.

· Human Diseases > Cancers: Overview > Viral carcinogenesis.

· Human Diseases > Immune diseases > Autoimmune thyroid disease.

· Human Diseases > Immune diseases > Allograft rejection.

· Human Diseases > Immune diseases > Graft-versus-host disease.

· Human Diseases > Cardiovascular diseases > Viral myocarditis.

· Organismal Systems > Immune system > Antigen processing and presentation.   (View pathway)

· Organismal Systems > Immune system > Natural killer cell mediated cytotoxicity.   (View pathway)

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