Protein B2M
Identifiers
HUGO:B2M
Maps_Modules
HMC:AVOIDING_IMMUNE_DESTRUCTION
Adaptive Immune Response
/ SMAC
References
PMID:16181333 PMID:22076556 PMID:10358761
DENDRITIC_CELL
PMID:16181333, PMID:22076556
Upon dissociation from CNX, the heavy chain of (MHC) class I binds ??2 microglobulin (b2m) and is incorporated into the peptide-loading complex.
PMID:10358761
All CD1 proteins studied to date are expressed on the surface of cells as type I transmembrane proteins that associate noncovalently with ??2-microglobulin
PMID:11717192
The gene expression of TAP1, TAP2, tapasin, ??2m and HLA-?? HC is up-regulated in mature DC.
Modifications:
In compartment: Endoplasmic Reticulum_Membrane
- B2M@Endoplasmic Reticulum_Membrane
In compartment: PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
- B2M@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
Participates in complexes:
In compartment: Cancer_cell
- B2M:MHC_class_I*:Tumor_antigen_fragment@Cancer_cell
In compartment: Endoplasmic Reticulum_Membrane
- B2M:MHC_class_I*@Endoplasmic Reticulum_Membrane
- B2M:MHC_class_I*:Tumor_antigen_fragment@Endoplasmic Reticulum_Membrane
In compartment: INNATE_IMMUNE_CELL_Membrane
- B2M:CD1*:Lipid_antigen@INNATE_IMMUNE_CELL_Membrane
- B2M:MHC_class_I*:Tumor_antigen_fragment@INNATE_IMMUNE_CELL_Membrane
In compartment: PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
- B2M:MHC_class_I*@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
- B2M:CD1*:Lipid_antigen@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
- B2M:MHC_class_I*:Tumor_antigen_fragment@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
Participates in reactions:
As Reactant or Product:- TCR_signaling_induction@Cancer_cell
→
B2M:MHC_class_I*:Tumor_antigen_fragment@Cancer_cell
- B2M:MHC_class_I*@Endoplasmic Reticulum_Membrane
+ Tumor_antigen_fragment@Endoplasmic Reticulum_Membrane
→
B2M:MHC_class_I*:Tumor_antigen_fragment@Endoplasmic Reticulum_Membrane
- B2M:MHC_class_I*@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
+ Tumor_antigen_fragment@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
→
B2M:MHC_class_I*:Tumor_antigen_fragment@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
- B2M:MHC_class_I*:Tumor_antigen_fragment@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
→
B2M:MHC_class_I*:Tumor_antigen_fragment@INNATE_IMMUNE_CELL_Membrane
- CD1*@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
+ B2M@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
+ Lipid_antigen@INNATE_IMMUNE_CELL_Cytosol
→
B2M:CD1*:Lipid_antigen@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
- B2M:CD1*:Lipid_antigen@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
→
B2M:CD1*:Lipid_antigen@INNATE_IMMUNE_CELL_Membrane
- B2M:CD1*:Lipid_antigen@INNATE_IMMUNE_CELL_Membrane
→
Antigen_presentation@default
- B2M:MHC_class_I*:Tumor_antigen_fragment@Endoplasmic Reticulum_Membrane
→
B2M:MHC_class_I*:Tumor_antigen_fragment@INNATE_IMMUNE_CELL_Membrane
- B2M:MHC_class_I*:Tumor_antigen_fragment@INNATE_IMMUNE_CELL_Membrane
→
Antigen_presentation@default
- B2M:MHC_class_I*@Endoplasmic Reticulum_Membrane
→
B2M:MHC_class_I*@PHAGOSOME/ENDOSOME/LYSOSOME_Membrane
- B2M@Endoplasmic Reticulum_Membrane
+ MHC_class_I*@Endoplasmic Reticulum_Membrane
→
B2M:MHC_class_I*@Endoplasmic Reticulum_Membrane
As Catalyser:- LCK@cSMAC
+ CD8*@cSMAC
→
CD8*:LCK|Y394_pho@cSMAC
- CD247:CD3*:alpha_/beta_TCR*@cSMAC
→
CD247|pho:CD3*|pho:alpha_/beta_TCR*@cSMAC
+ PTPRC@dSMAC