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Target intelligence / Profile preview
Major Histocompatibility Complex Class I Protein (MHC Class I)
- Target
- MHC Class I
- Molecular classification
- Receptor, Cell Surface Glycoprotein
01
Overview
MHC class I proteins play a central role in adaptive immunity by presenting intracellularly derived antigens for surveillance by cytotoxic T lymphocytes while also modulating innate responses via interactions with natural killer cells. Their structure—a heavy chain paired with β2-microglobulin—enables selective binding and display of short peptides at the cell surface for immune recognition. High genetic diversity ensures broad population-level protection against pathogens but complicates tissue transplantation due to alloimmune responses.
- Other names
- HLA Class IHuman Leukocyte Antigen Class IMHC-I
02
Biological functions
Antigen PresentationImmune SurveillanceNatural Killer Cell RegulationT cell activation
03
Disease associations
InfectionCancerAutoimmune DiseasesTransplant Rejection
04
Safety considerations
Alloimmune responses in transplantationPotential for immune evasion by pathogens or tumorsCytokine release syndrome
05
Biomarkers
MHC Class I expression levels in cancerHLA typing for transplant compatibility
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