Carrier Proteins/genetics; Histocompatibility Antigens Class I/genetics; Membrane Proteins/genetics; NK Cell Lectin-Like Receptor Subfamily K/agonists; Recombinant Proteins/genetics; Amino Acid Sequence/genetics; Carrier Proteins/immunology; Carrier Proteins/metabolism; Cell Line, Tumor; Cytotoxicity, Immunologic/genetics; Histocompatibility Antigens Class I/immunology; Histocompatibility Antigens Class I/metabolism; Humans; Interferon-gamma/genetics; Interferon-gamma/metabolism; K562 Cells; Killer Cells, Natural/immunology; Killer Cells, Natural/metabolism; Ligands; Lymphocyte Activation/genetics; Lymphocyte Activation/immunology; Membrane Proteins/immunology; Membrane Proteins/metabolism; Molecular Sequence Data; NK Cell Lectin-Like Receptor Subfamily K/biosynthesis; NK Cell Lectin-Like Receptor Subfamily K/genetics; NK Cell Lectin-Like Receptor Subfamily K/immunology; Protein Binding; Protein Isoforms/genetics; Protein Isoforms/immunology; Protein Isoforms/metabolism; Recombinant Proteins/immunology; Recombinant Proteins/metabolism; Sequence Alignment; Transfection