FEATURES

FAMILY

DESCRIPTION

Also known as MICA_HUMAN, MICA, PERB11.1. Seems to have no role in antigen presentation. Acts as a stress-induced self-antigen that is recognized by gamma delta T-cells. Ligand for the KLRK1/NKG2D receptor. Binding to KLRK1 leads to cell lysis. Unlike classical MHC class I molecules, does not form a heterodimer with beta-2-microglobulin. Binds as a monomer to a KLRK1/NKG2D homodimer. KLRK1 forms a complex with HCST/DAP10 in which KLRK1 binds MICA while HCST acts as an adapter molecule which enables signal transduction. Interacts with PDIA6 on the surface of tumor cells, leading to disulfide bond reduction which is required for release of MICA from tumor cells. Interacts with human cytomegalovirus/HHV-5 protein UL142.

EXTERNAL LINKS

MICA

MHC class I polypeptide-related sequence A

MICA

Molecular Synopsis