Full name: intercellular adhesion molecule 4 (Landsteiner-Wiener blood group)

Gene type: protein coding

RefSeq status: REVIEWED

Also known as: CD242; LW

Summary: This gene encodes the Landsteiner-Wiener (LW) blood group antigen(s) that belongs to the immunoglobulin (Ig) superfamily, and that shares similarity with the intercellular adhesion molecule (ICAM) protein family. This ICAM protein contains 2 Ig-like C2-type domains and binds to the leukocyte adhesion LFA-1 protein. The molecular basis of the LW(A)/LW(B) blood group antigens is a single aa variation at position 100; Gln-100=LW(A) and Arg-100=LW(B). Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2008]

Expression: Biased expression in lung (RPKM 3.3), bone marrow (RPKM 3.1) and 13 other tissues

Gene size: 1566bp

Exon count: 3