Icam4

Homo sapiens

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]

Ly9

Mus musculus

PHENOTYPE: This locus controls an antigen on thymocytes, lymphocytes and bone marrow cells. The a allele determines Ly9.1 antigen in A/J, 129/Re, BALB/c and C3H/He; the b allele determines antigen Ly9.2 in the C57 family of strains, HTI/Go, MA/My, F/St and C58/Lw. Null mutants are viable, healthy and fertile. [provided by MGI curators]