Abstract:
:Human CS1, also known as novel Ly9, 19A24, or CRACC, is a member of the immunoglobulin gene superfamily (IgSF) expressed on natural killer cells and other leukocytes. Here we describe the cloning of the mouse homologue of this gene. The mouse novel Ly9 gene is shown to encode a transmembrane protein composed of two extracellular immunoglobulin-like domains, a transmembrane region and an 88-amino acid cytoplasmic domain. Mouse novel Ly9 is structurally similar to the extracellular domains of CD84 and CD229 (Ly9). Both mouse and human novel Ly9 genes mapped close to the CD229gene in a region where other members of the CD150 family have also been mapped, and analysis of their genomic sequences showed that they have an identical intron/exon organization. Northern blot analysis revealed that the expression of mouse and human novel Ly9 was predominantly restricted to hematopoietic tissues, with the exception of testis. Here we show that SAP (SH2D1A), an adapter protein responsible for the X-linked lymphoproliferative disease, binds to the phosphorylated cytoplasmic tail of human but not mouse novel Ly9. Taken together, these data indicate that mouse novel Ly9 is a new member of the expanding CD150 family of cell surface receptors.
journal_name
Immunogeneticsjournal_title
Immunogeneticsauthors
Tovar V,del Valle J,Zapater N,Martin M,Romero X,Pizcueta P,Bosch J,Terhorst C,Engel Pdoi
10.1007/s00251-002-0483-3subject
Has Abstractpub_date
2002-09-01 00:00:00pages
394-402issue
6eissn
0093-7711issn
1432-1211journal_volume
54pub_type
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