| Literature DB >> 9285411 |
D Cosman1, N Fanger, L Borges, M Kubin, W Chin, L Peterson, M L Hsu.
Abstract
The human cytomegalovirus UL18 gene product is a homolog of cellular major histocompatibility (MHC) class I antigens. UL18 has been proposed to protect virus-infected cells against natural killer (NK) cell cytotoxicity by engaging NK cell killer inhibitory receptors (KIR) for MHC class I. UL18 binds to a novel immunoglobulin superfamily glycoprotein, designated Leukocyte Immunoglobulin-like Receptor (LIR-1). This protein is distinct from, but related to, known KIRs and binds cellular MHC class I antigens. The cytoplasmic domain of LIR-1 contains four putative immunoreceptor tyrosine-based inhibitory motifs. Upon tyrosine phosphorylation, LIR-1 associates with the tyrosine phosphatase SHP-1. In contrast to KIRs, LIR-1 is expressed predominantly on monocytic and B lymphoid cell types, suggesting a distinct biological function.Entities:
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Year: 1997 PMID: 9285411 DOI: 10.1016/s1074-7613(00)80529-4
Source DB: PubMed Journal: Immunity ISSN: 1074-7613 Impact factor: 31.745