Journal
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume 98, Issue 12, Pages 6771-6776Publisher
NATL ACAD SCIENCES
DOI: 10.1073/pnas.121101598
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Funding
- NIAID NIH HHS [R37 AI23338, R37 AI023338] Funding Source: Medline
- NIDDK NIH HHS [R01 DK55390-01] Funding Source: Medline
- NIGMS NIH HHS [F32 GM020231, F32 GM20231] Funding Source: Medline
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An extensive, highly diversified multigene family of novel immunetype receptor (nitr) genes has been defined in Danio rerio (zebrafish), The genes are predicted to encode type I transmembrane glycoproteins consisting of extracellular variable (V) and V-like C2 (V/C2) domains, a transmembrane region and a cytoplasmic tail. All of the genes examined encode immunoreceptor tyrosine-based inhibition motifs in the cytoplasmic tail. Radiation hybrid panel mapping and analysis of a deletion mutant line (b240) indicate that a minimum of approximate to 40 nitr genes are contiguous in the genome and span approximate to0.6 Mb near the top of zebrafish linkage group 7, One flanking region of the nitr gene complex shares conserved synteny with a region of mouse chromosome 7. which shares conserved synteny with human 19q13.3-q13.4 that encodes the leukocyte receptor cluster. Antibody-induced crosslinking of Nitrs that have been introduced into a human natural killer cell line inhibits the phosphorylation of mitogen-activated protein kinase that is triggered by natural killer-sensitive tumor target cells, Nitrs likely represent intermediates in the evolution of the leukocyte receptor cluster.
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