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Cloning of bovine CD69
J S Ahn1, M J Hamilton, W C Davis
1Department of Veterinary Microbiology and Pathology, College of Veterinary Medicine, Washington State University, Pullman, WA 99164-7040, USA.
Veterinary Immunology and Immunopathology
|June 29, 2002
Summary
Researchers cloned bovine CD69, an early activation antigen on lymphocytes. This finding provides insights into bovine immune responses and potential roles in lymphocyte activation.
Area of Science:
- Immunology
- Molecular Biology
- Veterinary Science
Background:
- CD69 is a known early activation antigen on hematopoietic cells in humans and mice.
- Information regarding bovine CD69 and its function in cattle immunity was previously unavailable.
Purpose of the Study:
- To clone and characterize bovine CD69.
- To investigate the molecular properties and potential function of bovine CD69 in lymphocyte activation.
Main Methods:
- Cloning of bovine CD69 from a cDNA expression library of activated peripheral blood lymphocytes.
- Sequence analysis and comparison with human and mouse CD69 orthologs.
- Identification of conserved domains and phosphorylation sites.
Main Results:
- Bovine CD69 cDNA was successfully cloned, featuring specific untranslated regions and a coding sequence.
- Nucleotide and amino acid sequence identities were established between bovine, mouse, and human CD69.
- Conserved C-type lectin family sequences and two casein kinase-2 phosphorylation sites were identified in bovine CD69.
Conclusions:
- Bovine CD69 shares structural similarities with its human and mouse counterparts, particularly within the C-type lectin domain.
- The identified phosphorylation sites suggest a role for CD69 in signaling pathways during lymphocyte activation in cattle.
- This study lays the foundation for understanding bovine CD69's function in the immune system.
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