Molecular organization of the human CD3 gene family on chromosome 11q23

The genes encoding three invariant components of the human T-cell antigen receptor, the CD3 delta, gamma, and epsilon chains, are located on human chromosome 11 at band q23. We isolated cosmid clones containing the human CD3 delta and gamma chain genes in vectors designed for rapid and efficient chr...

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Bibliographic Details
Published in:Immunogenetics (New York) 1988-11, Vol.28 (5), p.365-373
Main Authors: EVANS, G. A, LEWIS, K. A, LAWLESS, G. M
Format: Article
Language:English
Subjects:
Antigens, Differentiation, T-Lymphocyte - genetics
Base Sequence
Biological and medical sciences
CD3 Complex
Cell Line
Chromosome Mapping
Chromosomes, Human, Pair 11
Cosmids
DNA Probes
Fundamental and applied biological sciences. Psychology
Genes. Genome
Genetic Linkage
Humans
Molecular and cellular biology
Molecular genetics
Molecular Sequence Data
Multigene Family
Receptors, Antigen, T-Cell - genetics
Restriction Mapping
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Summary:The genes encoding three invariant components of the human T-cell antigen receptor, the CD3 delta, gamma, and epsilon chains, are located on human chromosome 11 at band q23. We isolated cosmid clones containing the human CD3 delta and gamma chain genes in vectors designed for rapid and efficient chromosome "walking". The human CD3 epsilon gene was located in the region immediately downstream of the CD3 delta and gamma genes using synthetic oligonucleotide probes and the localization of this gene confirmed by DNA sequencing. Detailed restriction mapping of the CD3 locus demonstrated that all three CD3 subunits are encoded within 60 kb of DNA with the CD3 epsilon gene located 26 kb downstream of the CD3 delta and gamma genes. Analysis of genomic DNA on pulsed field gels using probes isolated from these cosmid clones defined a physical map of 750 kb spanning the CD3 locus on human chromosome 11q23. The CD3 genes thus comprise a multigene family encoding cell surface components important for transmembrane signaling on T lymphocytes. The arrangement of these genes suggest that they may share common regulatory elements for the control of gene expression during T-cell ontogeny.
ISSN:0093-7711
1432-1211
DOI:10.1007/BF00364236