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PMID: 3259318 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

A conserved sequence in the T-cell receptor beta-chain promoter region.

Anderson SJ, Chou HS, Loh DY

Abstract

The antigen-specific receptors of T and B lymphocytes are distinct, though structurally related, molecules. During development, lymphoid cells assemble functional variable (V) region genes for each receptor chain from separate multimember gene families by somatic DNA rearrangements of individual germ-line segments. Transcription may play a role in regulating the tissue and stage specificity of these rearrangements by controlling the accessibility of germ-line loci to the recombinational machinery. Immunoglobulin V-region genes are transcribed from tissue-specific promoters that have been well characterized. We report here the characterization of 14 T-cell receptor beta-chain V-region gene promoters. Sequence analysis indicates that these promoters do not contain the conserved octamer that is located upstream of all immunoglobulin genes. However, a unique decanucleotide sequence, not present in immunoglobulin genes, is conserved in the promoter region of murine and human V beta genes. We identify this sequence as a potential regulatory element, based on its position, conservation, and sequence homology to sites known to bind transcription-activating factors. The possibility that the distinct structures of immunoglobulin and T-cell receptor gene promoters may contribute to the tissue-specific rearrangement and expression of receptor gene families is discussed.

MeSH Terms
Animals Base Sequence Cloning, Molecular Genes Genes, Immunoglobulin Immunoglobulin Variable Region/genetics Macromolecular Substances Mice Molecular Sequence Data Promoter Regions, Genetic Receptors, Antigen, T-Cell/genetics T-Lymphocytes/immunology Transcription, Genetic
Chemicals
Immunoglobulin Variable Region Macromolecular Substances Receptors, Antigen, T-Cell
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Anderson S J
Howard Hughes Medical Institute, Department of Medicine, Washington University Medical School, St. Louis, MO 63110.
Chou H S
Loh D Y
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Article Info
Journal
Proceedings of the National Academy of Sciences of the United States of America
Abbr.
Proc Natl Acad Sci U S A
ISSN
0027-8424
Published
1988-05-00
Pages
3551-4
Language
English
Region
United States
NLM ID
7505876
PMCID
PMC280251
Subset
IM
Grants
NIAID NIH HHS · AI07163 · United States
NIGMS NIH HHS · GM07067 · United States
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