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- W4236648893 abstract "The hallmark of T- and B-lymphocyte development is the rearrangement of variable (V), diversity (D), and joining (J) segments of T-cell receptor (TCR) and immunoglobulin (Ig) genes to generate a diverse repertoire of antigen receptor specificities in the immune system. The process of V(D)J recombination is shared in the rearrangement of all seven antigen receptor genes and is controlled by changes in chromatin structure, which regulate accessibility to the recombinase apparatus in a lineage- and stage-specific manner. These chromatin changes are linked to transcription of the locus in its unrearranged (germline) configuration. To understand how germline transcription of the TCRβ-chain gene is regulated, we determined the structure of germline transcripts initiating near the Dβ1 segment and identified a promoter within this region. The Dβ1 promoter is active in the presence of the TCRβ enhancer (Eβ), and in this context, exhibits preferential activity in pro-T versus mature T-cell lines, as well as T- versus B-lineage specificity. These studies provide insight into the developmental regulation of TCRβ germline transcription, one of the earliest steps in T-cell differentiation." @default.
- W4236648893 created "2022-05-12" @default.
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- W4236648893 date "1999-05-01" @default.
- W4236648893 modified "2023-09-29" @default.
- W4236648893 title "Promoter Element for Transcription of Unrearranged T-Cell Receptor β-Chain Gene in Pro-T Cells" @default.
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- W4236648893 doi "https://doi.org/10.1182/blood.v93.9.3017.409k01_3017_3025" @default.
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