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. 1993 Nov;13(11):6957–6968. doi: 10.1128/mcb.13.11.6957

V(D)J recombination coding junction formation without DNA homology: processing of coding termini.

N V Boubnov 1, Z P Wills 1, D T Weaver 1
PMCID: PMC364757  PMID: 8413286

Abstract

Coding junction formation in V(D)J recombination generates diversity in the antigen recognition structures of immunoglobulin and T-cell receptor molecules by combining processes of deletion of terminal coding sequences and addition of nucleotides prior to joining. We have examined the role of coding end DNA composition in junction formation with plasmid substrates containing defined homopolymers flanking the recombination signal sequence elements. We found that coding junctions formed efficiently with or without terminal DNA homology. The extent of junctional deletion was conserved independent of coding ends with increased, partial, or no DNA homology. Interestingly, G/C homopolymer coding ends showed reduced deletion regardless of DNA homology. Therefore, DNA homology cannot be the primary determinant that stabilizes coding end structures for processing and joining.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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