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© Research
Publication : Trends in genetics : TIG

C-DNA may facilitate homologous DNA pairing.

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Trends in genetics : TIG - 01 Jul 2023

Mazur AK, Gladyshev E

Link to Pubmed [PMID] – 36804168

Link to DOI – 10.1016/j.tig.2023.01.008

Trends Genet 2023 Jul; 39(7): 575-585

Recombination-independent homologous pairing represents a prominent yet largely enigmatic feature of chromosome biology. As suggested by studies in the fungus Neurospora crassa, this process may be based on the direct pairing of homologous DNA molecules. Theoretical search for the DNA structures consistent with those genetic results has led to an all-atom model in which the B-DNA conformation of the paired double helices is strongly shifted toward C-DNA. Coincidentally, C-DNA also features a very shallow major groove that could permit initial homologous contacts without atom-atom clashes. The hereby conjectured role of C-DNA in homologous pairing should encourage the efforts to discover its biological functions and may also clarify the mechanism of recombination-independent recognition of DNA homology.