| Literature DB >> 12533491 |
Tetsuya Uchida1, Mariko Miyawaki, Haruyasu Kinashi.
Abstract
UV irradiation of Streptomyces griseus 2247 yielded a new chromosomal deletion mutant, MM9. Restriction and sequencing analysis revealed that homologous recombination between two similar lipoprotein-like open reading frames, which are located 450 and 250 kb from the left and right ends, respectively, caused chromosomal arm replacement. As a result, new 450-kb terminal inverted repeats (TIRs) were formed in place of the original 24-kb TIRs. Frequent homologous recombinations in Streptomyces strains suggest that telomere deletions can usually be repaired by recombinational DNA repair functioning between the intact and deleted TIR sequences on the same chromosome.Entities:
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Year: 2003 PMID: 12533491 PMCID: PMC142817 DOI: 10.1128/JB.185.3.1120-1124.2003
Source DB: PubMed Journal: J Bacteriol ISSN: 0021-9193 Impact factor: 3.490