A Single Base-pair Change Creates a Chi Recombinational Hotspot in Bacteriophage Lambda
Overview
Authors
Affiliations
X4+ mutations, responsible for the Chi phenotype in phage lambda, locally increase the rate of recombination promoted by the Escherichia coli recombination system (Rec). X+ mutations in the cII gene, one of a few sites in lambda at which such mutations arise, were located genetically and physically with overlapping deletions. DNA sequence analysis of the deletion segment containing the X+ C mutations showed that two independent X+ C mutations arose by the same A-T to T-A transversion. Presumably, this change creates a nucleotide sequence recognized by a protein involved in a rate-limiting step of recombination.
Subramaniam S, Smith G Adv Genet. 2022; 109:1-37.
PMID: 36334915 PMC: 10047805. DOI: 10.1016/bs.adgen.2022.06.001.
Akaby-Cell-free protein expression system for linear templates.
Sato W, Sharon J, Deich C, Gaut N, Cash B, Engelhart A PLoS One. 2022; 17(4):e0266272.
PMID: 35390057 PMC: 8989226. DOI: 10.1371/journal.pone.0266272.
Amundsen S, Sharp J, Smith G Genetics. 2016; 204(1):139-52.
PMID: 27401752 PMC: 5012381. DOI: 10.1534/genetics.116.191056.
RecBCD enzyme and the repair of double-stranded DNA breaks.
Dillingham M, Kowalczykowski S Microbiol Mol Biol Rev. 2008; 72(4):642-71, Table of Contents.
PMID: 19052323 PMC: 2593567. DOI: 10.1128/MMBR.00020-08.
Gene replacement with linear DNA fragments in wild-type Escherichia coli: enhancement by Chi sites.
Dabert P, Smith G Genetics. 1997; 145(4):877-89.
PMID: 9093843 PMC: 1207893. DOI: 10.1093/genetics/145.4.877.