A novel infiltration process without defective colloidal templates resulted in 3D nanoshell structures, comparable to the structures formed from slow and expensive ALD process.
Eubacteria possess a quality control system that rescues ribosomes stalled on defective mRNA templates.
Because gap repair is not always efficient, whether via homologous recombination or using the sister chromatid strand as a template, defective copies are often generated due to abortion, slippage, or template switching in the course of transposition and repair [ 2, 33].
Consistent with the viral replication cycle whereby the plus strand genome is synthesized from a minus strand, mutations in the 5′-UTR decrease replication perhaps due to defective synthesis of the template minus strand (Yu et al., 2008).
Under this model, conversion displays a directional bias favouring the replacement of defective coding sequences with unaffected templates.
A tract of six ribonucleotides embedded in single-strand DNA oligos corresponding to either lagging or leading strand sequences could serve as a template to correct a defective lacZ marker gene in the chromosome of the bacterium Escherichia coli.
We show that Saccharomyces cerevisiae Polα/Primase/Ctf4 mutants, proficient in bulk DNA replication, are defective in recombination-mediated damage-bypass by template switching (TS) and have reduced sister chromatid cohesion.
Furthermore, we found that the viability conferred by HMO1 deletion in mutants defective in the PCNA polyubiquitylation pathway of template switching depends on the TLS polymerase, Rev3 (Fig 3D).
Recently, the episomal nature of the integration-defective vectors was further exploited as a template source for high-efficient gene correction by homologous recombination in human cell lines and in human embryonic stem cells [ 10, 11].
Consistently, template switch mutations are eliminated in strains with a proofreading-defective Pol δ because defective polymerases are less likely to dissociate from the template than the wild-type enzyme.
Mixing labeled RNA copies of the defective gene with cell extracts produces spliced BRCA1 RNA templates that are one exon short.
