The ability to write a stable record of identified molecular events into a specific genomic locus would enable the examination of long cellular histories and have many applications, ranging from developmental biology to synthetic devices. We show that the type I-E CRISPR (clustered regularly interspaced short palindromic repeats)-Cas system of Escherichia coli can mediate acquisition of defined...

Summary Bacterial type II toxin-antitoxin (TA) modules encode a toxic protein that downregulates metabolism and specific antitoxin binds inhibits the toxin during normal growth. In non-typeable Haemophilus influenzae, common cause of infections in humans, vapXD locus was found to constitute functional TA module contribute pathogenicity; however, mode action VapD mechanism...

CRISPR (clustered regularly interspaced short palindromic repeats) arrays and Cas (CRISPR-associated) proteins confer acquired resistance against mobile genetic elements in a wide range of bacteria and archaea. The phytopathogen Pectobacterium atrosepticum SCRI1043 encodes a single subtype I-F CRISPR system, which is composed of three CRISPR arrays and the cas operon encoding Cas1, Cas3 (a Cas2...