title: Acinetobacter sp. ADP1: an ideal model organism for genetic analysis and genome engineering.
abstract: Acinetobacter sp. strain ADP1 is a naturally transformable gram-negative bacterium with simple culture requirements, a prototrophic metabolism and a compact genome of 3.7 Mb which has recently been sequenced. Wild-type ADP1 can be genetically manipulated by the direct addition of linear DNA constructs to log-phase cultures. This makes it an ideal organism for the automation of complex strain construction. Here, we demonstrate the flexibility and versatility of ADP1 as a genetic model through the construction of a broad variety of mutants. These include marked and unmarked insertions and deletions, complementary replacements, chromosomal expression tags and complex combinations thereof. In the process of these constructions, we demonstrate that ADP1 can effectively express a wide variety of foreign genes including antibiotic resistance cassettes, essential metabolic genes, negatively selectable catabolic genes and even intact operons from highly divergent bacteria. All of the described mutations were achieved by the same process of splicing PCR, direct transformation of growing cultures and plating on selective media. The simplicity of these tools make genetic analysis and engineering with Acinetobacter ADP1 accessible to laboratories with minimal microbial genetics expertise and very little equipment. They are also compatible with complete automation of genetic analysis and engineering protocols.
authors.affiliation: The Scripps Research Institute, BCC-379, 10550 N. Torrey Pines Road, La Jolla, CA 92037, USA.
authors.forename: David
authors.initials: D
authors.lastname: Metzgar
authors.forename: Jamie M
authors.initials: JM
authors.lastname: Bacher
authors.forename: Valérie
authors.initials: V
authors.lastname: Pezo
authors.forename: John
authors.initials: J
authors.lastname: Reader
authors.forename: Volker
authors.initials: V
authors.lastname: Döring
authors.forename: Paul
authors.initials: P
authors.lastname: Schimmel
authors.forename: Philippe
authors.initials: P
authors.lastname: Marlière
authors.forename: Valérie
authors.initials: V
authors.lastname: de Crécy-Lagard
mesh_terms: D000150:Acinetobacter / Q000235:genetics* / Q000254:growth & development; D001483:Base Sequence; D003470:Culture Media; D017353:Gene Deletion; D005818:Genetic Engineering; D016680:Genome, Bacterial; D008957:Models, Genetic; D009154:Mutation; D010641:Phenotype; D016133:Polymerase Chain Reaction; D014169:Transformation, Bacterial
chemical_list: D003470:Culture Media