title: Genotyping methods.
abstract: Genotyping allows for the identification of bacterial isolates to the strain level and provides basic information about the evolutionary biology, population biology, taxonomy, ecology, and genetics of bacteria. Depending on the underlying question and available resources, Pseudomonas aeruginosa strains may be typed by anonymous fingerprinting techniques or electronically portable sequence-based typing methods such as multiple locus variable number tandem repeat (VNTR) analysis (MLVA), multilocus sequence typing, or oligonucleotide microarray. Macrorestriction fragment pattern analysis is a genotyping method that is globally applicable to all bacteria and hence has been and still is the reference method for strain typing in bacteriology. Agarose-embedded chromosomal DNA is cleaved with a rare-cutting restriction endonuclease and the generated 20-70 fragments are then separated by pulsed-field gel electrophoresis. The chapter provides a detailed step-by-step manual for SpeI genome fingerprinting of Pseudomonas chromosomes that has been optimized for SpeI fragment pattern analysis of P. aeruginosa.
authors.affiliation: Clinical Research Group, Clinic for Pediatric Pneumology, Allergology and Neonatology, Hanover Medical School, Hanover, Germany, tuemmler.burkhard@mh-hannover.de.
authors.forename: Burkhard
authors.initials: B
authors.lastname: Tümmler
mesh_terms: D004269:DNA, Bacterial / Q000235:genetics; D015252:Deoxyribonucleases, Type II Site-Specific / Q000378:metabolism; D016521:Electrophoresis, Gel, Pulsed-Field; D060005:Genotyping Techniques / Q000379:methods*; D011549:Pseudomonas / Q000235:genetics*; D012685:Sepharose
chemical_list: D004269:DNA, Bacterial; D012685:Sepharose; C056436:endodeoxyribonuclease SpeI; D015252:Deoxyribonucleases, Type II Site-Specific