title: Definition of the Escherichia coli MC4100 genome by use of a DNA array.
abstract: We have used an Escherichia coli K-12 whole-genome array based on the DNA sequence of strain MG1655 as a tool to identify deletions in another E. coli K-12 strain, MC4100, by probing the array with labeled chromosomal DNA. Despite the continued widespread use of MC4100 as an experimental system, the specific genetic relationship of this strain to the sequenced K-12 derivative MG1655 has not been resolved. MC4100 was found to contain four deletions, ranging from 1 to 97 kb in size. The exact nature of three of the deletions was previously unresolved, and the fourth deletion was altogether unknown.
authors.affiliation: Howard Hughes Medical Institute, Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA.
authors.forename: Joseph E
authors.initials: JE
authors.lastname: Peters
authors.forename: Timothy E
authors.initials: TE
authors.lastname: Thate
authors.forename: Nancy L
authors.initials: NL
authors.lastname: Craig
mesh_terms: D004926:Escherichia coli / Q000145:classification / Q000235:genetics*; D029968:Escherichia coli Proteins / Q000235:genetics / Q000378:metabolism; D017353:Gene Deletion; D016680:Genome, Bacterial; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*
chemical_list: D029968:Escherichia coli Proteins