CGSC Strain#: 5563
Strain Designation: JC5412      Source of Strain: A.J. Clark
Sex: Hfr    Point of Origin#: 45   Map Position: 65.00   Direction of Marker Transfer: Counterclockwise
Chromosomal Markers: thr-300, λ^-, sbcA8(Rac-8 del.), relA1, recB21, rpsE2300(SpcR), ilv-318, thiE1
Strain Comments:

• sbcA8(Rac-8 del.)-- is a deletion that removes a large part of rac and extends into the bacterial chromosome.
• sbcA8(Rac-8 del.) was formerly called sbcA8
• thiE1 was formerly called thi-1
• Rac-8 del. = may delete ca. 1/2 of Rac
• SpcR = spectinomycin resistant

References:

• Clark, A.J. 1967. The beginning of a genetic analysis of recombination proficiency. J.Cell.Physiol. 70:165-180
• Willetts, N.S., A.J. Clark 1969. Characteristics of some multiply recombination-deficient strains of Escherichia coli. J.Bacteriol. 100:231-239
• Willetts, N.S., D.W. Mount 1969. Genetic analysis of recombination-deficient mutants of Escherichia coli K-12 carrying rec mutations contrasducible with thyA. J.Bacteriol. 100:923-934