CGSC Strain#: 5422
Strain Designation: MA1030      Source of Strain: W.K. Maas
Sex: Hfr    Point of Origin#: 1, 12   Map Position: 96.71   Direction of Marker Transfer: Clockwise
Chromosomal Markers: λ^-, purF1, argR64, thiE1
Strain Comments:

• This is Maas' standard argR mutation, induced in A.J. Clark's ``double male" strain JC182.
• purF1-- is a very stable mutation and may be an intragenic deletion.
• thiE1 was formerly called thi-1

References:

• McFall, E 1967. Dominance studies with stable merodiploids in the D-serine deaminase system of Escherichia coli K-12. J. Bacteriol. 94(6):1982-8.