AT850      Source of Strain:
Hfr Point of Origin#:
2A Map Position:
12.20 Direction of Marker Transfer:
Counterclockwise Chromosomal Markers: relA1
, metB1Strain Comments:
- thyA28-- Strains with this marker must have their medium supplemented with thymine (25ug/ml). This is true even for rich medium such as LB. Otherwise thymine starvation can lead to thymineless death.