Gelfand D H, Rudo N
J Bacteriol. 1977 Apr;130(1):441-4. doi: 10.1128/jb.130.1.441-444.1977.
Co-transduction experiments using P1-mediated reciprocal and three-factor crosses have been used to map two mutations affecting the aspartate and aromatic amino acid aminotransferases of Escherichia coli. tyrB-, which inactivates the tyrosine-repressible component of these activities is co-transducible with metA and malB; the gene order is metA-malB-tyrB. aspC-, which inactivates the nonrepressible aminotransferase with high activity for aspartate, maps between and is co-transducible with serC and pyrD.
利用P1介导的相互杂交和三因子杂交进行的共转导实验已用于对影响大肠杆菌天冬氨酸和芳香族氨基酸转氨酶的两个突变进行定位。tyrB-使这些活性中酪氨酸可阻遏的成分失活,它与metA和malB共转导;基因顺序是metA-malB-tyrB。aspC-使对天冬氨酸具有高活性的不可阻遏的转氨酶失活,它定位于serC和pyrD之间并与它们共转导。