T-DNA & Hormones
T-DNA genes work in eukaryotes (plants)!
Genetic engineering invented by bacteria...
Transfer mechanism
- similar to conjugation
- ssDNA transfer, site-specific nick at right border
- left border transfer frequently “ragged”
T-DNA hormone genes
- iaaM (tms-1), iaaH(tms-2) : enzymes for auxin, IAA
- ipt (tmr): enzyme for cytokinin (e.g. tranzeatin)