Meng et al. developed #BPGA, an enzyme-free in vivo Bxb1-ParA recombinase system in standard DH5α E. coli that iteratively stacks #multi-gene plant vectors, demonstrated by assembling a 9-TU, 41.551 kb andrographolide pathway construct. 🌿🤖 #PlantPhysiology #SyntheticBiology #MetabolicEngineering