Already, we're eliminating the need for internally-directed self assembly by using bioprinters (essentially machines like the Makerbot replicator that print living cells rather than plastic) to directly print the final form of tissues and organs -- and perhaps one day organisms. Here, assembly is controlled externally by computer software so that biological self-assembly (and the DNA code required for it) is unnecessary. Combined with metabolic engineering and stem cell technologies, this should give developers a powerful suite of design tools for making a wide range of biomaterials (think replacement organs and much more), including hybrid systems that are part biological, part made of conventional materials -- useful for things like biochip-based sensors.
Andrew Hessel: 3 Gigabits of Genetic Code