Light is the most obvious candidate, as holography allows us to generate complex patterns with well defined edges in 3D. After examining a number of light sensing pathways, we decided to utilise a native pathway involving YtvA, which is a protein used by ''B. subtilis'' to detect blue light. YtvA triggers a cascade of interactions, but some way down the chain, a molecule called sigma B (σ<sub>B</sub>) is produced. This, in turn, boosts the synthesis of YtvA. | Light is the most obvious candidate, as holography allows us to generate complex patterns with well defined edges in 3D. After examining a number of light sensing pathways, we decided to utilise a native pathway involving YtvA, which is a protein used by ''B. subtilis'' to detect blue light. YtvA triggers a cascade of interactions, but some way down the chain, a molecule called sigma B (σ<sub>B</sub>) is produced. This, in turn, boosts the synthesis of YtvA. |