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Team:BostonU/Backbones
From 2014.igem.org
| The work carried out by previous BU iGEM teams used destination vectors, or plasmid backbones, with high-copy origins of replication. These high-copy plasmids in our library would not allow for optimal performance of our multiplexed transcriptional units and larger constructs. Additionally, works upon which we are basing our complex circuit assembly do not use high copy origins in their devices due to this loss of correct functionality. Circuit behavior would be desynchronized with the presence of a high copy origin, as it causes overexpression of the plasmid in a cell, leading to a high amount of transcription and protein expression. For more complex circuits, this overexpression pushes the limit of the amount of ribosomes that can be sequestered for translation, in addition to straining the cell's protein degradation mechanisms. |
 Plasmid map of a MoClo Level 1 destination vector with original pMB1 origin of replication, LacZ fragment, and designed primers for backbone extraction. |
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