Test: Tar-EnvZ attractant receiver (I3302.E0422)
Tests Tar-EnvZ attractant receiver device (ompF upstream version) by attaching TIPS output to CFP reporter.
Stephen Lee, Roshan Kumar, Joe Levine, Ziyan Chu (Polkadorks, IAP 2004)
Coding sequence for Tar-EnvZ fusion protein. Tar is the bacterial chemotaxis receptor for aspartate. EnvZ is an osmosensor kinase, which, through phosphorylation of OmpR, regulates transcription of porin genes. This fusion protein combines the extracellular and transmembrane domains of Tar with the intracellular domain of EnvZ. The fusion converts chemical binding of aspartate to production of transcription factors.
A silent point mutation was made at base 423 (A -> C) to eliminate an XbaI restriction enzyme site. The mutation was designed to match codons with similar frequencies of usage in E. coli.
constitutive promoter which outputs .4 TIPs point mutants of wild type rrnB promoter P1
RBS (Elowitz 1999) -- defines RBS efficiency
Varies from -6 to +1 region from original sequence to accomodate BioBricks suffix. No secondary structures are formed in the given RBS region. Users should check for secondary structures induced in the RBS by upstream and downstream elements in the +50 to -50 region, as such structures will greatly affect the strength of the RBS. Contact info for this part: Brian Chow
Vinay S Mahajan, Voichita D. Marinescu, Brian Chow, Alexander D Wissner-Gross and Peter Carr IAP, 2003.
Derived from the TE terminator of T7 bacteriophage between Genes 1.3 and 1.4 <genbank>V01146</genbank>.
Transcription terminator for the E.coli RNA polymerase.
Suggested by Sri Kosuri and Drew Endy as a high efficiency terminator. The 5' end cutoff was placed immediately after the TAA stop codon and the 3' end cutoff was placed just prior to the RBS of Gene 1.4 (before AAGGAG). Use anywhere transcription should be stopped when the gene of interest is upstream of this terminator.
Transcriptional terminator consisting of a 64 bp stem-loop.
Positively regulated, OmpR-controlled promoter. This promoter is taken from the upstream region of ompF. Phosphorylated OmpR binds to the three operator sites and activates transcription.
The promoter includes three OmpR binding sites: F1, F2, and F3. The promoter starts at -107 and goes up to the transcriptional start site at +1. A distant fourth binding site, F4, has been deleted. It is involved in negative regulation of ompF (Head, Tardy and Kenney, 1998), so its deletion is intended to make the promoter solely activating. The efficacy of this promoter versus the ompC upstream region (BBa_R0082) or the truncated ompC upstream region (BBa_R0083) is currently unknown.
enhanced cyan fluorescent protein derived from A. victoria GFP
Modified from <bb_part>BBa_E0021</bb_part>.
Cyan fluorescent protein (ECFP) reporter coding sequence without the Ribosome Binding Site. Modified with an LVA tail for rapid degradation of the protein and faster fall time for the emission.
BBa_E0022 cyan fluorescent protein is based on BioBrick part BBa_E0021. It has been modified to include a rapid degradation LVA tail, and includes the BioBrick standard assembly head and tail restriction sites. The RBS has been removed. The stop codon has been changed from TAA to a double stop codon TAATAA.
June Rhee, Connie Tao, Ty Thomson, Louis Waldman
Conversion of the iGEM parts registry to SBOL2.1