BBa_K292002
1
BBa_K292002
pLac (LacI regulated) + Strong RBS
2009-10-18T11:00:00Z
2015-05-08T01:11:49Z
Part:BBa_R0010 <br>
Part:BBa_B0030, Designed by Vinay S Mahajan, Voichita D. Marinescu, Brian Chow, Alexander D Wissner-Gross and Peter Carr IAP, 2003. Group: NCBS, Prather Lab. <br>
This part contains the pLac promoter and a ribosome binding site (BBa_R0010 + BBa_B0030). The Lac promoter is constitutively activated, but it can be repressed by the Lac I repressor from E.coli. This promoter is really useful to control a gene expression by inactivating it with LacI repressor. When LacI is absent the gene should be expressed, and in the presence of LacI, pLac is inhibited. So this part is really suitable for gene expression control by inactivation of pLac with LacI.
We can use this part to control a failed feedback mechanism which induces the Lambda phage lytic cycle.
In E.Coli, pLac is a part of the lactose operon. LacI is constantly expressed and represses the pLac. In the presence of Lactose, LacI is inhibited and pLac is active and allows the transcription of beta-galactosidase. Lactose can be substituted by IPTG (Isopropyl β-D-1-thiogalactopyranoside).
This part already contains a strong RBS to begin directly a gene transcription.
false
false
_394_
0
5212
9
It's complicated
In stock
false
N/A
false
David Charoy
component2054545
1
BBa_R0010
component2054553
1
BBa_B0030
annotation2054545
1
BBa_R0010
range2054545
1
1
200
annotation2054553
1
BBa_B0030
range2054553
1
209
223
BBa_R0010
1
LacI
promoter (lacI regulated)
2003-01-31T12:00:00Z
2015-05-08T01:14:14Z
The Plac insert was PCR'd from the MG1655 strain of E.coli K12.
Released HQ 2013
Inverting regulatory region controlled by LacI (<bb_part>BBa_C0010</bb_part>, <bb_part>BBa_C0011</bb_part>, etc.) <p> The pLac regulatory region is a 243 base-pair sequence with standard BioBrick prefix and suffix sections on its ends. It contains two protein binding sites: CAP, which is generally present in E.coli and is assocciated with cell health and availability of glucose., and LacI, the Lac inhibitor <bb_part>BBa_C0010</bb_part> which binds in an dimerized cooperative manner to inhibit the transcription of the protein that follows. In the presence of lactose or IPTG, an analog of lactose, LacI is unable to correctly bind and inhibit transcription. This allows <bb_part>BBa_R0010</bb_part> to be used as a inverter or as a detector of lactose or IPTG.
false
true
_1_
0
24
7
In stock
false
<P> <P><P> LacI binds to this regulator. This part is incompatible with species containing active LacI coding regions. Lactose and IPTG disable the operation of LacI and this regulator. This part is incompatible with environments containing lactose or lactose analogs.
true
annotation1961221
1
end of LacI coding region (inactive)
range1961221
1
1
88
annotation1961225
1
-10
range1961225
1
161
166
annotation1961226
1
LacI binding site
range1961226
1
166
200
annotation1961223
1
CAP binding site
range1961223
1
89
126
annotation1961222
1
BBa_R0010
range1961222
1
1
200
annotation1961224
1
-35
range1961224
1
137
142
annotation1961227
1
start
range1961227
1
173
173
BBa_B0030
1
BBa_B0030
RBS.1 (strong) -- modified from R. Weiss
2003-01-31T12:00:00Z
2015-08-31T04:07:20Z
Released HQ 2013
Strong RBS based on Ron Weiss thesis. Strength is considered relative to <bb_part>BBa_B0031</bb_part>, <bb_part>BBa_B0032</bb_part>, <bb_part>BBa_B0033</bb_part>.
false
true
_44_46_
0
24
7
In stock
false
Varies from -6 to +1 region from original sequence to accomodate BioBricks suffix ("orig" in figure 4-14 of Ron Weiss thesis). <p>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 <a href="mailto:(bchow@media.mit.edu)">Brian Chow</a>
true
Vinay S Mahajan, Voichita D. Marinescu, Brian Chow, Alexander D Wissner-Gross and Peter Carr IAP, 2003.
annotation7025
1
BBa_B0030
range7025
1
1
15
annotation1702
1
RBS
range1702
1
8
12
annotation1701
1
RBS-1\Strong
range1701
1
1
15
BBa_R0010_sequence
1
caatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcggataacaatttcacaca
BBa_B0030_sequence
1
attaaagaggagaaa
BBa_K292002_sequence
1
caatacgcaaaccgcctctccccgcgcgttggccgattcattaatgcagctggcacgacaggtttcccgactggaaagcgggcagtgagcgcaacgcaattaatgtgagttagctcactcattaggcaccccaggctttacactttatgcttccggctcgtatgttgtgtggaattgtgagcggataacaatttcacacatactagagattaaagaggagaaa
igem2sbol
1
iGEM to SBOL conversion
Conversion of the iGEM parts registry to SBOL2.1
Chris J. Myers
James Alastair McLaughlin
2017-03-06T15:00:00.000Z