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Constructs & Parts

(1) MinC Construct and Inv & LLO Constructs on AMB-1

AMB-1 minC NYMU.jpg
AMB-1 Inv LLO.jpg
Fig. Design of minC construct on AMB-1
Backbone plasmid: pYMB
Fig. Design of Inv & LLO construct on AMB-1
Backbone plasmid: pRKm415

(2) Related Parts

We have created several parts on the basis of Biobrick. The expression will be shown on the partregistry webpage.

BBa_K624033 minC cell division inhibitor (revised)
BBa_K624034 revised minC primer (forward)
BBa_K624035 revised minC primer (reverse)
BBa_K624036 minC+mcherry
BBa_K624037 rbs+minC+mcherry
BBa_K624040 pT7-tetO+rbs+minC
BBa_K624045 Pmsp1(tetO) + rbs(Pmsp3) + minC + rbs(Pmsp3) + mcherry
BBa_K624056 pYMB essentials + rbs(Pmsp3) + minC
BBa_K624057 pYMB essentials + rbs(Pmsp3) + LLO
BBa_K624058 pYMB essentials + rbs(Pmsp3) + Inv

(3) Nested-PCR Primers for Various Strains

(i) nested-Inv

BBa_K624063 nested_Inv F (inter-strain nested primer)
BBa_K624064 nested_Inv R (inter-strain nested primer)

(ii) nested-LLO

BBa_K624065 nested_LLO F (inter-strain nested primer)
BBa_K624066 nested_LLO R (inter-strain nested primer)

(4) Results of PCR from genomic DNA

Gel invasin.png Gel LLO.png Gel minC.png
Fig. invasin PCR cloned from
Yersinia enterocolitica
Fig. LLO PCR cloned from
Listeria monocytogenes
Fig. minC PCR cloned from
E.coli K12 MG1655

(5) Expression of TetR Protein Enabled Regulation

Expression of tetR protein.png
Fig. From the left to right, there are separately marker labelled at 72kDa and 26kDa,
supernatant control, supernatant experiment, pellet control, pellet experiment.

Tetracyclin resistent protein and GFP were induced by IPTG to express in BL-21 E.coli strain for the confirmation of the construct.As SDS-PAGE shown above, there is no difference between supernatant control and experiment while tetracyclin resistent protein and GFP express in the pellet experiment.It is proved that the expression of tetracyclin resistent protein can enable the regulation.

Symbiosis within Human Glial Cells

(1) Magnetotactic bacteria were introduced into guanulocytes and monocytes by phagocytosis.(Tadashi Matsunaga et all. 1986)

Fig.The transmission electron micrograph(TEM) of a monocyte
that had ingested magnetotactic bacteria. The bar represents 5 μm.

(2) In our experiment, AMB-1 was introduced into primary mixed glial cells in vitro. Figures 1~4 show the photos captured under the microscope.

Check out BBa_K624032 for detailed characterization

Fig.1 primary mixed glial cell introduced with AMB-1 1
Fig.2 primary mixed glial cell introduced with AMB-1 2
Fig.3 primary mixed glial cell control 1
Fig.4 primary mixed glial cell control 2

Measurements of Construct tetR+rbs+gfp under Fluorescence Microscope

30.JPG 31.JPG 32.JPG

These are the measurements of our construct tetR+rbs+GFP(BBa_K624001) under fluorescence microscope. The picture on the left is from the control group of E. coli strain DH5-alpha. The middle is tetR+rbs+gfp in plasmid pSB1C3 in E. coli, while the right is from a plate without any bacilli. All graphs are measured in fixed exposure time. Construct of tetR+rbs+gfp which emits light is thought to be a leak phenomenon of plasmid, while RE digest has proved that the sequence length is correct, and further sequencing work is under operation.

gfp measurements under different excitation wavelengths


The expression of gfp is measured precisely under excitation wavelength from 475nm to 501nm, given the absorption wavelength 511nm. In our measurement, wavelength over 493nm yields high background, resulting in values of control group surging far beyond normal condition. Thus, 493nm is suggested as the best excitation wavelength, as it presents the highest emission light and the lowest of the control group.