Team:Groningen/Notebook/3 September 2009

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Revision as of 13:51, 3 September 2009

Wet

LB-medium is badly needed!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

GVP Cluster

EM pictures

→ TODO Today we will try to get some Electon microscopy pictures of the gas vesicle producing bacteria from the ON cultures.

Orinigal pNL29 iptg-GVP and the biobricks ars-GVP and

→ TODO Choose colonies from plates for growth of E.coli TOP10 with GVP behind LAC/pBAD (+RBS) promoter in pSB1AC3

→ TODO Make glycerol stocks of pBad/araC, pBad/araC+RBS+GVP, and pLacI+RBS+GVP (both in pSB1A2 and pSB1AC3 plasmid)

→ TODO Test control of bouyancy in Saline solution (grow plates with GVP constructs)

→ TODO Order synthetic DNA for GVP

→ TODO Order primer for PstI site removal

→ TODO Test promoter strenght compared to BBa_J23101 promoter (Sven)

→ TODO Enter sequences of constructs to Sandbox

Colonies on Plates

→ The plates showed normal colony growth.

O.n. precultures

→ All twelve o.n. precultures showed bacterial growth, and could be used to isolate plasmid. The first four are registry vector pSB2K3 with RFP as reporter (plate 1, 7C) which were transformed on tuesday. The isolated plasmid is used to house all GVP constructs to combine with the vector pSB1AC3 with transporter and accumulation genes.

→ The next eight tubes contain our own designed biobricks and isolated plasmid will be sent to the registry on friday!

www.sigmaaldrich.com

Plasmid Purification

Plasmid isolation was performed on the cultures of E.coli TOP10 containing the above mentioned plasmids with the "Sygma-Aldrich™ [http://www.sigmaaldrich.com/life-science/molecular-biology/dna-and-rna-purification/plasmid-miniprep-kit.html GenElute™] Plasmid Miniprep Kit".

• From each tube 4mL of culture was collected in a 2.0mL cup, and the cells were pelleted by centrifugation for 1 min. at max. speed and the supernatant discarded.
• Plasmids were eluted with 30μL MQ and stored in the fridge

Concentrations

Restriction for Assembly

The vector [http://partsregistry.org/wiki/index.php?title=Part:BBa_J61035 BBa_J61035] containing the [http://partsregistry.org/Part:BBa_K190015 pArsR], [http://partsregistry.org/Part:BBa_K190016 pZntR], and [http://partsregistry.org/Part:BBa_K190017 pCueO] with [http://partsregistry.org/Part:BBa_I750016 GVP] composite parts were cut with PstI and EcoRI to create correct ends for insert into [http://partsregistry.org/Part:pSB2K3 pSB2K3], which was also cut with EcoRI and PstI (4x).

Restriction was kept at 37C for 40 min. and put on ice until used for gel purification.

Purification

→ From left to right: 1kB ladder, pSB2K3 (no.1, no.2, no.3, and no.4), J61035-pArsR-GVP , Empty Slot, J61035-pZntR-GVP, Empty Slot, J61035-pCueO-GVP

A "Agarose Gel DNA Extraction Kit" [http://www.roche-applied-science.com/pack-insert/1696505a.pdf Standard Protocol] from Roche Applied Science.

→ In step ten, 30μL MQ was added to the dry pellet and incubated at room temperature.

Concentrations

Transporters

Metal Accumulation

• Send MBP-ArsR for sequencing again
• Send pLow-fMT for sequencing
• Send pLac-fMT for sequencing

Vectors

Dry