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From 2012.igem.org

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Proteorhodopsin Notebook

6/22/12

Julia - transformed K572005 (proteorhodopsin gene from the Parts Registry)
Daisy - ordered primers for Polymerase Cycling Assembly (PCA) reaction to create a proteorhodopsin optimized for E. coli
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6/25/12

Chenxi - Transformed pKD46 into wild type MG1655 E.coli strain using electroporation; designed primers to PCR pKD4 Kan resistance gene for lambda red knockout of nuo and ndh genes (NADH dehydrogenases)
Julia - miniprepped K572005 and sent it in for sequencing
Daisy - made 50 uL aliquots of electrocompetent E. coli cells
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6/26/12

Chenxi - PCR pKD4 kan for nuo and ndh; ran gel
Julia - K572005 sequence is completely different from the one listed in the Parts Registry, but the sequence matches with a different part (contamination)
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6/27/12

Daisy - began PCA protocol: ran PCR to make the preassembly mix, IPIPE, and VPIPE constructs; ran gel electrophoresis on the PCR products to check that the PCRs worked
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6/28/12

Daisy - continued PCA protocol: ran PCR to make the CPEC and IPIPE (from existing IPIPE, not preassembly mix) constructs; transformed electrocompetent cells with CPEC+VPIPE (positive control; no change the protocol), CPEC-VPIPE (negative control; replaced VPIPE with sterile water), IPIPE+VPIPE (alternate positive control), and VPIPE (alternate negative control) and plated them
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6/29/12

Daisy - plate results: VPIPE and CPEC-VPIPE negative controls had no colonies, IPIPE+VPIPE had only one colony, CPEC+VPIPE had many colonies; started overnight cultures of IPIPE+VPIPE and CPEC+VPIPE constructs of proteorhodopsin
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6/30/12

Daisy - miniprepped the overnight cultures and measured their concentrations
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7/1/12


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7/2/12

Daisy - sent miniprep samples in for sequencing
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7/3/12

Daisy - sequencing results returned: IPIPE+VPIPE construct is incorrect; accidentally mixed the CPEC+VPIPE sequences (will redo)
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7/4/12

Daisy - regrew 3 CPEC+VPIPE overnight cultures and made glycerol stocks
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7/5/12

Daisy - miniprepped the CPEC+VPIPE cultures, measured their concentrations, and sent them in for sequencing
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7/6/12

Daisy -
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