IGEM:Peking University/2008/Notebook/Group 1/2008/07/28: Difference between revisions

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2. The middle one looks nicer--nearly no smearing phenomena, which suggests the following aspects MAY be reasons: a, shorter enzyme cutting time (since BamHI has potential spark activity); b, higher gel running volt (time to run gel becomes shorter); c, new K buffer (other materials are totally the same, including the enzyme containers).
2. The middle one looks nicer--nearly no smearing phenomena, which suggests the following aspects MAY be reasons: a, shorter enzyme cutting time (since BamHI has potential spark activity); b, higher gel running volt (time to run gel becomes shorter); c, new K buffer (other materials are totally the same, including the enzyme containers).
3. Longer time for digestion may generate some new bands, if not contamination in lane last but two of pic3...




Revision as of 10:40, 28 July 2008

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This part will be updated soon

Report: Testing result-Xili's plasmid-pADH-lac1/2/S/tet

Digestion-pADH-lac1/2-1/2-2/S/tet-ClaI-BamHI


Gel running and testing


Gel Picture: 080725-xili_plasmid_test-redigest

lanes:1kb marker, 100bp marker, lac1, lac2-1, lac2-2, lacS, tet, lambda marker


Transformation-xili-lac1-1/1-2/2-1/2-2/S-1/S-2/tet-1/tet-2(from two envelops)


Picking up colonies|Miniprep|digestion(40min)|Gel running(140V)


Gel Picture: 080728-xili_plasmid_test-redigest

Lanes: lambda marker, {lac2-2-1, lac2-2-2, lac2-2-3, lac2-2-4, lac2-2-5, lac2-2-6, lacS-2-1}0727miniprep, {lac1-1-1, lac2-2-1, lac2-2-2, lac2-2-3, lacS-1-1, lacS-2-1}0726miniprep, 100bp marker


Picking up colonies|Miniprep|digestion(90min)|Gel running(120V)


Gel Picture: 080728-xili_plasmid_test-redigest-longer_time

Lanes: {lac2-2-1, lac2-2-2, lac2-2-3, lac2-2-4, lac2-2-5, lac2-2-6, lacS-2-1}0727miniprep, lambda marker, {lac1-1-1, lac2-2-1, lac2-2-2, lac2-2-3, lacS-1-1, lacS-2-1}0726miniprep


Conlusion:

1. The plasmids are right from the enzyme cutting result: only 700bp bands, no 1.4kb bands, showing the exact fragment we need.

2. The middle one looks nicer--nearly no smearing phenomena, which suggests the following aspects MAY be reasons: a, shorter enzyme cutting time (since BamHI has potential spark activity); b, higher gel running volt (time to run gel becomes shorter); c, new K buffer (other materials are totally the same, including the enzyme containers).

3. Longer time for digestion may generate some new bands, if not contamination in lane last but two of pic3...



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