Minnesota/14 July 2008

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Revision as of 16:48, 14 July 2008

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1. Plasmid DNA Purification Using the QIAprep: Use 2mL LB cultures of ligation products from 07-11-2008. Procedure:

a. Resuspend bacterial cells in 250uL Buffer P1 and transfer to microcentrifuge tube

b. Add 250 uL Buffer P2 and invert 4-6 times

c. Add 350uL Buffer N3 and mix immediately by inverting 4-6 times

d. Centrifuge for 10 minutes @ 13,000 rpm in a table-top centrifuge. White pellet will form (made up of cell debris).

e. Apply supernatants from step D to the QIA prep spin columns. Centrifuge for 30-60 seconds --> discard the flow through.

f. Wash the QIA prep spin column by adding 0.5mL (500uL) Buffer PB. Centrifuge for 30-60 seconds. Discard the flow through.

g. Wash QIA prep spin column by adding 0.75mL (750uL) Buffer PE. Centrifuge for 30-60 seconds. Discard the flow through.

h. Centrifuge for additional 1 minute to remove residual buffer.

i. Place the QIA prep spin column in a clean 1.5mL centrifuge tube. To elute DNA, add 50uL of Buffer EB (10mM Tris-Cl, pH 8.5) to center of spin column and centrifuge.

NOTE: Used Buffers to purify or washout any cell debris so only has DNA. Used spin column b/c the column binds to DNA (has DNA affinity) and all other solution will drain through.

2. Spectrophotometry: 'Spec' purified preps to check concentration of DNA in the ligated products. Refer Spectrophotometry Results link on Notebook page.

3. Double Digest: Refer to table below.

Parts	10x Buffer	BSA	H20	DNA	RE 1	RE 2
GFP (1250 ng/uL)	5.0uL	0.5uL	41.5uL	1.0uL	1.0uL, EcoRI	1.0uL, Spe1
Terminator	5.0uL	0.5uL	17.5uL	25.0uL	1.0uL, Xba1	1.0uL, Pst1
Control	4.0uL	7.0uL	0	0	10.0uL	1.0uL

@@ Line 33: / Line 33: @@
 |-
 |'''3. Double Digest:''' Refer to table below.
+{|border="1" align="left"
+|-
+!| Parts !! 10x Buffer !! BSA !! H20 !! DNA !! RE 1 !! RE 2
+|-
+|GFP (1250 ng/uL) ||5.0uL || 0.5uL ||41.5uL ||1.0uL ||1.0uL, EcoRI ||1.0uL, Spe1
+|-
+|Terminator ||5.0uL || 0.5uL||17.5uL ||25.0uL ||1.0uL, Xba1 ||1.0uL, Pst1
+|-
+|Control ||4.0uL || 7.0uL || 0|| 0|| 10.0uL ||1.0uL
+|-
+|}