Kun:LabNotes/ExonomeSeq/2009-5-23: Difference between revisions

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   ddH2O                      2ul     
   ddH2O                      2ul     


   37C 15mins.
   37C 15mins. Combined two tubes for each library.
   Purified with MinElute cloumn. Elute in 18ul H2O.
   Purified with MinElute cloumn. Elute in 18ul H2O.



Revision as of 21:34, 23 May 2009

Shotgun library construction

  • Start with four normalized and size-selected libraries captured from PGP1-3, NA12878 (prepared by Alice Li). The estimated concentration is ~2ng/ul each.

PCR with dUTP

                                      x 4 x 4
   Template:                   1ul
   2x EconoTaq Master Mix     50ul      800
   100uM AmpF6.3NH2          0.2ul      3.2
   100uM AmpR6.3NH2          0.2ul      3.2
   10mM dUTP                 0.6ul      9.6
   50x SYBG I                0.4ul      6.4
   H2O                        48ul      770
   94C 3min -> 9 cycles of (94C 30sec -> 58C 30sec -> 72C 20sec) -> 72C 3min -> 4C
   Purified every 4x50ul for each amplicon with two MinElute column.
 
   A: 23ng/ul x 20ul
   B: 14ng/ul x 20ul
   C: 14ng/ul x 20ul
   D: 18ng/ul x 20ul
   Purified each of the remaining amplicons with one DNA concentrator-5 column, eluted with 20ul EB
   A: 6.3ng/ul x 20ul
   B: 6.2ng/ul x 20ul
   C: 6.8ng/ul x 20ul
   D: 4.8ng/ul x 20ul

USER digestion

   Qiaquick purified DNA         20ul
   USER enzyme                    2ul
   37C 1h

   DNA concentrator purified DNA         18ul
   USER enzyme                            1ul
   37C 1h

S1 nuclease digestion

 10 x S1 nuclease buffer:   3ul     
 DNA after USER digestion: 22ul    
 S1 nuclease (10U/ul):      2ul     
 ddH2O                      2ul     
 37C 15mins. Combined two tubes for each library.
 Purified with MinElute cloumn. Elute in 18ul H2O.
 A: 12ng/ul 
 B: 7.4ng/ul
 C: 7.5ng/ul
 D: 12ng/ul

End repair (Enzymatics End-repair Mix)

  Fragmented DNA  15ul
  dNTP           2.5ul
  10x buffer     2.5ul
  Enzyme mix       1ul
  H2O              4ul
  Incubate at RT for 30 minutes 
  Purified with Qiaquick column.
  Select the ~100bp fragments with 2% SizeSelect gel

Adaptor ligation(Enzymatic T4 ligase vs. NEB QuickLigase)

                            NEB     
  DNA                       20ul    
  2X Rapid Ligation buffer  25ul
  100uM Solexa_1 adaptor   0.5ul 
  100uM Solexa_2 adaptor   0.5ul   
  T4 DNA ligase(600U/ul)     1ul
  H2O                        3ul

Keep at room temperature (~25C) for 10 minutes. Purify with MinElute columns.

Nick translation

  DNA                  8ul
  10x ThermoPol buffer 1ul
  10mM dNTP          0.4ul
  Bst Pol (8U/ul)    0.5ul  
  65C 10min

PCR

                                  x2
  DNA                     10ul
  Solexa_PCR_up(10uM)      2ul
  Solexa_PCR_lo(10uM)      2ul
  2x iProof master mix    50ul
  50x SYBGI              0.4ul
  ddH2O                   36ul
  98C 30sec -> 8 cycles of (98C 10sec -> 65C 20 sec -> 72C 20sec) 
  5 cycles of (98C 10sec -> 72c 20sec) -> 72C 3min -> 4C hold.