First 16 WGBS Library Prep for Danielle's Pocillopora Samples

Using the Zymo Pico Methyl Seq Library Prep Kit for the 1st 16 of Danielle’s Pocillopora DNA Samples for Whole Genome Bisulfite Sequencing

Goal Library prep 16 samples for WGBS
Results 15 samples were prepped successfully
Takeaways The sample that didn’t get prepped well was in a spin column that looked strange after the first spin. That may have caused a problem/the failure. Also it is super helpful to do the bisulfite conversion the day before to save ~2 hours. Even so doing 16 samples from BS cleanup takes an entire day of lab work and is teadious and long.

This library prep followed the exact protocol for the Zymo Pico Methyl Seq Kit from me. See that protocol for detailed descriptions of each steps. Tables and values specific for this prep are included below.

2020 09 24 DNA Dilution to 1ng/ul of all samples

Coral ID DNA for dilution to 1ng/ul (ul) 10mM Tris HCl for dilution to 1ng/ul (ul)
E3 2 19.7
E7 2 35.8
E14 2 12.86
C26 2 12.96
C31 2 28.9
C29 2 7.62
E13 2 29.7
C20 2 39.8
C18 2 27.4
C24 2 23.4
E10 2 20.7
C27 2 5.02
C22 2 13.54
E11 2 11.64
E4 2 8.16
C28 2 42.4
E6 2 14.66
C21 2 3.3
E8 2 3.98
E12 2 33.1
E5 2 33.4
C30 2 8.62
E1 2 13.1
C23 2 19.8
E16 2 22.8
C19 2 16.36
C25 2 37.4
E2 2 20.6
E9 2 20.8
C32 2 5.08
E15 2 5.42
C17 2 35.4

2020 09 24 Bisulfite Conversion

  • Samples used for first prep:
    • E3
    • E7
    • E14
    • C26
    • C31
    • C29
    • E13
    • C20
    • C18
    • C24
    • E10
    • C27
    • C22
    • E11
    • E4
    • C28
  • Followed exact steps as in protocol
  • Once the thermocycler program was done the samples were put in the 4 degree fridge overnight

2020 09 25

Post-BS Conversion cleanup

  • Followed exact steps as in the protocol
  • note: I noticed the spin column for E7 had residue all up one side of it after the first spin. I don’t know if it had been there before spinning and I had just not noticed. It sort of looked like the filter substance had gotten up the side of the spin column

Amplification with Prep-Amp Primers

  • Followed exact steps as in the protocol
  • Priming Master Mix calculations (PMM):
    • 2ul PrepAmp Buffer * 16.5 = 33ul
    • 1ul PrepAmp Primer * 16.5 = 16.5ul
  • PrepAmp Master Mix calculations (PAMM):
    • 1ul PrepAmp Buffer * 16.5 = 16.5ul
    • 3.75ul PrepAmp PreMix * 16.5 = 61.875ul
    • 0.3ul PrepAmp Polymerase * 16.5 = 4.95ul
  • Dilution calculation of PrepAmp Polymerase to add 0.5ul:
    • 0.3 PrepAmp Polymerase * 16.5 = 4.95ul
    • 0.2ul DNA elution buffer * 16.5 = 3.3ul

DNA Clean and Concentrator

  • Followed exact steps as in the protocol

First Amplification

  • Followed exact steps as in the protocol
  • 1st Amp Master Mix calculation:
    • 12.5ul Library Amp Mix * 16.5 = 206.25ul
    • 1ul Library Amp Primers * 16.5 = 16.5ul

Second DNA Clean and Concentrator

  • Followed exact steps as in the protocol

Second Amplification with Index Primers

  • Followed exact steps as in the protocol
  • Thermocycler program had 12 cycles
  • Table for components in tubes for amplifications:
Sample Volume DNA (ul) Volume Library Amp Mix (ul) Volume i5 Primer (10uM) Volume i7 Primer (10uM)
E3 12 14 1ul i5_ZM_UDI001 1ul i7_ZM_UDI001
E7 12 14 1ul i5_ZM_UDI002 1ul i7_ZM_UDI002
E14 12 14 1ul i5_ZM_UDI003 1ul i7_ZM_UDI003
C26 12 14 1ul i5_ZM_UDI004 1ul i7_ZM_UDI004
C31 12 14 1ul i5_ZM_UDI005 1ul i7_ZM_UDI005
C29 12 14 1ul i5_ZM_UDI006 1ul i7_ZM_UDI006
E13 12 14 1ul i5_ZM_UDI007 1ul i7_ZM_UDI007
C20 12 14 1ul i5_ZM_UDI008 1ul i7_ZM_UDI008
C18 12 14 1ul i5_ZM_UDI009 1ul i7_ZM_UDI009
C24 12 14 1ul i5_ZM_UDI010 1ul i7_ZM_UDI010
E10 12 14 1ul i5_ZM_UDI011 1ul i7_ZM_UDI011
C27 12 14 1ul i5_ZM_UDI012 1ul i7_ZM_UDI012
C22 12 14 1ul i5_ZM_UDI013 1ul i7_ZM_UDI013
E11 12 14 1ul i5_ZM_UDI014 1ul i7_ZM_UDI014
E4 12 14 1ul i5_ZM_UDI015 1ul i7_ZM_UDI015
C28 12 14 1ul i5_ZM_UDI016 1ul i7_ZM_UDI016

1X Bead Clean

  • Followed exact steps as in protocol
  • Samples were Qubited immediately so they were put on an ice bucket not frozen yet

Broad Range dsDNA Qubit

Sample Reading 1 (ng/ul) Reading 2(ng/ul) Average (ng/ul)
Standard 1 192 RFU - -
Standard 2 22769 RFU - -
E3 21 20.8 20.9
E7 too low - -
E14 21.8 21.6 21.7
C26 17.1 16.9 17
C31 9.84 9.88 9.86
C29 11.9 11.9 11.9
E13 20.8 21 20.9
C20 17.5 17.5 17.5
C18 13.2 13.2 13.2
C24 14.1 14 14.05
E10 18.4 18.3 18.35
C27 18.9 19 18.95
C22 10.4 10.4 10.4
E11 18.8 19 18.9
E4 18 17.9 17.95
C28 6.82 6.67 6.79

2020 09 28 D5000 TapeStation

Representative library trace: 2

Samples and Index Sequences

Coral ID i7 bases i5 bases
E3 CCGCGGTT AGCGCTAG
E7 TTATAACC GATATCGA
E14 GGACTTGG CGCAGACG
C26 AAGTCCAA TATGAGTA
C31 ATCCACTG AGGTGCGT
C29 GCTTGTCA GAACATAC
E13 CAAGCTAG ACATAGCG
C20 TGGATCGA GTGCGATA
C18 AGTTCAGG CCAACAGA
C24 GACCTGAA TTGGTGAG
E10 TCTCTACT CGCGGTTC
C27 CTCTCGTC TATAACCT
C22 CCAAGTCT AAGGATGA
E11 TTGGACTC GGAAGCAG
E4 GGCTTAAG TCGTGACC
C28 AATCCGGA CTACAGTT
E6 TAATACAG ATATTCAC
C21 CGGCGTGA GCGCCTGT
E8 ATGTAAGT ACTCTATG
E12 GCACGGAC GTCTCGCA
E5 GGTACCTT AAGACGTC
C30 AACGTTCC GGAGTACT
E1 GCAGAATT ACCGGCCA
C23 ATGAGGCC GTTAATTG
E16 ACTAAGAT AACCGCGG
C19 GTCGGAGC GGTTATAA
C25 CTTGGTAT CCAAGTCC
E2 TCCAACGC TTGGACTT
E9 CCGTGAAG CAGTGGAT
C32 TTACAGGA TGACAAGC
E15 GGCATTCT CTAGCTTG
C17 AATGCCTC TCGATCCA
Written on September 24, 2020