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Sequencing Library Preparation

UMMS Molecular Biology Core Labs logo

The MBCL offers library construction services for Illumina and PacBio platforms. These services include conversion of DNA or RNA into ligated & indexed libraries, size-selection, and QC by Fragment Analyzer and/or any other means necessary.

The Illumina library prep ticket can be found here as a printable version or as a fillable pdf.
PacBio library preps from DNA/cDNA starting material are carried out by the PacBio Core. All PacBio samples, regardless of source material, should be submitted through the PacBio Core. Email Maria.Zapp@umassmed.edu to discuss your project and/or request a ticket.

Material Requirements
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Required Material for Illumina Libraries
Illumina Library Types: Required Material*:
Genomic DNA 2-3 μg
Amplicon 1 μg
cDNA 1 μg
total RNA 2-5 μg
small RNA 50-100 ng
Required Material for PacBio RNA Libraries
PacBio Library Types: Required Material*:
total RNA for IsoSeq/cDNA library 1 - 2.5 μg

*Submissions with less than the minimum requirement can be submitted after approval by the Core. Email Maria.Zapp@umassmed.edu to discuss your project.

Sample Drop Off Locations:
Samples can be left in the labeled fridges at these locations
for 11:00 AM pickup each business day:
Biotech2 outside Suite 207
LRB 6th floor mailroom
AS8-2046 on top of the filing cabinet
Our shipping address for off-campus customers is
Rose-Gordon Bldg. Rm. 141, 222 Maple Ave, Shrewsbury, MA, 01545.
We strongly recommend NOT shipping for Friday delivery.

Tips for isolating material:
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1.  Samples should be suspended in water or EB. Other buffers or any contaminants could create problems with library preparation and be carried over into sequencing. Please avoid the use of glycogen whenever possible.

2.  NanoDrops and similar instruments frequently read concentrations higher (sometimes ten-fold more) than other methods of determining concentration. This is because the NanoDrop detects everything, including contaminants, in the sample. The Core recommends the use of other methods such as Qubit or Fragment Analyzer, or careful attention paid to NanoDrop calibration, 260/280, and 260/230 readings.

3.  Some suggested kits for DNA/RNA isolation are: (((coming soon!)))

UMMS Deep Sequencing Core logo linking to website

UMMS PacBio Core logo linking to website