Illumina adapter portfolio

08/11/20


The first step of sequencing is to construct a library from DNA or RNA. A library contains DNA inserts flanked on each side by an adapter, as shown in Fig. 1:

Figure 1: Schematic representation of a dual-indexed library fragment

Adapters contain:

  • Sequences that allow the library to bind and generate clusters on the flow cell (p5 and p7 sequences)
  • Sequencing primer binding sites to initiate sequencing (Rd1 SP and Rd2 SP)
  • Index sequences (Index 1 and, where applicable, Index 2), which are sample identifiers that allow multiplexing/pooling of multiple samples in a single sequencing run or flow cell lane.

Illumina offers a wide range of adapter kits to allow flexibility and multiple indexing strategies. Illumina adapter kits differ from one another based on the number of samples they support, the length and sequences of the indexes, as well as the chemistry by which they attach to the insert fragment.

The tables below list the product specifications of the Illumina adapter kits:

  • Plexity refers to the number of unique index sequences per kit
  • Index Lengths refers to the number of cycles of sequencing required to read Index 1 and Index 2, respectively

 

Ligation Based Adapters
Adapter Characteristics Plexity Index Lengths Compatible Library Prep kits
TruSeq™ DNA/RNA Single Indexes
Set A and B
Single Indexes
(Tubes)
24
(12 per set)
6 + 0 Nextera Mate Pair
TruSeq ChIP-Seq
TruSeq DNA Nano
TruSeq DNA PCR Free
TruSeq DNA Exome
TruSeq Methyl Capture EPIC (Set A only)
TruSeq RNA Exome
TruSeq RNA V2
TruSeq Stranded mRNA
TruSeq Stranded Total RNA
TruSight RNA Fusion
TruSight RNA PanCancer
TruSeq DNA/RNA CD Indexes Combinatorial Dual Indexes
(Plate)
96 8 + 8 TruSeq DNA Exome
TruSeq DNA Nano
TruSeq DNA PCR Free
TruSeq Stranded mRNA
TruSeq Stranded Total RNA
IDT for Illumina –
TruSeq DNA/RNA UD Indexes (and v2)
Unique Dual Indexes
(Plate)
24 or 96 8 + 8 TruSeq DNA Exome
TruSeq DNA Nano
TruSeq DNA PCR Free
TruSeq Stranded mRNA
TruSeq Stranded Total RNA
TruSight Tumor 170 and
TruSight Oncology Indexes
Combinatorial Dual Indexes (DNA),
Unique Dual Indexes (RNA)
(Tubes/Plate)
16 8 + 8 TruSight Oncology 500
TruSight Tumor 170
Unique Dual Indexes
(Tubes)
16 8 + 8 TruSight Oncology ctDNA
AmpliSeq CD Indexes
Set A-D for Illumina
Combinatorial Dual Indexes
(Plate)
384
(96 per set)
8 + 8 AmpliSeq Panels
AmpliSeq UD Indexes for Illumina Unique Dual Indexes
(Plate)
24 8 + 8 AmpliSeq Panels

 

PCR Based Adapters
Adapter Characteristics Plexity Index Lengths Compatible Library Prep kits
Nextera™ DNA CD Indexes Combinatorial Dual Indexes
(24 Index - Tubes, 96 Index - Plate)
24 or 96 8 + 8 Nextera DNA Exome
Illumina DNA Prep,
(M) Tagmentation1
Nextera XT Index Kit v2 Set A-D Combinatorial Dual Indexes,
compatible with bead-based normalization (BBN)
(Tubes)
384
(96 per set)
8 + 8 Nextera XT
Nextera XT Index Kit Combinatorial Dual Indexes,
compatible with bead-based normalization (BBN)
(Tubes)
24 8 + 8 Nextera XT
TruSeq Custom Amplicon Index Kit Combinatorial Dual Indexes,
compatible with bead-based normalization (BBN)
(Tubes)
96 8 + 8 TruSight Myeloid Sequencing Panel
R7XX/A5XX index kits Combinatorial Dual Indexes
(Tubes)
24 6 + 8 TruSight Tumor 15
48 or 384
(96 per set)
6 + 8 TruSeq Target RNA Expression
TruSight™ Rapid Capture Kits Combinatorial Dual Indexes
(Tubes)
1,2,4,24 or 96 8 + 8 TruSight Cancer
TruSeq Neurodegeneration
TruSight Cardio
TruSight Inherited Disease
TruSight One
TruSight Rapid Capture
IDT for Illumina -
DNA/RNA UD Indexes Set A-D,
Tagmentation3
Unique Dual Indexes
(Plate)
384 (96 per set) 10 + 10 Illumina RNA Prep with Enrichment,
(L) Tagmentation
Illumina DNA Prep,
(M) Tagmentation1
Illumina DNA Prep with Enrichment,
(S) Tagmentation2
Nextera XT
Illumina DNA PCR-Free Prep,
Tagmentation4

 

Ligation and PCR Based Adapters
Adapter Characteristics Plexity Index Lengths Compatible Library Prep kits
TruSeq Small RNA index Kit Set A-D Single Indexes
(adds RNA adapter by ligation, adds indexes by PCR)
(Tubes)
48 (12 per set) 6 + 0 TruSeq Small RNA
IDT for Illumina RNA UD Indexes
Set A-D, Ligation
Unique Dual Indexes
(adds Anchors by ligation, adds indexes by PCR)
(Plate)
384
(96 per set)
10 + 10 Illumina Stranded mRNA Prep, Ligation
Illumina Stranded Total RNA Prep,
Ligation with Ribo-Zero Plus
    1Formerly known as Nextera DNA Flex
    2Formerly known as Nextera Flex for Enrichment
    3Formerly known as IDT for Illumina Nextera DNA UD Indexes Set A-D
    4This library prep kit is validated with v1 sets A & B, and v2 sets C & D only

Useful links