TotalSeq™ Antibody Oligonucleotide Conjugation Services – TotalSeq™ and CITE-seq Focus

Antibody-oligonucleotide conjugates are required in a number of expanding applications, particularly in single cell multiomics where extensive data sets can be generated at the molecular level from a single cell. Cellular indexing of transcriptomes and epitopes by sequencing (CITE-seq) combines scRNA-Seq and Proteomics in one application, to quantify RNA and protein at the same time. This page, along with Biolegends TotalSeq™ eBook, explores the capabilities of custom antibody-oligo conjugations and their applications.

The TotalSeq product suite solution for comprehensive analysis of cellular processes

BioLegend’s first reagent for proteogenomics applications, TotalSeq™-A oligonucleotide-antibody conjugates, was designed for use with multiple single-cell sequencing platforms that rely on Poly-dT oligonucleotides as mRNA capture method (scRNA-seq). The antibodies integrate in the scRNA-seq workflow as by mimicking a natural mRNA, thanks to the poly-A oligonucleotide embedded in the sequence of the conjugated oligonucleotide. This constitute the capture portion of the oligonucleotide, which also contains a barcode that permanently labels a specific clone, and a PCR handle, which makes the conjugate compatible with Illumina® sequencing reagents and instruments.

They are also now working with compatible partners, and supporting new versions of genomics reagents and solutions, such as the Feature Barcoding technology from 10X Genomics. BioLegend now offer their TotalSeq™-B reagents, which are compatible with the Chromium Single Cell Gene Expression Solution (v3)

In addition, as the need to characterize complex systems grows, including specific immune response to pathogens and cancer for example, the study of cell types involved in mounting an adaptive immune response is imperative. To that end, single-cell analysis of T and B cells has increased as these key players will largely define the balance between health and disease. To support research in this field, BioLegend has expanded the TotalSeq™ suite and released compatible conjugates under the name TotalSeq™-C. These antibodies are compatible with the Chromium Single Cell Immune Profiling Solution.

View and order TotalSeq™ Products

TotalSeq™-A TotalSeq™-B TotalSeq™-C
10x Genomics compatibility Single Cell Gene Expression Solution (3’, v2 and v3) and
any system employing the poly-A tail capture method
Single Cell Gene Expression Solution (3’, v3) with Feature
Barcoding Technology and 10x
Genomics Data Analysis Software1
Single Cell Immune Profiling Solution
(5’) with Feature Barcoding technology
and 10x Genomics Data Analysis Software1
Capture sequence Poly-A [(A)30*A*A3] NNNNNNNNNGCTTTAA
Next Generation Sequencing compatibility Compatible with Illumina
Compatible with Illumina
Compatible with
Illumina instruments



  1. 10x Genomics Data Analysis Software does not support cell hashing analysis.
  2. N represents either randomly selected A, C, G, or T.
  3. These sequences are unique to the TotalSeq™-B and C conjugates, and were developed independently of the reagents used by researchers at the New York Genome Center (NYGC, All Totalseq™-B, C, and the NYGC antibodies are compatible with 10X Genomics solutions. However, protocols and additional reagents such as required primers may be different. Please follow the protocols when using TotalSeq™ reagents.
  4. The symbol * indicates a phosphorothioated bond, to prevent nuclease degradation.

Currently, products are guaranteed for 4 months. As BioLegend continues to work with this product line, guarantee time will be extended in the future.

Barcodes are placed between the PCR handle and the 3′ flanking sequence, and they are clone-specific. 10x Genomics Solutions compatible with TotalSeq™-B and TotalSeq™-C contain all the necessary reagents to process and amplify the oligos derived from BioLegend’s products for subsequent Illumina sequencing, meaning there is material to accommodate both RNA and antibody-derived tags (ADT) libraries.

For TotalSeq™-A use on the Single Cell Gene Expression Solution, v2 and v3 Kits, additional reagents for preparation of ADT libraries must be purchased. Please refer to our protocols (General TotalSeq™ and Hashtags) for a detailed reagent list.

TotalSeq™ Protocol

Download the TotalSeq™ e-book here

TotalSeq™ format antibodies are BioLegend’s proprietary patent pending technology. Contact us if you are interested in partnering with us around this technology.

Buyer is solely responsible for determining whether Buyer has all intellectual property rights that are necessary for Buyer’s intended uses of the BioLegend TotalSeq™ products. For example, for any technology platform Buyer uses with TotalSeq™, it is Buyer’s sole responsibility to determine whether it has all necessary third party intellectual property rights to use that platform and TotalSeq™ with that platform

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