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SoluLINK® Bioconjugation

The SoluLINK Bioconjugation products offer unique features to help researchers and manufacturers label reagent consistently and measurably in 4-6 hours, as the HyNic-4FB conjugation reaction can be tracked spectrophotometrically. This ability to control the reaction avoids wastage of precious proteins caused to precipitate out of solution if they are over conjugated, and GMP standards can be achieved. 

With a range of supporting reagents, SoluLINK can assist with the bioconjugation required for a range of assays, such as ELISAs, affinity chromatography, flow cytometry, and bead assays. Gentle chemistries and stable bond formation – to 92°C and pH 2.0 - 10.0, means the SoluLINK reagent is a conjugation method of choice.   

SoluLINK bioconjugation technology is engineered for high-performance conjugation of all classes of biomolecules, including antibodies, proteins, peptides, oligonucleotides, carbohydrates, drugs and surfaces. The result is reliable, quantifiable labelling delivering ready-to-use conjugates at high yield.

Example of SoluLINK conjugations

Oligonucleotide-antibody conjugatesProximity Ligation Assays (PLA)
Oligonucleotide-KLH conjugatesAnti-Oligonucleotide antibody synthesis
Carbohydrates-KLH conjugatesProduction of anti-carbohydrates antibodies
Bacterial carbohydrate-bead conjugatesDiagnostic assays
siRNA-antibody conjugates with
disulfide cleavible linker
siRNA delivery
siRNA-cationic peptide conjugatessiRNA delivery
Drug-protein conjugatesDrug delivery
Drug-KLH conjugatesImmunodetection

Each step of the conjugation can be controlled to ensure ideal labelling of each biomolecule, and the final conjugation can be tracked using a spectrophotometer.

Conjugates can be stable for 6 months once prepared & purified and 4FB labelled reagents are often stable for many weeks. (HyNic labelling should be done just prior to conjugation to avoid dimer formation)  

<= Solulink's easy to use, linker-based technology.


Ancillary Reagents 

To give you ultimate flexibility, many of the SoluLINK reagents are available as separate reagents, enabling you to build your own conjugation.

A Type of conjugateB Type of moleculeC Reactive Group D SoluLINK Product


If using an Amino (NH2) then use:Linker 1S-HyNic (S-1002-105)
If using a Thiol (SH2) then use:MHPH (S-1009-010)
ProteinIf using an Amino (NH2) then use:Linker 2S-4FB (S-1004-105)
Protein -OligosProteinIf using an Amino (NH2) then use:Linker 1S-HyNic (S-1002-105)
If using a Thiol (SH2) then use:MHPH (S-1009-010)
OligoIf using a 3’ or 5’ Amino, then use:Linker 2S-4FB (S-1004-105)
Protein -MagnaLINK Beads conjugationMagnaLINK BeadsIf using 4FB Magnetic beadsLinker 1MagnaLINK 4FB Magnetic Beads (M-1004-010)
AB, other protein, R-PE, APC, perCP, HRP, AlkPhosIf using an Amino (NH2) then use:Linker 2S-HyNic (S-1002-105)
If using a Thiol (SH2) then use:MHPH (S-1009-010)

Instructions: SoluLINK technology requires 2 linkers to successfully conjugate 2 biomolecules to give you a quantifiable, controllable and stable result.

Step 1: Select type of conjugate (A)

Step 2: Select the 1st biomolecule (B) then select its reactive group (C). The SoluLINK product you require is in column D (Linker 1)

Step 3: Select the 2nd biomolecule (B) then select its reactive group (C). The SoluLINK product you require is in column D (Linker 2)

Step 4: Order the products referenced in steps 2 & 3 for a successful conjugation.


ChromaLINK™ Reagents 

ChromaLINK offers a quick way to label proteins with biotin or digoxigenin, taking approximately 2.5 hours labelling time, and 5 minutes to quantify – thanks to the incorporated bis-aryl hydrazone chromophore that  measures labelling using just a spectrophotometer.  There is a range of options depending on the solubility requirements of your protein, and the quantities of protein to be labelled.

ChromaLINKTM Biotin Labelling KitKit - labels 25ug to 1mgB-9007-105K
ChromaLINKTM One-Shot Antibody Biotinylation KitKit - labels 100ug of AbB-9007-009K
ChromaLINKTM One-Shot Antibody Biotinylation Kit (Large Scale)Large-Scale - labels 2mg of AbB-9007-020K
ChromaLINKTM One-Shot Antibody Biotinylation Kit (Custom Size)Labels any amountPlease Inquire
ChromaLINKTM​ Biotin Labelling Reagent (Sulfo Version Water Soluble)10mgB-1007-110
ChromaLINKTM​ Biotin Labelling Reagent (Sulfo Version Water Soluble)5 x 1.0mgB-1007-105
ChromaLINKTM​ Biotin Labelling Reagent (DMF Soluble)10mgB-1001-010
ChromaLINKTM​ Biotin Labelling Reagent  (DMF Soluble)5 x 1.0mgB-1001-105
ChromaLINKTM​ Biotin Malemide Reagent10mgB-1012-010
ChromaLINKTM​ Digoxigenin One-Shot Antibody Labelling KitKit - labels 100ug of AbB-9014-009K
ChromaLINKTM​​ Digoxigenin One-Shot Antibody Labelling KitLarge-Scale - labels 2mgB-9014-020K

Complete Kits

Kits containing all you need to simply label and purify your protein using SoluLINK or ChromaLINK technology. 

HRP- Antibody All-In-One Conjugation KitKit- conjugates 2x 100µg AbA-9002-001
R-PE- Antibody Conjugation KitKit- conjugates 2x 0.5mg AbP-9002-002
Protein-Protein Conjugation KitKit- labels 2x 650µg of protein (>7kDa)S-9010-1
Protein -Oligo Conjugation KitKit- labels 2x 650µg of protein to Oligo (20-120 nucleotides)S-9011-1
Fluorescein One-Shot Antibody Labelling KitKit- labels 2x 100µg of AbF-9001-009K
ChromaLINK ™ Biotin Labelling KitKit -Labels 25µg to 1mgB-9007-105K
ChromaLINK™ One-Shot Antibody Biotinylation KitKit – Labels 100µg of AbB-9007-009K
ChromaLINK ™ Digoxigenin One-Shot Antibody Labelling KitKit - Labels 100µg of AbB-9014-009K

Magnetic beads

The SoluLINK NanoLINK beads have been engineered with a unique streptavidin crosslinking to allow the highest biotin binding capacity for beads of their size – up to 12x higher than other brands.

Designed for use in applications such as antibody based cell separation, IVD Immunoassay development, ChIP and DNA/RNA binding protein isolation, immunoprecipitation and protein isolation and next gen sequencing target enrichment.

MoleculeNanoLINK (0.8um) binding capacityMagnaLINK (2.8um) binding capacity
Free Biotin>14 nmol/mg>12 nmol/mg
Biotinylated oligo (23-mer)>2.5 nmol/mg>0.8 nmol/mg
Biotinylated IgG (3 biotins per IgG)>250 ug/mg>112.6 ug/mg

The MagnaLINK beads offer exceptional uniformity in size, and prepared ready for covalent immobilization for user defined, high performance affinity purification schemes.  

The 4FB MagnaLINK magnetic beads offer an alternative to biotin binding, using the SoluLINK chemistry – this offers an efficient way to conjugate any HyNic labelled proteins and antibodies to beads, when compared to other existing methods.