Crosslinking Reagents
Thermo Scientific™ SM(PEG)4 (PEGylated SMCC crosslinker)
Crosslink amines to sulfhydryls with these crosslinkers containing NHS-ester and maleimide groups at ends of water-soluble polyethylene glycol spacer arms (17.6 to 95.2A).
Thermo Scientific™ SIA (succinimidyl iodoacetate)
Crosslink amines to sulfhydryls with this very short crosslinker composed of NHS-ester and iodoacetyl (haloacetyl) groups at ends of a 3-atom (1.5A) spacer arm.
Thermo Scientific™ EZ-Link™ TFP Ester-PEG4-DBCO
An amine reactive heterobifunctional crosslinker which contains a dibenzylcyclooctyne (DBCO) group for copper-free click chemistry applications. The crosslinker can be used to label a variety of amine containing molecules such as proteins, biomolecules, or small molecules.
Thermo Scientific™ SMPB (succinimidyl 4-(p-maleimidophenyl)butyrate)
Crosslink amines to sulfhydryls with this mid-length crosslinker composed of NHS-ester and maleimide groups at ends of an aromatic, 10-atom (11.6A) spacer arm.
Thermo Scientific™ EGS (ethylene glycol bis(succinimidyl succinate))
Crosslink amines to amines with this membrane permeable crosslinker composed of NHS-ester groups and a 16.1A hydroxylamine-cleavable spacer arm.
Thermo Scientific™ PMPI (p-maleimidophenyl isocyanate)
Short (8.7A) hydroxyl-to-sulfhydryl crosslinker; isocyanate and maleimide groups; label -OH by urethane bonds for conjugation to cysteines by thioether bonds.
Invitrogen™ Succinimidyl 3-(2-Pyridyldithio)Propionate (SPDP)
The succinimidyl ester chemically reacts with primary amines and after mild reduction of the dithiol, it can react form a disulfide with other thiols.
Thermo Scientific™ AMAS (N-α-maleimidoacet-oxysuccinimide ester)
Crosslink amines to sulfhydryls with this very short crosslinker composed of NHS-ester and maleimide groups at ends of an aliphatic, 4-atom (4.4A) spacer arm.
Thermo Scientific™ Sulfo-EMCS (N-ε-maleimidocaproyl-oxysulfosuccinimide ester)
Crosslink amines to sulfhydryls with this mid-length crosslinker composed of sulfo-NHS-ester and maleimide groups at ends of a water-soluble, 8-atom (9.4A) spacer arm.
Thermo Scientific™ SMPH (Succinimidyl 6-((beta-maleimidopropionamido)hexanoate))
Crosslink amines to sulfhydryls with this long crosslinker composed of NHS-ester and maleimide groups at ends of an aliphatic, 12-atom (14.2A) spacer arm.
Thermo Scientific Pierce™ Pierce™ SM(PEG)2, No-Weigh™ Format
Thermo Scientific™ Pierce™ SM(PEG)2 is hetero-bifunctional crosslinker with N-hydroxysuccinimide (NHS) ester and maleimide groups that allow covalent conjugation of amine- and sulfhydryl-containing molecules.
Thermo Scientific Pierce™ Pierce™ SM(PEG)12, No-Weigh™ Format
Thermo Scientific™ Pierce™ SM(PEG)12 is hetero-bifunctional crosslinker with N-hydroxysuccinimide (NHS) ester and maleimide groups that allow covalent conjugation of amine- and sulfhydryl-containing molecules.
Thermo Scientific™ DTME (dithiobismaleimidoethane)
Crosslink sulfhydryls to sulfhydryls (cysteine residues) with this long, cleavable crosslinker composed of maleimide groups and 11-atom (13.3A) disulfide spacer arm.
Thermo Scientific™ Sulfo-SDA (Sulfo-NHS-Diazirine) (sulfosuccinimidyl 4,4'-azipentanoate)
Very short to mid-length (3.9 to 13.5A), amine-to-anything crosslinkers; NHS-ester and diazirine reactive groups; photoactivate with UV light (Amax 330 to 370nm).