| Antibody / Fab |
IgG, Fab, scFv (customer‑supplied or sourced) |
Maleimide–thiol (reduced hinge or engineered Cys), SPAAC, tetrazine‑TCO |
PLA/PEA, immuno‑PCR, spatial proteomics, barcoded IHC |
| Proteins / Enzymes |
Streptavidin, enzymes, binding domains |
NHS‑amine, SPAAC, CuAAC, oxime/hydrazone |
Capture systems, reporters, proximity assays |
| Peptides / CPPs |
Arg‑rich CPPs, targeting peptides |
Maleimide–thiol, NHS‑amine, click |
Cell uptake, trafficking, targeting |
| Lipids |
Cholesterol, stearyl, tocopherol |
Amide coupling, click, thiol–maleimide |
Membrane anchoring, delivery enhancement |
| Polymers / PEG |
PEG(n), multi‑arm PEGs |
NHS‑amine, maleimide–thiol, click |
PK tuning, spacing, solubility |
| Nanoparticles / Surfaces |
Gold, silica, magnetic beads, sensors |
Thiol–Au, silane chemistry, NHS‑amine, click |
Diagnostics, enrichment, biosensing |
| Small Molecules / Haptens |
Biotin, DIG, fluorophores, dyes |
NHS‑amine, click, oxime/hydrazone |
Detection, capture, imaging |