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Table 6. Examples of Affinity Reagents and Their Applications (acronyms)

Examples

Applications

Obtained by Animal Immunization

IgG and IgM

Detection, purification

Obtained by in Vitro Methods (Affinity reagents based on antibody-like proteins)

Fab

Detection, purification, therapeutics

FV

Detection, purfication, crystallization

scFV

Detection, purfication, in vivo perturbation, therapeutics

Domain antibodies (VH, VL)

Detection, purfication, therapeutics

VHH (shark and camel heavy-chain antibody VH domains)

Detection, purfication

Fibronectin type 3 domain

Detection, purfication, in vivo perturbation

Affinity Reagents Based on Other Proteins (Scaffolds)

Affibody (protein A)

Detection, purfication

Anticalin (lipocalin)

Detection, purfication

Ankyrin repeats

Detection, purfication, in vivo perturbation

Thioredoxin

In vivo perturbation

Affinity Reagents Based on Other Molecules

Conbinatorial peptides

Detection, crystallization, in vivo perturbation

RNA or DNA aptamers

Detect, purification, in vivo perturbation

Small chemical molecules

In vivo perturbation