Collection: Biotins and Streptavidins

Biotins and Streptavidins — compiles PEG-conjugated biotin derivatives or reactive linkers together with their streptavidin counterparts in various conjugate forms, utilizing the biotin-streptavidin binding affinity as one of the strongest non-covalent interactions in biochemistry. This category provides molecular labeling and capture tools for biotechnology research.

Biotins and Streptavidins are used by molecular biology and biotechnology researchers to label proteins, antibodies, or nucleic acids for detection, purification, and immobilization on streptavidin-coated surfaces. Biotin derivatives with NHS, maleimide, or azide linkers facilitate specific conjugation to amine, thiol, or alkyne groups on target biomolecules, while fluorescently labeled streptavidin conjugates are commonly used in flow cytometry and research immunohistochemistry assays.

Example products in this collection: TCI U0145 127062-22-0 Sulfo-NHS-LC-Biotin (2mg*3), TCI B5546 1309649-57-7 Biotin-PEG4-Azide, TCI U0106 194041-66-2 Sulfo-NHS-LC-LC-Biotin, TCI B5560 663171-32-2 Biotin-PEG4-Amine, TCI T4259 TCO*-PEG3-Biotin equatorial isomer, TCI B5562 721431-18-1 Biotin-PEG4-propionic Acid, TCI T3885 Streptavidin R-PE Conjugate, TCI B5563 1808990-66-0 Biotin-PEG6-Maleimide.

Pay attention to the type of linker reactive group (NHS ester, maleimide, azide, or TCO), the PEG spacer length, and the form of the streptavidin conjugate (fluorescent, enzyme, or particle) to match the target biomolecule and the detection method being used. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.

Other categories at the same level under Bioconjugation, often used together in one laboratory workflow:

• PEGylation Reagents and PEG Spacers
• Copper-free Click Reaction Reagents
• Functionality Creating Reagents
• Zero-length Crosslinkers
• Functional Group Blocking Reagents
• N-Terminal Cysteine Residue-specific Conjugation Reagents

Back to Bioconjugation. For large-volume procurement, special packaging, or specific grades, contact the AMI Scientific team — the official distributor of TCI Japan in Indonesia — to check availability and lead time directly from Japan.