At the moment, we provide four options for modification: fluorescein attachment, CY5 attachment, rhomdaine attachment and thiol (sulfhydryl) attachment.

Fluorescein: a common fluorescent molecule. Excitement by blue light causes fluorescein to emit green light.

Rhodamine: a common fluorescent molecule. Excitement by green light causes rhodamine to emit red light.

CY5: a common fluorescent molecule. Excitement by green or red light causes CY5 to emit far red light.

Thiol (sulfhydryl): useful for protein conjugations. Thiolated proteins can bind to gold surfaces by a covalent gold-thiol bond (biosensors and SPR applications). A thiolated protein can be conjugated to another protein by a heterobifunctional crosslinker (a molecule that reacts with amines on one end and can also react with thiols on the other).

More choices for protein modification are coming soon.

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