Proteins Analysis

BP Fluor 594 NHS ester is the most popular tool for modifying proteins or antibodies through the primary amines (Lys), amine-modified oligonucleotides, and other amine-containing biomolecules with BP Fluor 594 label. The labeling occurs most efficiently at pH 7-9 and forms a stable, covalent amide bond. BP Fluor 594 dye can be used for proteins labeling at high molar ratios without significant self-quenching, enabling brighter conjugates and more sensitive detection. BP Fluor 594 is bright, water-soluble, and pH-insensitive from pH 4 to pH 10 red-fluorescent dye with absorption and emission maxima at 590 and 617 nm, respectively. It can be used with the 561 nm and 594 nm laser lines. BP Fluor 594 dye conjugated to a variety of antibodies, peptides, proteins, tracers, and amplification substrates often used for generation of stable signal in imaging and flow cytometry.

(E)-BSPOTPE is the E configuration of BSPOTPE (HY-W856375A). BSPOTPE binds Human serum albumin (HSA) (HY-P1956), exhibits aggregation-induced emission (AIE) phenomenon. BSPOTPE shows selectivity for albumin (such as HSA and BSA), but has no obvious fluorescence response to other proteins and DNA. BSPOTPE can be used as fluorescent probe for HSA.

NBDA (4-(α-N-L-alanine)-NBD) is a structural and functional analogue of the 2,4-dinitrophenyl group (DNP). NBDA can be used to detect and characterize antinitroaromatic antibodies, even in crude preparations, and possibly on cell surfaces.

DCDAPH (Compound 2c) is a novel smart NIRF probe for detection of β-amyloid (Aβ) plaques (λ_ex/λ_em=597/665 nm in PBS). DCDAPH shows high affinity for Aβ aggregates (K_i=37 nM, K_d=27 nM). DCDAPH shows good blood brain barrier permeation and can meet most of the requirements for the detection of Aβ plaques both in vitro and in vivo.