H-Lys-AMC

H-Lys-AMC is a lysine-based amino acid derivative bearing a free -NH2 on the ε-amino side chain and an AMC fluorophore (7-amino-4-methylcoumarin) attached through an amide linkage, yielding a chiral, primary-amino-containing construct that functions as a sensitive substrate analog. The molecule combines a stereodefined α-amino acid framework with a coumarin chromophore that exhibits strong fluorescence upon enzymatic or chemical transformation, while the terminal amide and amine groups provide defined sites for derivatization, immobilization, or controlled conjugation. The lysine side-chain functionality enables selective reactions at the ε-nucleophile and supports peptide-like coupling chemistry when incorporated into larger synthetic sequences. As an analytical and biochemical research intermediate, H-Lys-AMC can be employed to generate fluorescent readouts and downstream labeled lysine derivatives that map to lysine recognition motifs in enzyme and protein systems.

1. Enzyme Activity Assays

H-Lys-AMC is applied in biochemical assay development for proteases and peptidases that recognize lysine-containing substrates, where the AMC group serves as a fluorescent reporter. The lysine α-amino acid scaffold and ε-amino functionality enable substrate mimicry of lysine-dependent cleavage or processing events, while the amide-linked AMC provides a cleavable or reactive handle that translates molecular recognition into measurable fluorescence. The stereochemistry of the lysine center supports consistent binding geometry in enzyme active sites, improving interpretability of structure-function studies. Fluorogenic readouts derived from H-Lys-AMC facilitate mechanistic comparisons across enzyme variants and inhibitor series, and the same scaffold can be extended to generate related lysine-AMC probes for broader substrate profiling in biochemical research.

2. Peptide Synthesis Probes

H-Lys-AMC is utilized in peptide chemistry as a lysine-derived building block for constructing fluorescent peptide substrates and peptidomimetic fragments. The presence of a lysine amino acid backbone with a defined side-chain amine enables peptide coupling strategies that incorporate the AMC-bearing lysine into larger sequences, supporting N- or side-chain functionalization depending on the coupling plan. The amide linkage to the coumarin fluorophore provides a stable motif suitable for downstream deprotection and purification workflows typical of protected amino acid chemistry. Incorporation of H-Lys-AMC into peptide analogs supports mapping of cleavage sites, substrate specificity, and sequence-dependent recognition in protein engineering and chemical biology, and it can be used to prepare fluorescent standards for method validation in peptide analytics.

3. Chemical Biology Labeling

H-Lys-AMC is suitable for chemical biology workflows that require lysine-targeted labeling or probe generation for studying protein interactions. The ε-amino group on the lysine residue can participate in controlled derivatization chemistry, enabling attachment to carriers, affinity tags, or surfaces while retaining the AMC reporter for fluorescence-based detection. The coumarin fluorophore provides a built-in signal that can be monitored without introducing additional reporting groups, simplifying downstream characterization of labeled biomolecules. H-Lys-AMC-derived conjugates can be applied to track lysine recognition, monitor binding events, and support comparative studies of molecular recognition in complex mixtures, aligning with amino acid derivatization and biomolecule modification practices.

4. Analytical Research Standards

H-Lys-AMC is employed in analytical research as a fluorescent lysine-based reference compound for method development, calibration, and assay qualification. The AMC fluorophore enables sensitive detection under conditions compatible with fluorescence instrumentation, while the lysine amino acid framework provides a chemically defined structure that can serve as a stable standard for substrate-related readouts. The defined amide and primary amine functional groups allow reproducible derivatization to generate additional standards such as labeled lysine analogs or internal controls. H-Lys-AMC can be used to support quantitative fluorescence measurements in enzyme assays, peptide cleavage monitoring, and coupling chemistry verification, reinforcing its role as a practical amino acid derivative for downstream analytical standard preparation.

5. Process Chemistry Intermediate

H-Lys-AMC is relevant to process chemistry and fine chemical synthesis as a chiral amino acid derivative intermediate that contains both a functional lysine handle and a robust fluorophore. The molecule's functional group pattern, including the coumarin-linked amide and the free ε-amino group, can support scalable synthetic planning for downstream derivatization into fluorescent substrate families and labeled lysine reagents. The stereodefined lysine center provides consistency across batches when used as a substrate mimic or probe precursor, which is important for reproducible assay performance in industrial biochemical research pipelines. H-Lys-AMC can also serve as a starting point for manufacturing of related AMC-tagged amino acid derivatives, enabling controlled generation of processable intermediates for specialty chemical production and applied biochemical tool development.

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