Enzyme Substrates

CCP peptide TFA is a synthetic cyclic citrullinated peptide (CCP) and used as the substrate for detecting anti-CCP antibodies serologically. CCP peptide TFA functions as a target for autoantibodies with a very high specificity for rheumatoid arthritis (RA).

Boc-Arg-Val-Arg-Arg-AMC hydrochloride (Boc-RVRR-AMC) is a synthetic fluorogenic substrate that is efficiently cleaved by furin.

MeOSuc-Ala-Ala-Pro-Val-pNA is a sensitive chromogenic substrate for human leukocyte and porcine pancreatic elastase.

Myelin Basic Protein (MHP4-14), a synthetic peptide comprising residues 4-14 of myelin basic protein, is a very selective PKC substrate (K_m=7 μM). Myelin Basic Protein is not phosphorylated by cyclic AMP-dependent protein kinase, casein kinases I and II, Ca²⁺/calmodulin-dependent protein kinase II, or phosphorylase kinase, and can be routinely used for the assay of protein kinase C with low background in the crude tissue extracts.

Mca-PLAQAV-Dpa-RSSSR-NH2 TFA is a fluorescent substrate peptide that can be used to detect ADAM9, ADAM10, and tumor necrosis factor-α converting enzyme (TACE/ADAM17). Mca-PLAQAV-Dpa-RSSSR-NH2 TFA is a fluorescence resonance energy transfer-based substrate, and its activity can be determined by changes in fluorescence intensity upon cleavage (Ex = 320 nm ; Em = 405 nm).

H-D-Phe-Pip-Arg-pNA acetate (S-2238 acetate) is a specific chromogenic peptide substrate for thrombin (Thrombin). The amide bond of H-D-Phe-Pip-Arg-pNA acetate is rapidly hydrolyzed by thrombin, producing a characteristic yellow absorbance at 405 nm, and the change in absorbance is proportional to thrombin activity. H-D-Phe-Pip-Arg-pNA acetate can be used in biochemical detection-related studies.

GSNKSKPK-NH2 TFA is a synthetic model peptide based on the c-Src N-terminal sequence and model peptide substrate for human NMT1 and NMT2.GSNKSKPK-NH2 TFA facilitates in vitro assays measuring transfer of myristate or X10 fatty acid moieties.

Ac-YVAD-AFC is the the fluorometric peptide substrate of caspase-1, with λ excitation of 400 nm and λ emission of 505 nm.

Dabcyl-QALPETGEE-Edans is a synthetic peptide substrate for fluorescence resonance energy transfer (FRET) detection of Sortase A (SrtA) enzymatic activity. Dabcyl-QALPETGEE-Edans is labeled at both ends with the fluorescent group Edans (donor) and the quencher Dabcyl (acceptor), respectively. Dabcyl-QALPETGEE-Edans's central sequence contains a conserved motif specifically recognized by SrtA. Dabcyl-QALPETGEE-Edans demonstrates high sensitivity in vitro assays, enabling precise determination of the half-maximal inhibitory concentration of SrtA.

Z-Phe-Arg-pNA is a substrate of Cathepsin L.

NFF-3 TFA, the peptide, is a selective MMP substrate. NFF-3 TFA selectively binds to MMP-3 and MMP-10 to be hydrolyzed. NFF-3 TFA is also cleaved by trypsin, hepatocyte growth factor activator, and factor Xa. Label NFF-3 TFA with a CyDye pair, Cy3/Cy5Q, can produce fluorescence in cell assays to detect cell activity.

Abz-Gly-p-nitro-Phe-Pro-OH is the fluorescent substrate angiotensin I converting enzyme (ACE-I) with 355 nm excitation and 405 nm emission wavelengths.

N-CBZ-Phe-Arg-AMC (Z-FR-AMC) TFA is a cathepsin substrate used in assessment activity of lysosomal cathepsin enzymes.

Boc-Leu-Gly-Arg-AMC is a fluorogenic AMC substrate for the convertases. Boc-Leu-Gly-Arg-AMC can be used in enzymatic assays.

5-FAM-TEGEARGSVILLK(5-TAMRA)K-NH2 TFA is a substrate for ADAMTS-4/ADAMTS-5, and can be used to detect ADAMTS-4 or ADAMTS-5 activity.

Z-Val-Val-Arg-AMC is a fluorescent peptide substrate that can be used to test the activity of cathepsins.

Suc-Ala-Pro-pNA is a peptide that serves as a substrate to detect the activity and stability of prolyl endopeptidase (PEP).

Boc-Gln-Arg-Arg-AMC acetate is a fluorogenic substrate for the determination of protease activity. Boc-Gln-Arg-Arg-AMC undergoes hydrolysis and releases the fluorescent product 7-amino-4-methylcoumarin (AMC). AMC is fluorescent under UV light and can emit a fluorescent signal.

MMP-1/MMP-9 Substrate, Fluorogenic is a fluorogenic substrate for MMP-1 and MMP-9.Ex/Em = 340/440 nm

Z-Phe-Leu-Glu-pNA is a chromogenic substrate for glutamyl endopeptidases. Z-Phe-Leu-Glu-pNA has been used as a synthetic substrate in the study of proteolytic enzymes, including trypsin treatment, subtilisin and chymotrypsin. Z-Phe-Leu-Glu-pNA plays an important role in hormone disorders such as prostate cancer and breast cancer.