蛋白酶底物

X-GAL (BCIG) 是一种使用广泛的显色 β-半乳糖苷酶底物。 其中β-半乳糖苷酶能够切割 X-GAL ，并可产生不溶性蓝色化合物。

4-MUNANA(4-Methylumbelliferyl-N-acetyl-α-D-Neuraminic Acid sodium salt) 是用于神经氨酸酶 (neuraminidase) 活性测定的荧光底物，是神经氨酸酶底物类似物。

ABTS diammonium salt (AzBTS-(NH4)2) 是辣根过氧化物酶的底物。

Boc-Gln-Ala-Arg-AMC hydrochloride 是一种荧光化合物，可作为胰蛋白酶 (trypsin)的底物，也可用于测定 TMPRSS2 的蛋白水解活性。

BCIP (BCIP p-toluidine salt) 是一种显色底物，可用于碱性磷酸酶活性的比色法检测。

Z-IETD-AFC 是 caspase-8 和颗粒酶 B 的荧光底物，可用于定量半胱天冬酶-8 或颗粒酶 B 的活性。

Dansylcadaverine (Monodansyl cadaverine) 是谷氨酰胺转胺酶的高亲和力底物，能阻断受体介导的多种配体的内吞作用。它是一种用于标记自噬空泡的荧光探针。

4-Methylumbelliferyl-β-D-glucuronide hydrate (MUG) 是一种荧光底物 (λex=362 nm，λem=445 nm)。

BCDA (5-bromo-4-chloroindoxyl acetate) 是酯酶的显色底物，可有效检测酯酶的活性。

Msr-Ratio（Msr-green）（Msr-green）是一种专为检测甲硫氨酸亚砜还原酶（MSR）活性而特别设计的比率荧光探针。其激发波长为375 nm，发射波长为550 nm。该探针能够在体外及活细胞内监测酶活性，对于研究MSR功能而言，是一种宝贵的工具。

Mca-PLAC(p-OMeBz)-WAR(Dpa)-NH2 is a fluorogenic substrate for matrix metalloproteinase-14 (MMP-14). Upon cleavage by MMP-14, 7-methoxycoumarin-4-acetyl (Mca) is released and its fluorescence can be used to quantify MMP activity. Mca displays excitation emission maxima of 328 420 nm, respectively.

Z-Arg-Arg-4MβNA triacetate 为特异性针对组织蛋白酶 B（cathepsin B）的底物，其降解后可释放荧光产物4MβNA（λex= 355 nm, λem= 430 nm）。

Mca-PLGL-Dpa-AR-NH2 是一种荧光肽MMP 底物。

Mca-Ala-Pro-Lys(Dnp)-OH, a specific quenched fluorogenic substrate for ACE2, enables the detection of ACE2 activity in various tissues including urinary, heart, and lung.

Fast Green free acid is a dye that resists acid once applied.

TFMU-ADPr作为监测聚ATP-核糖糖水解酶(PARG)活性的底物，以其释放的荧光团直接反映PAR水解酶总活性而常用。该化合物因具备优良的反应性、通用性、稳定性及易用性，成为体外评估小分子抑制剂及研究ATP-核糖基分解代谢酶调控的首选工具。

DABCYL-Glu-Arg-Nle-Phe-Leu-Ser-Phe-Pro-EDANS 为一种用于人类疟原虫天冬氨酰蛋白酶的荧光底物，属于荧光染料类。储存条件：需避光。

D-Ala-Lys-AMCA, a known substrate of proton-coupled oligopeptide transporter 1 (PEPT1), emits blue fluorescence and may be transported into Caco-2 cells and liver cancer cells.

L-Leu-AMC is a fluorogenic substrate for leucine aminopeptidase.1Upon enzymatic cleavage by leucine aminopeptidase, AMC is released and its fluorescence can be used to quantify leucine aminopeptidase activity. AMC displays excitation emission maxima of 340-360 440-460 nm, respectively. 1.Izquierdo, M., Lin, D., O’Neill, S., et al.Development of a high-throughput screening assay to identify inhibitors of the major M17-leucyl aminopeptidase from Trypanosoma cruzi using rapidfire mass spectrometrySLAS Discov.25(9)1064-1071(2020)

CUG is a fluorogenic substrate (λex=386, λem=445 nm, ε=32K).

4-Methylumbelliferyl phosphate disodium (4-MUP) 是一种阴离子有机磷酸酯，作为酸性和碱性磷酸酶（phosphatase）的荧光底物，同时也用作神经毒剂模拟剂。

Bz-FVR-AMC 是一种组织蛋白酶荧光底物，kcat Km 值为 1070 mM-1s-1。高浓度 BZ-FVR-AMC 对底物有抑制作用。储存方式：避光。

Z-DEVD-AMC 是一种选择性 caspase-3 底物，可通过荧光光谱法测量。 AMC 可用作基于 AMC 的酶底物 (包括基于 AMC 的半胱天冬酶底物) 的荧光参考标准。

Mca-YVADAP-Lys(Dnp)-OH 是caspase-1和血管紧张素转换酶 2 (ACE2) 的荧光底物。

Dnp-PLGLWA-DArg-NH2 TFA 作为MMP-1和MMP-9的荧光底物，能够用于定量测定MMPs的活性（Ex=280 nm, Em=360 nm）。

Thymolphthalein monophosphate disodium hydrate 是用于测定酸性及碱性磷酸酶显色底物。反应过程中释放的百里酚酞可增加介质pH，促使颜色产生并终止水解作用，特别适合于血清中前列腺磷酸酶的特异性检测。

Z-(L-Arg)-AMC is a fluorogenic substrate for trypsin, cathepsin B, and cathepsin H.1,2Upon enzymatic cleavage by trypsin, cathepsin B, or cathepsin H, 7-amino-4-methylcoumarin (AMC) is released and its fluorescence can be used to quantify trypsin, cathepsin B, and cathepsin H activity. AMC displays excitation emission maxima of 340-360 440-460 nm, respectively. 1.Zimmerman, M., Ashe, B., Yurewicz, E.C., et al.Sensitive assays for trypsin, elastase, and chymotrypsin using new fluorogenic substratesAnal. Biochem.78(1)47-51(1977) 2.Brindley, P.J., Kalinna, B.H., Dalton, J.P., et al.Proteolytic degradation of host hemoglobin by schistosomesMol. Biochem. Parasitol.89(1)1-9(1997)

RH 421 is an amphiphilic styryl dye.

Proteinase 3 (PR3, myeloblastin) is a polymorphonuclear leukocyte serine proteinase that degrades matrix proteins including fibronectin, laminin, vitronectin, and collagen type IV to generate antimicrobial peptides. Neutrophil elastase is a serine proteinase that is secreted by neutrophils during inflammation to destroy pathogens. Evaluating these enzymes is helpful to understanding inflammatory autoimmune processes. MeOSuc-AAPV-pNA is a highly sensitive peptide substrate that is hydrolyzed by both human and mouse neutrophil elastase and PR3, but not cathepsin G or chymotrypsin. Enzyme activity can be quantified by colorimetric detection of free p-nitroanilide at 405 nm.

Ac-EEVVAC-pNA 是一种显色底物，用于HCVNS3 蛋白酶的连续分光光度测定。EEVVAC 序列源自HCV 多聚蛋白的 5A-5B 切割连接。

Ac-ANW-AMC is a fluorogenic substrate for the β5i LMP7 subunit of the 20S immunoproteasome. [1] Upon cleavage, 7-amino-4-methylcoumarin (AMC) is released and its fluorescence can be used to quantify the activity of the β5i LMP7 subunit of the 20S immunoproteasome. AMC displays excitation emission maxima of 340-360 440-460 nm, respectively. Reference[1]. Winter, M.B., La Greca, F., Arastu-Kapur, S., et al. Immunoproteasome functions explained by divergence in cleavage specificity and regulation. eLife 6:e27364, (2017).

Fluorescein Di-β-D-Glucuronide 作为一款荧光探针，以其非侵入性的优势被广泛应用于裸鼠肠道细菌β-葡萄糖醛酸酶（βG）活性成像研究中。该探针通过成像技术有效揭示了肠道细菌β-葡萄糖醛酸酶在体内外的活性，进而为特定细菌β-葡萄糖醛酸酶抑制剂的药效学评估提供了重要工具。

Mca-P-Cha-G-Nva-HA-Dap(DNP)-NH2 是一种荧光底物，主要用于测定基质金属蛋白酶-1 (MMP-1)、MMP-3 和MMP-26的活性。

4-Methylumbelliferyl-β-D-galactoside (MUG) is a fluorogenic substrate for β-galactosidase (β-gal).1Hydrolysis of MUG by β-gal releases the fluorescent moiety 4-MU, which displays a pH-dependent excitation maximum of 330, 370, and 385 nm at pH 4.6, 7.4, and 10.4, respectively, and an emission maximum between 445-454 nm.2MUG has been used to detect β-gal activity in intact bacteria, yeast, and mammalian cells.1 1.Vidal-Aroca, F., Giannattasio, M., Brunelli, E., et al.One-step high-throughput assay for quantitative detection of β-galactosidase activity in intact Gram-negative bacteria, yeast, and mammalian cellsBiotechniques40(4)433-434(2006) 2.Zhi, H., Wang, J., Wang, S., et al.Fluorescent properties of hymecromone and fluorimetric analysis of hymecromone in compound dantong capsuleJ. Spectrosc.1(1)147128(2013)