Using a fluorescent NBD amino acid, new protease substrates were developed that are attractive because of the excellent chemical stability and long wavelength of excitation (480 nm) of the NBD fluorophore. The fluorescent peptides are synthesized by Fmoc solid-phase peptide synthesis. An example peptide was efficiently immobilized onto a microarray surface using click chemistry, and its proteolysis was monitored by fluorescence imaging. Excellent site specificity was achieved for the protease. Fluorescent peptides are also used to monitor the conjugation efficiency onto a surface using a standard microarray scanner.
使用一种荧光NBD
氨基酸,开发了新的
蛋白酶底物,这些底物因其出色的
化学稳定性和长的激发波长(480 nm)而具有吸引力。通过Fmoc固相肽合成法合成了荧光肽。通过点击
化学法有效地将一种肽固定在微阵列表面上,并通过
荧光成像监测其蛋白
水解过程。对该
蛋白酶实现了极佳的位点特异性。荧光肽还被用于使用标准微阵列扫描仪监测表面上的偶联效率。