Liu D-Q, Liu H, Shen H-B, Yang J, Chou K-C
Institute of Image Processing and Pattern Recognition, Shanghai Jiaotong University, Shanghai, China.
Amino Acids. 2007;32(4):493-6. doi: 10.1007/s00726-006-0466-z. Epub 2006 Nov 15.
A newly synthesized secretory protein in cells bears a special sequence, called signal peptide or sequence, which plays the role of "address tag" in guiding the protein to wherever it is needed. Such a unique function of signal sequences has stimulated novel strategies for drug design or reprogramming cells for gene therapy. To realize these new ideas and plans, however, it is important to develop an automated method for fast and accurately identifying the signal sequences or their cleavage sites. In this paper, a new method is developed for predicting the signal sequence of a query secretory protein by fusing the results from a series of global alignments through a voting system. The very high success rates thus obtained suggest that the novel approach is very promising, and that the new method may become a useful vehicle in identifying signal sequence, or at least serve as a complementary tool to the existing algorithms of this field.
细胞中新合成的分泌蛋白带有一种特殊序列,称为信号肽或信号序列,它在引导蛋白质到达所需位置时起着“地址标签”的作用。信号序列的这种独特功能激发了药物设计的新策略或对细胞进行重新编程以用于基因治疗。然而,要实现这些新想法和计划,开发一种快速准确识别信号序列或其切割位点的自动化方法很重要。本文通过投票系统融合一系列全局比对的结果,开发了一种预测查询分泌蛋白信号序列的新方法。由此获得的非常高的成功率表明,这种新方法很有前景,并且该新方法可能成为识别信号序列的有用工具,或者至少作为该领域现有算法的补充工具。