May Patrick, Barthel Stefan, Koch Ina
BCB Junior Research Group, ZIB Berlin, Takustr.7, Berlin 14195, Germany.
Bioinformatics. 2004 Nov 22;20(17):3277-9. doi: 10.1093/bioinformatics/bth367. Epub 2004 Jun 24.
Protein Topology Graph Library (PTGL) is a database application for the representation and retrieval of protein topologies. Protein topologies are based on a graph-theoretical protein model at secondary structure level. Different views on protein topology are given by four linear notations for their characterization. Protein topologies can be derived at different description levels considering alpha- and beta-structures. The on-line search tool is based on an object-relational database and provides a query browser for data interrogation by string patterns, keyword queries and sequence similarity. Protein topologies are represented both as schematic diagrams and as three-dimensional images.
蛋白质拓扑图库（PTGL）是一个用于表示和检索蛋白质拓扑结构的数据库应用程序。蛋白质拓扑结构基于二级结构水平的图论蛋白质模型。通过四种线性表示法对蛋白质拓扑结构进行不同视角的表征。考虑到α-结构和β-结构，可在不同描述水平上推导蛋白质拓扑结构。在线搜索工具基于对象关系数据库，并提供一个查询浏览器，用于通过字符串模式、关键词查询和序列相似性进行数据查询。蛋白质拓扑结构既以示意图形式表示，也以三维图像形式表示。
