title: A comprehensive resource for integrating and displaying protein post-translational modifications.
abstract: BACKGROUND
  Protein Post-Translational Modification (PTM) plays an essential role in cellular control mechanisms that adjust protein physical and chemical properties, folding, conformation, stability and activity, thus also altering protein function.
  
  
  RESULTS
  dbPTM (version 1.0), which was developed previously, aimed on a comprehensive collection of protein post-translational modifications. In this update version (dbPTM2.0), we developed a PTM database towards an expert system of protein post-translational modifications. The database comprehensively collects experimental and predictive protein PTM sites. In addition, dbPTM2.0 was extended to a knowledge base comprising the modified sites, solvent accessibility of substrate, protein secondary and tertiary structures, protein domains, protein intrinsic disorder region, and protein variations. Moreover, this work compiles a benchmark to construct evaluation datasets for computational study to identifying PTM sites, such as phosphorylated sites, glycosylated sites, acetylated sites and methylated sites.
  
  
  CONCLUSIONS
  The current release not only provides the sequence-based information, but also annotates the structure-based information for protein post-translational modification. The interface is also designed to facilitate the access to the resource. This effective database is now freely accessible at http://dbPTM.mbc.nctu.edu.tw/.
authors: Department of Biological Science and Technology, Institute of Bioinformatics and Systems Biology, National Chiao Tung University, Hsin-Chu 300, Taiwan. francis.bi93g@nctu.edu.tw
authors: Tzong-Yi
authors: TY
authors: Lee
authors: Justin Bo-Kai
authors: JB
authors: Hsu
authors: Wen-Chi
authors: WC
authors: Chang
authors: Ting-Yuan
authors: TY
authors: Wang
authors: Po-Chiang
authors: PC
authors: Hsu
authors: Hsien-Da
authors: HD
authors: Huang