title: SCUD: Saccharomyces cerevisiae ubiquitination database.
abstract: BACKGROUND
  Ubiquitination is an important post-translational modification involved in diverse biological processes. Therefore, genomewide representation of the ubiquitination system for a species is important.
  
  
  METHODS
  SCUD is a web-based database for the ubiquitination system in Saccharomyces cerevisiae (Baker's yeast). We first searched for all the known enzymes involved in the ubiquitination process in yeast, including E1, E2, E3, and deubiquitination enzymes. Then, ubiquitinated substrates were collected by literature search. Especially, E3 and deubiquitination enzymes are classified into classes and subclasses by their shared domains and unique functions. As a result, 42 different E3 enzymes were grouped into corresponding classes and subclasses, and 940 ubiquitinated substrates including mutant substrates were identified. All the enzyme and substrate information are interconnected by hyperlinks, which makes it easy to view the enzyme-specific ubiquitination information.
  
  
  CONCLUSIONS
  This database aims to represent a comprehensive yeast ubiquitination system, and is easily expandable with the further experimental data. We expect that this database will be useful for the research on the ubiquitination systems of other higher organisms. SCUD is accessible at http://scud.kaist.ac.kr.
authors.affiliation: Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea. cleariv@kaist.ac.kr
authors.forename: Won-Chul
authors.initials: WC
authors.lastname: Lee
authors.forename: Minho
authors.initials: M
authors.lastname: Lee
authors.forename: Jin Woo
authors.initials: JW
authors.lastname: Jung
authors.forename: Kwang Pyo
authors.initials: KP
authors.lastname: Kim
authors.forename: Dongsup
authors.initials: D
authors.lastname: Kim
mesh_terms: D030562:Databases, Protein; D012441:Saccharomyces cerevisiae / Q000201:enzymology* / Q000235:genetics; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics / Q000378:metabolism*; D043743:Ubiquitin-Protein Ligase Complexes / Q000235:genetics / Q000378:metabolism; D054875:Ubiquitination
chemical_list: D029701:Saccharomyces cerevisiae Proteins; D043743:Ubiquitin-Protein Ligase Complexes