title: A novel member of the split betaalphabeta fold: Solution structure of the hypothetical protein YML108W from Saccharomyces cerevisiae.
abstract: As part of the Northeast Structural Genomics Consortium pilot project focused on small eukaryotic proteins and protein domains, we have determined the NMR structure of the protein encoded by ORF YML108W from Saccharomyces cerevisiae. YML108W belongs to one of the numerous structural proteomics targets whose biological function is unknown. Moreover, this protein does not have sequence similarity to any other protein. The NMR structure of YML108W consists of a four-stranded beta-sheet with strand order 2143 and two alpha-helices, with an overall topology of betabetaalphabetabetaalpha. Strand beta1 runs parallel to beta4, and beta2:beta1 and beta4:beta3 pairs are arranged in an antiparallel fashion. Although this fold belongs to the split betaalphabeta family, it appears to be unique among this family; it is a novel arrangement of secondary structure, thereby expanding the universe of protein folds.
authors.affiliation: Division of Molecular and Structural Biology, Ontario Cancer Institute and University of Toronto, Toronto, Ontario M5G 2M9, Canada.
authors.forename: Antonio
authors.initials: A
authors.lastname: Pineda-Lucena
authors.forename: Jack C C
authors.initials: JC
authors.lastname: Liao
authors.forename: John R
authors.initials: JR
authors.lastname: Cort
authors.forename: Adelinda
authors.initials: A
authors.lastname: Yee
authors.forename: Michael A
authors.initials: MA
authors.lastname: Kennedy
authors.forename: Aled M
authors.initials: AM
authors.lastname: Edwards
authors.forename: Cheryl H
authors.initials: CH
authors.lastname: Arrowsmith
mesh_terms: D019906:Nuclear Magnetic Resonance, Biomolecular; D017510:Protein Folding; D017433:Protein Structure, Secondary; D029701:Saccharomyces cerevisiae Proteins / Q000737:chemistry*; D012996:Solutions
chemical_list: D029701:Saccharomyces cerevisiae Proteins; D012996:Solutions