title: Selenomethionine incorporation in Saccharomyces cerevisiae RNA polymerase II.
abstract: A protocol for the incorporation of SeMet into yeast proteins is described. Incorporation at a level of about 50% suffices for the location of Se sites in an anomalous difference Fourier map of the 0.5 MDa yeast RNA polymerase II. This shows the utility of the approach as an aid in the model-building of large protein complexes.
authors.affiliation: Department of Structural Biology, Stanford University School of Medicine, Stanford, CA 94305, USA.
authors.forename: D A
authors.initials: DA
authors.lastname: Bushnell
authors.forename: P
authors.initials: P
authors.lastname: Cramer
authors.forename: R D
authors.initials: RD
authors.lastname: Kornberg
mesh_terms: D001665:Binding Sites; D001671:Biochemistry / Q000379:methods; D002455:Cell Division; D008715:Methionine / Q000494:pharmacology; D008958:Models, Molecular; D011485:Protein Binding; D012319:RNA Polymerase II / Q000737:chemistry*; D012441:Saccharomyces cerevisiae / Q000201:enzymology*; D012643:Selenium / Q000737:chemistry; D012645:Selenomethionine / Q000737:chemistry*
chemical_list: D012645:Selenomethionine; D008715:Methionine; D012319:RNA Polymerase II; D012643:Selenium