Journal: Methods and Protocols
Article Title: Quantitative Assessment of Histone H2B Monoubiquitination in Yeast Using Immunoblotting
doi: 10.3390/mps5050074
Figure Lengend Snippet: ( a ) Sections of membrane probed with the indicated antibodies to quantify histones H3 or H2B and H2BK123ub1 levels in wild-type (WT) and indicated deubiquitinase mutant S. cerevisiae strains. The antibody dilutions used are listed in . ( b ) Quantitation of histones H3 (i) and H2BK123ub1 (ii) levels normalized to Ponceau S stained proteins from two or three independent experiments, respectively. ( c ) Sections of membrane probed with anti-H2B antibody (1:1000 dilution) (upper), anti-ubiquityl H2BK120 antibody (1:1000) (middle), and stained with Ponceau S (lower) using extracts prepared from S. cerevisiae strains expressing untagged or C-terminal V5 epitope-tagged histone H2B.
Article Snippet: Unlike with the S. cerevisiae extracts ( and ), the anti-yeast histone H2B antibody (Active Motif; 1:1000) yielded high background or cross-reactivity when applied to the S. pombe extracts ( a, first panel).
Techniques: Membrane, Mutagenesis, Quantitation Assay, Staining, Expressing