The yeast shi mutation affects the spacing between the TATA promoter element and transcription initiation sites; for the H2B and ADH1 genes, a series of start sites located approximately 50-80 bp downstream of TATA is used in addition to the wild-type initiation sites located at around 100 bp from TATA (1). Here, the yeast SHI wild-type gene has been isolated by complementation and shown to be identical to RPB9, the gene encoding a small subunit of RNA polymerase II. A point mutation in the shi gene, changing a cysteine residue in a putative zinc ribbon motif into a phenylalanine residue, was demonstrated to permit the observed usage of upstream initiation sites. Deletion of the non-essential SHI gene also results in usage of upstream initiation sites and causes conditional growth defects.
|Evidence ID||Analyze ID||Interactor||Interactor Systematic Name||Interactor||Interactor Systematic Name||Type||Assay||Annotation||Action||Modification||Phenotype||Source||Reference||Note|
|Evidence ID||Analyze ID||Gene||Gene Systematic Name||Gene Ontology Term||Gene Ontology Term ID||Qualifier||Aspect||Method||Evidence||Source||Assigned On||Reference||Annotation Extension|
|Evidence ID||Analyze ID||Gene||Gene Systematic Name||Phenotype||Experiment Type||Experiment Type Category||Mutant Information||Strain Background||Chemical||Details||Reference|
|Evidence ID||Analyze ID||Regulator||Regulator Systematic Name||Target||Target Systematic Name||Experiment||Conditions||Strain||Source||Reference|