Previously swoA was identified in Aspergillus nidulans as a single locus, temperature-sensitive (ts) mutant aberrant in polarity maintenance. swoA was complemented by transformation with a plasmid genomic library. The sequence of the complementing gene was identical to a previously submitted GenBank sequence for pmtA, a protein O-mannosyltransferase. The pmtA/swoA-2 gene hybridized to three cosmids that are located on chromosome V and the swoA mutation was mitotically mapped to chromosome V. PMTs are endoplasmic reticulum-resident proteins responsible for the first step of O-glycosylation. Structural predictions suggest that PmtA contains seven membrane spans similar to PMTs from Saccharomyces cerevisiae and other organisms. Phylogenetic analysis indicates that PmtA is most closely related to the S. cerevisiae sub-family of PMTs containing Pmt2, Pmt3 and Pmt6. The mutant pmtA/swoA-2 locus contained a lesion that changed Y662 to a stop codon, eliminating the final membrane spanning domain and interrupting a domain essential for function in other PMTs.
|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|