Reference: Ambroziak J and Henry SA (1994) INO2 and INO4 gene products, positive regulators of phospholipid biosynthesis in Saccharomyces cerevisiae, form a complex that binds to the INO1 promoter. J Biol Chem 269(21):15344-9

Reference Help

Abstract


The INO4 gene encodes a protein required for derepression of a number of structural genes encoding enzymes involved in phospholipid biosynthesis in the yeast Saccharomyces cerevisiae. Ino4p shows structural similarity to the basic helix-loop-helix (bHLH) family of regulatory proteins (Hoshizaki, D. K., Hill, J. E., and Henry, S. A. (1990) J. Biol Chem. 265, 4736-4745). In this report we demonstrate that Ino4p translated in vitro forms a complex with Ino2p, another positive regulator of phospholipid biosynthesis that contains a bHLH domain. The Ino2p.Ino4p complex binds to a fragment of the INO1 promoter containing two copies of the consensus binding site for the bHLH family of proteins. The complex formed when this DNA fragment is incubated with in vitro translated Ino2p and Ino4p is identical in mobility to the complex formed when this DNA fragment is incubated with whole cell extracts. The binding of DNA by the Ino2p.Ino4p complex is competed by an oligonucleotide containing the consensus binding sequence for bHLH proteins. Neither Ino2p nor Ino4p translated alone is capable of forming a complex with the INO1 promoter fragment. The two products, translated separately and mixed, show only reduced capability to form a complex compared with cotranslated proteins. Immunoprecipitation experiments demonstrate that Ino2p and Ino4p interact in the absence of DNA. Ino2p and Ino4p are, thus, both necessary and sufficient for formation of a complex with the INO1 promoter.

Reference Type
Journal Article | Research Support, U.S. Gov't, P.H.S.
Authors
Ambroziak J, Henry SA
Primary Lit For
Additional Lit For
Review For

Gene Ontology Annotations


Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.

Gene/Complex Qualifier Gene Ontology Term Aspect Annotation Extension Evidence Method Source Assigned On Reference

Phenotype Annotations


Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small "i" buttons located within a cell for an annotation to view further details.

Gene Phenotype Experiment Type Mutant Information Strain Background Chemical Details Reference

Disease Annotations


Increase the total number of rows showing on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.

Gene Disease Ontology Term Qualifier Evidence Method Source Assigned On Reference

Regulation Annotations


Increase the total number of rows displayed on this page using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; to filter the table by a specific experiment type, type a keyword into the Filter box (for example, “microarray”); download this table as a .txt file using the Download button or click Analyze to further view and analyze the list of target genes using GO Term Finder, GO Slim Mapper, or SPELL.

Regulator Target Direction Regulation Of Happens During Method Evidence

Post-translational Modifications


Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through its pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.

Site Modification Modifier Reference

Interaction Annotations


Genetic Interactions

Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small "i" buttons located within a cell for an annotation to view further details about experiment type and any other genes involved in the interaction.

Interactor Interactor Allele Assay Annotation Action Phenotype SGA score P-value Source Reference

Physical Interactions

Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through the table's pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table; click on the small "i" buttons located within a cell for an annotation to view further details about experiment type and any other genes involved in the interaction.

Interactor Interactor Assay Annotation Action Modification Source Reference

Functional Complementation Annotations


Increase the total number of rows showing on this page by using the pull-down located below the table, or use the page scroll at the table's top right to browse through its pages; use the arrows to the right of a column header to sort by that column; filter the table using the "Filter" box at the top of the table.

Gene Species Gene ID Strain background Direction Details Source Reference