INO4 protein (Saccharomyces cerevisiae) - STRING interaction network
"INO4" - Transcription factor required for derepression of inositol-choline-regulated genes involved in phospholipid synthesis in Saccharomyces cerevisiae
Network nodes represent proteins
splice isoforms or post-translational modifications are collapsed, i.e. each node represents all the proteins produced by a single, protein-coding gene locus.
Node Color
colored nodes:
query proteins and first shell of interactors
white nodes:
second shell of interactors
Node Content
empty nodes:
proteins of unknown 3D structure
filled nodes:
some 3D structure is known or predicted
Edges represent protein-protein associations
associations are meant to be specific and meaningful, i.e. proteins jointly contribute to a shared function; this does not necessarily mean they are physically binding each other.
Known Interactions
from curated databases
experimentally determined
Predicted Interactions
gene neighborhood
gene fusions
gene co-occurrence
protein homology
Your Input:
Gene Fusion
INO4Transcription factor required for derepression of inositol-choline-regulated genes involved in phospholipid synthesis; forms a complex, with Ino2p, that binds the inositol-choline-responsive element through a basic helix-loop-helix domain; Transcriptional activator of phospholipid synthetic genes (such as INO1, CHO1/PSS, CHO2/PEM1, OPI3/PEM2, etc.) (151 aa)    
Predicted Functional Partners:
Component of the heteromeric Ino2p/Ino4p basic helix-loop-helix transcription activator that binds inositol/choline-responsive elements (ICREs), required for derepression of phospholipid biosynthetic genes in response to inositol depletion; Positive regulatory factor required for depression of the coregulated phospholipid biosynthetic enzymes. Also involved in the expression of ITR1 (304 aa)
Transcriptional regulator of a variety of genes; phosphorylation by protein kinase A stimulates Opi1p function in negative regulation of phospholipid biosynthetic genes; involved in telomere maintenance; Negative regulator of the transcriptional complex INO2- INO4 in response to phospholipid precursor availability. When precursors become limiting, OPI1 is retained at the endoplasmic reticulum (ER) and INO2-INO4 activates INO1 and other genes required for phospholipid biosynthesis, whereas abundant precursor availability results in targeting of OPI1 to the nucleus to repress transcripti [...] (404 aa)
Inositol-3-phosphate synthase, involved in synthesis of inositol phosphates and inositol-containing phospholipids; transcription is coregulated with other phospholipid biosynthetic genes by Ino2p and Ino4p, which bind the UASINO DNA element (533 aa)
Phosphatidylserine synthase, functions in phospholipid biosynthesis; catalyzes the reaction CDP-diaclyglycerol + L-serine = CMP + L-1-phosphatidylserine, transcriptionally repressed by myo-inositol and choline (276 aa)
Phospholipid methyltransferase (methylene-fatty-acyl-phospholipid synthase), catalyzes the last two steps in phosphatidylcholine biosynthesis; Catalyzes three sequential methylation reactions of phosphatidylethanolamine (PE) by AdoMet, thereby producing phosphatidylcholine (PC) (206 aa)
Phosphatidylethanolamine methyltransferase (PEMT), catalyzes the first step in the conversion of phosphatidylethanolamine to phosphatidylcholine during the methylation pathway of phosphatidylcholine biosynthesis; Catalyzes the first step in the conversion of phosphatidylethanolamine to phosphatidylcholine during the methylation pathway of phosphatidylcholine biosynthesis. Preferentially converts di-C16-1 substrates (869 aa)
Serine-rich protein that contains a basic-helix-loop-helix (bHLH) DNA binding motif; binds E-boxes of glycolytic genes and contributes to their activation; may function as a transcriptional activator in Ty1-mediated gene expression; Transcriptional activator of glycolytic gene expression, such as enolase genes (ENO1 and ENO2), glyceraldehyde-3-phosphate dehydrogenase gene (TDH), phosphoglycerate kinase (PGK1), phosphoglycerate mutase (PGM1), pyruvate kinase (PYK1) and triosephosphate isomerase (TPI1) genes. Binds DNA on E-box motifs- 5’-CANNTG-3’ (291 aa)
Basic helix-loop-helix (bHLH) transcription factor of the myc-family; activates transcription cooperatively with Pho2p in response to phosphate limitation; binding to ’CACGTG’ motif is regulated by chromatin restriction, competitive binding of Cbf1p to the same DNA binding motif and cooperation with Pho2p; function is regulated by phosphorylation at multiple sites and by phosphate availability; Transcriptional activator that regulates the expression of repressible phosphatase under phosphate starvation conditions. Binds to the upstream activating sequence (UAS) of several phosphatase e [...] (312 aa)
Epoxide hydrolase, member of the alpha/beta hydrolase fold family; may have a role in detoxification of epoxides (290 aa)
Transcription factor (bHLH) involved in interorganelle communication between mitochondria, peroxisomes, and nucleus; Required for a novel path of interorganelle communication between mitochondria, peroxisomes and the nucleus, thereby maintaining a functional metabolic interaction between the tricarboxylic acid and glyoxylate cycles. Transcription factor that regulates CIT2 gene expression. Binds to two identical sites oriented as inverted repeats 28 bp apart in a regulatory upstream activation sequence element (UASR) in the CIT2 promoter. The core binding site is 5’-GGTCAC-3’ (177 aa)
Your Current Organism:
Saccharomyces cerevisiae
NCBI taxonomy Id: 4932
Other names: Candida robusta, Pachytichospora, S. cerevisiae, Saccharomyces, Saccharomyces capensis, Saccharomyces cerevisiae, Saccharomyces italicus, Saccharomyces oviformis, Saccharomyces uvarum var. melibiosus, lager beer yeast, yeast
Server load: low (2%) [HD]