GCN4 protein (Saccharomyces cerevisiae) - STRING interaction network
"GCN4" - bZIP transcriptional activator of amino acid biosynthetic genes in Saccharomyces cerevisiae
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Predicted Interactions
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GCN4bZIP transcriptional activator of amino acid biosynthetic genes; activator responds to amino acid starvation; expression is tightly regulated at both the transcriptional and translational levels; Is a transcription factor that is responsible for the activation of more than 30 genes required for amino acid or for purine biosynthesis in response to amino acid or purine starvation. Binds and recognize the DNA sequence- 5’-TGA[CG]TCA- 3’ (281 aa)    
Predicted Functional Partners:
Protein kinase, phosphorylates the alpha-subunit of translation initiation factor eIF2 (Sui2p) in response to starvation; activated by uncharged tRNAs and the Gcn1p-Gcn20p complex; contributes to DNA damage checkpoint control; Metabolic-stress sensing protein kinase that phosphorylates the alpha subunit of eukaryotic translation initiation factor 2 (eIF-2-alpha/SUI2) on ’Ser-52’ in response to low amino acid availability (PubMed-1739968, PubMed-7623840, PubMed-8798780, PubMed-9528799, PubMed-10983975, PubMed-17202131). Plays a role as an activator of the general amino acid control (GAA [...] (1659 aa)
Basic leucine zipper transcription factor of the ATF/CREB family; forms a complex with Tup1p and Cyc8p to both activate and repress transcription; cytosolic and nuclear protein involved in osmotic and oxidative stress responses; Binds to the CRE motif 5’-TGACGTCA-3’ and acts as a repressor of transcription of the SUC2 gene and most probably other genes (647 aa)
Subunit of the RNA polymerase II mediator complex; associates with core polymerase subunits to form the RNA polymerase II holoenzyme; affects transcription by acting as target of activators and repressors; forms part of the tail domain of mediator; Component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. The Mediator complex, having a compact conformation in it [...] (1081 aa)
TATA-binding protein, general transcription factor that interacts with other factors to form the preinitiation complex at promoters, essential for viability; General transcription factor that functions at the core of the DNA-binding general transcription factor complex TFIID. Binding of TFIID to a promoter (with or without TATA element) is the initial step in preinitiation complex (PIC) formation. TFIID plays a key role in the regulation of gene expression by RNA polymerase II through different activities such as transcription activator interaction, core promoter recognition and select [...] (240 aa)
Basic leucine zipper (bZIP) transcription factor of the ATF/CREB family, proposed to be a regulator of oleate responsive genes; involved in utilization of non-optimal carbon sources and chromosome stability; Transcriptional activator of promoters containing ATF/CREB sites. Can independently stimulate transcription through ATF/CREB sites. Important for a variety of biological functions including growth on non-optimal carbon sources (587 aa)
Basic leucine zipper (bZIP) transcription factor of the ATF/CREB family, may regulate transcription of genes involved in utilization of non-optimal carbon sources; Transcriptional activator of promoters containing ATF/CREB sites. Can independently stimulate transcription through ATF/CREB sites. Important for a variety of biological functions including growth on non-optimal carbon sources. Regulates the expression of COS8. Has efficient silencing blocking activities (489 aa)
Transcription factor TFIIB, a general transcription factor required for transcription initiation and start site selection by RNA polymerase II; General factor that plays a major role in the activation of eukaryotic genes transcribed by RNA polymerase II (345 aa)
Alpha subunit of the translation initiation factor eIF2B, the guanine-nucleotide exchange factor for eIF2; activity subsequently regulated by phosphorylated eIF2; first identified as a positive regulator of GCN4 expression; Acts as a non-essential regulatory component of the translation initiation factor 2B (eIF2-B or GCD complex), which catalyzes the exchange of eukaryotic initiation factor 2 (eIF-2)- bound GDP for GTP and is regulated by phosphorylated eIF-2. It activates the synthesis of GCN4 in yeast under amino acid starvation conditions by suppressing the inhibitory effects of mu [...] (305 aa)
Multifunctional enzyme containing phosphoribosyl-ATP pyrophosphatase, phosphoribosyl-AMP cyclohydrolase, and histidinol dehydrogenase activities; catalyzes the second, third, ninth and tenth steps in histidine biosynthesis (799 aa)
Myb-related transcription factor involved in regulating basal and induced expression of genes of the purine and histidine biosynthesis pathways; also involved in regulation of meiotic recombination at specific genes; Activates HIS4 transcription only in combination with PHO2/BAS2. BAS1 is also involved in the regulation of the purine biosynthesis pathway (811 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
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