HAP4 transcription factor HAP4 [Saccharomyces cerevisiae S288C] - Gene

Summary

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Official Symbol: HAP4
Official Full Name: transcription factor HAP4
Primary source: SGD:S000001592
Locus tag: YKL109W
See related: AllianceGenome:SGD:S000001592; FungiDB:YKL109W; VEuPathDB:YKL109W
Gene type: protein coding
RefSeq status: REVIEWED
Organism: Saccharomyces cerevisiae S288C (strain: S288C)
Lineage: Eukaryota; Fungi; Dikarya; Ascomycota; Saccharomycotina; Saccharomycetes; Saccharomycetales; Saccharomycetaceae; Saccharomyces
Summary: Enables RNA polymerase II-specific DNA-binding transcription factor binding activity and transcription coactivator activity. Involved in carbon catabolite activation of transcription from RNA polymerase II promoter and regulation of cellular respiration. Part of CCAAT-binding activity factor complex. [provided by Alliance of Genome Resources, Dec 2024]
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Genomic context

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See HAP4 in Genome Data Viewer

Location:: chromosome: XI

Exon count:: 1

Sequence:: Chromosome: XI; NC_001143.9 (232227..233891)

Chromosome XI - NC_001143.9 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:: NC_001143.9

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Inactivation of HAP4 Accelerates RTG-Dependent Osmoadaptation in Saccharomyces cerevisiae.
Title: Inactivation of HAP4 Accelerates RTG-Dependent Osmoadaptation in Saccharomyces cerevisiae.
placed in an evolutionary context, raise new questions concerning the evolution of the HAP4 transcriptional regulation function and suggest that Yap1 and Hap4 have diverged from a unique regulatory protein in the fungal ancestor.
Title: Functional study of the Hap4-like genes suggests that the key regulators of carbon metabolism HAP4 and oxidative stress response YAP1 in yeast diverged from a common ancestor.
SAK1 overexpression had a greater impact on growth rates than did HAP4 overexpression. Elevated transcript levels of SAK1, but not HAP4, resulted in increased biomass yields in batch cultures grown on glucose as well as on nonfermentable carbon sources.
Title: Shifting the fermentative/oxidative balance in Saccharomyces cerevisiae by transcriptional deregulation of Snf1 via overexpression of the upstream activating kinase Sak1p.
Hap4, Cat8 and Mig1 activities are not affected by different glucose concentrations in this respirator y yeast strain.
Title: Transcriptome analysis of a respiratory Saccharomyces cerevisiae strain suggests the expression of its phenotype is glucose insensitive and predominantly controlled by Hap4, Cat8 and Mig1.
Overproduction of Hap4p behaved similar to the wild-type strain, deletion of hxk2 resulted in a very different fermentative capacity profile.
Title: Effect of hxk2 deletion and HAP4 overexpression on fermentative capacity in Saccharomyces cerevisiae.
Results show that Hap4p is able to partially compensate for the respiratory deficiency caused by OXA1 gene deletion.
Title: The transcriptional activator HAP4 is a high copy suppressor of an oxa1 yeast mutation.
Hap4 is not essential for activation of respiration at low specific growth rates in Saccharomyces cerevisiae
Title: Hap4 is not essential for activation of respiration at low specific growth rates in Saccharomyces cerevisiae.

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Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Homology

Orthologs from OrthoDB

Gene Ontology Provided by SGD

Function	Evidence Code	Pubs
enables DNA binding	IEA Inferred from Electronic Annotation more info
enables RNA polymerase II-specific DNA-binding transcription factor binding	IDA Inferred from Direct Assay more info	PubMed
enables RNA polymerase II-specific DNA-binding transcription factor binding	IPI Inferred from Physical Interaction more info	PubMed
enables transcription coactivator activity	IMP Inferred from Mutant Phenotype more info	PubMed

Process	Evidence Code	Pubs
involved_in positive regulation of transcription by RNA polymerase II	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in regulation of DNA-templated transcription	IEA Inferred from Electronic Annotation more info
involved_in regulation of cellular respiration	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
part_of CCAAT-binding factor complex	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	IEA Inferred from Electronic Annotation more info

General protein information

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Preferred Names: transcription factor HAP4

NP_012813.1

Transcription factor; subunit of the heme-activated, glucose-repressed Hap2p/3p/4p/5p CCAAT-binding complex, a transcriptional activator and global regulator of respiratory gene expression; provides the principal activation function of the complex; involved in diauxic shift