Purb purine rich element binding protein B [Mus musculus (house mouse)] - Gene

Summary

Official Symbol: Purbprovided by MGI
Official Full Name: purine rich element binding protein Bprovided by MGI
Primary source: MGI:MGI:1338779
See related: Ensembl:ENSMUSG00000094483 AllianceGenome:MGI:1338779
Gene type: protein coding
RefSeq status: VALIDATED
Organism: Mus musculus
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Mus; Mus
Also known as: Cager-2; D11Bwg0414e; 2310015K15Rik
Summary: Enables several functions, including DNA-binding transcription repressor activity, RNA polymerase II-specific; SMAD binding activity; and nucleic acid binding activity. Involved in negative regulation of transcription by RNA polymerase II and positive regulation of transcription by RNA polymerase II. Acts upstream of or within negative regulation of DNA-templated transcription. Located in nucleus. Is expressed in heart and hindlimb muscle. Orthologous to human PURB (purine rich element binding protein B). [provided by Alliance of Genome Resources, Dec 2024]
Orthologs: human all
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Genomic context

Location:: 11 A1; 11 4.16 cM

Exon count:: 1

Annotation release	Status	Assembly	Chr	Location
RS_2024_02	current	GRCm39 (GCF_000001635.27)	11	NC_000077.7 (6417599..6426076, complement)
108.20200622	previous assembly	GRCm38.p6 (GCF_000001635.26)	11	NC_000077.6 (6467599..6476076, complement)

Chromosome 11 - NC_000077.7 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

Aromatic Residues Dictate the Transcriptional Repressor and Single-Stranded DNA Binding Activities of Purine-Rich Element Binding Protein B.
Title: Aromatic Residues Dictate the Transcriptional Repressor and Single-Stranded DNA Binding Activities of Purine-Rich Element Binding Protein B.
Circ-calm4 regulates hypoxia-induced pulmonary artery smooth muscle autophagy by binding Purb.
Title: Circ-calm4 regulates hypoxia-induced pulmonary artery smooth muscle autophagy by binding Purb.
Purbeta promotes hepatic glucose production by increasing Adcy6 transcription.
Title: Purβ promotes hepatic glucose production by increasing Adcy6 transcription.
site-directed mutagenesis revealed several basic amino acid residues in the intermolecular (R267) and intramolecular (K82 and R159) subdomains that are essential for Purbeta transcriptional repressor function in Acta2 promoter-reporter assays. In keeping with their diminished Acta2 repressor activity in fibroblasts, purified Purbeta variants containing an R267A mutation exhibited reduced binding affinity for purine-ric...
Title: Electrostatic and Hydrophobic Interactions Mediate Single-Stranded DNA Recognition and Acta2 Repression by Purine-Rich Element-Binding Protein B.
This structural arrangement suggests that the cooperative assembly of the dimeric Purbeta repressor on the sense strand of the ACTA2 enhancer is dictated by the association of each subdomain with distinct purine-rich binding sites within the enhancer.
Title: Structural basis of multisite single-stranded DNA recognition and ACTA2 repression by purine-rich element binding protein B (Purβ).
These findings suggest that the highly conserved modular repeats of Purbeta fold to form a core functional domain, which mediates the specific and high affinity binding of the protein to single-stranded DNA.
Title: Isolation and characterization of the core single-stranded DNA-binding domain of purine-rich element binding protein B (Purβ).
Overexpression of Purbeta, but not Puralpha, significantly downregulated GnRH1 mRNA levels in transiently transfected GT1-7 cells, suggesting that Purbeta acts as a repressor of GnRH1 gene transcription.
Title: Regulation of gonadotropin-releasing hormone-1 gene transcription by members of the purine-rich element-binding protein family.
Activation of the normally silent SM alpha A gene in reprogrammed adult cardiomyocytes is linked to elevated interaction of serum response factor with Pur-alpha/Pur-beta.
Title: Serum response factor neutralizes Pur alpha- and Pur beta-mediated repression of the fetal vascular smooth muscle alpha-actin gene in stressed adult cardiomyocytes.
structural role for certain core arginine residues in forming a conformationally stable Pur beta protein capable of physical interactions necessary for smooth muscle alpha-actin gene repression.
Title: Structure-function analysis of mouse Pur beta II. Conformation altering mutations disrupt single-stranded DNA and protein interactions crucial to smooth muscle alpha-actin gene repression.
These data demonstrate that Pur proteins collaborate with Sp3 to regulate a transcriptional program that enables muscle cells to remodel their phenotype.
Title: Puralpha and Purbeta collaborate with Sp3 to negatively regulate beta-myosin heavy chain gene expression during skeletal muscle inactivity.

Submit: New GeneRIF Correction See all GeneRIFs (14)

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

D11Bwg0414e (e-PCR), detects polymorphism
- UniSTS:141717

BI282072 (e-PCR)
- UniSTS:249750

NoName (e-PCR)
- UniSTS:236517

AA859841 (e-PCR)
- UniSTS:243947

Gene Ontology Provided by MGI

Function	Evidence Code	Pubs
enables DNA-binding transcription factor activity	IDA Inferred from Direct Assay more info	PubMed
enables DNA-binding transcription factor activity, RNA polymerase II-specific	IBA Inferred from Biological aspect of Ancestor more info
enables DNA-binding transcription factor binding	IPI Inferred from Physical Interaction more info	PubMed
enables DNA-binding transcription repressor activity, RNA polymerase II-specific	IDA Inferred from Direct Assay more info	PubMed
enables DNA-binding transcription repressor activity, RNA polymerase II-specific	IMP Inferred from Mutant Phenotype more info	PubMed
enables RNA binding	IDA Inferred from Direct Assay more info	PubMed
enables RNA polymerase II transcription regulatory region sequence-specific DNA binding	IBA Inferred from Biological aspect of Ancestor more info
enables RNA polymerase II transcription regulatory region sequence-specific DNA binding	IDA Inferred from Direct Assay more info	PubMed
enables SMAD binding	IDA Inferred from Direct Assay more info	PubMed
enables double-stranded DNA binding	IDA Inferred from Direct Assay more info	PubMed
enables double-stranded telomeric DNA binding	ISS Inferred from Sequence or Structural Similarity more info
enables mRNA binding	IDA Inferred from Direct Assay more info	PubMed
enables mRNA regulatory element binding translation repressor activity	ISO Inferred from Sequence Orthology more info
enables protein binding	IPI Inferred from Physical Interaction more info	PubMed
enables purine-rich negative regulatory element binding	IBA Inferred from Biological aspect of Ancestor more info
enables purine-rich negative regulatory element binding	IEA Inferred from Electronic Annotation more info
enables purine-rich negative regulatory element binding	ISO Inferred from Sequence Orthology more info
enables single-stranded DNA binding	IDA Inferred from Direct Assay more info	PubMed
enables single-stranded DNA binding	ISO Inferred from Sequence Orthology more info

Process	Evidence Code	Pubs
involved_in DNA unwinding involved in DNA replication	ISS Inferred from Sequence or Structural Similarity more info
acts_upstream_of_or_within negative regulation of DNA-templated transcription	IDA Inferred from Direct Assay more info	PubMed
involved_in negative regulation of DNA-templated transcription	ISO Inferred from Sequence Orthology more info
involved_in negative regulation of transcription by RNA polymerase II	IDA Inferred from Direct Assay more info	PubMed
acts_upstream_of_or_within negative regulation of transcription by RNA polymerase II	IGI Inferred from Genetic Interaction more info	PubMed
involved_in positive regulation of transcription by RNA polymerase II	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in regulation of transcription by RNA polymerase II	IBA Inferred from Biological aspect of Ancestor more info

Component	Evidence Code	Pubs
located_in nucleoplasm	IEA Inferred from Electronic Annotation more info
located_in nucleoplasm	ISO Inferred from Sequence Orthology more info
is_active_in nucleus	IBA Inferred from Biological aspect of Ancestor more info
located_in nucleus	IDA Inferred from Direct Assay more info	PubMed
located_in nucleus	ISO Inferred from Sequence Orthology more info
located_in nucleus	ISS Inferred from Sequence or Structural Similarity more info

General protein information

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Preferred Names: transcriptional regulator protein Pur-beta

Names: PurB beta; purine-rich single-stranded DNA-binding protein beta; transcriptional activator protein Pur-beta; vascular actin single-stranded DNA-binding factor 2 p44 component

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_011221.3 → NP_035351.1 transcriptional regulator protein Pur-beta

See identical proteins and their annotated locations for NP_035351.1

Status: VALIDATED

Source sequence(s)

AL646020

Consensus CDS

CCDS24420.1

UniProtKB/Swiss-Prot

O35295

Related

ENSMUSP00000136957.2, ENSMUST00000179343.3

Conserved Domains (2) summary

smart00712
Location:45 → 107

PUR; DNA/RNA-binding repeats in PUR-alpha/beta/gamma and in hypothetical proteins from spirochetes and the Bacteroides-Cytophaga-Flexibacter bacteria

pfam04845
Location:43 → 291

PurA; PurA ssDNA and RNA-binding protein