PURA
Transcriptional activator protein Pur-alpha
Also known as: PUR-ALPHA, PUR1, PURA_HUMAN, PURALPHA
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q00577
- Gene
- PURA
- Ensembl
- ENSG00000185129
- Chromosome
- 5
- Canonical length
- 322 aa
- Protein class
- Cancer-related genes, Disease related genes, Human disease related genes, Plasma proteins, Predicted intracellular proteins, Transcription factors
- Quaternary structure
- Homodimer
OverviewNCBI Gene
This gene product is a sequence-specific, single-stranded DNA-binding protein. It binds preferentially to the single strand of the purine-rich element termed PUR, which is present at origins of replication and in gene flanking regions in a variety of eukaryotes from yeasts through humans. Thus, it is implicated in the control of both DNA replication and transcription. Deletion of this gene has been associated with myelodysplastic syndrome and acute myelogenous leukemia. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
322 residues, UniProt reviewed canonical sequence.
>Q00577|PURA
1 MADRDSGSEQ GGAALGSGGS LGHPGSGSGS GGGGGGGGGG GGSGGGGGGA PGGLQHETQE
61 LASKRVDIQN KRFYLDVKQN AKGRFLKIAE VGAGGNKSRL TLSMSVAVEF RDYLGDFIEH
121 YAQLGPSQPP DLAQAQDEPR RALKSEFLVR ENRKYYMDLK ENQRGRFLRI RQTVNRGPGL
181 GSTQGQTIAL PAQGLIEFRD ALAKLIDDYG VEEEPAELPE GTSLTVDNKR FFFDVGSNKY
241 GVFMRVSEVK PTYRNSITVP YKVWAKFGHT FCKYSEEMKK IQEKQREKRA ACEQLHQQQQ
301 QQQEETAAAT LLLQGEEEGE EDLocalizationUniProt · AlphaFold · HPA
Whether an antibody against PURA can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Intracellular
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.45
- Highest tissue expression
- 13 nTPM
Expression across tissuesHPA
Tissue
- parathyroid gland: 13 nTPM
- cerebral cortex: 12 nTPM
- retina: 12 nTPM
- kidney: 11 nTPM
- thyroid gland: 11 nTPM
- spinal cord: 9.7 nTPM
Single-cell type
- somatotrophs: 279 nCPM
- lactotrophs: 247 nCPM
- thyrotrophs: 223 nCPM
- corticotrophs: 195 nCPM
- smooth muscle cells: 167 nCPM
- gonadotrophs: 156 nCPM
Immune cell
- basophil: 6.4 nTPM
- NK-cell: 5.2 nTPM
- naive B-cell: 3.7 nTPM
- eosinophil: 3.4 nTPM
- naive CD8 T-cell: 3.4 nTPM
- memory CD8 T-cell: 3.2 nTPM
Brain region
- amygdala: 140 nTPM
- thalamus: 137 nTPM
- medulla oblongata: 131 nTPM
- spinal cord: 131 nTPM
- white matter: 130 nTPM
- pons: 128 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about PURA.
Disease | AllUniProt
Conditions PURA is implicated in, by any mechanism.
- Neurodevelopmental disorder with neonatal respiratory insufficiency, hypotonia, and feeding difficulties (NEDRIHF) MIM:616158
Disease | GeneticClinVar
220 pathogenic / likely-pathogenic of 628 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- PURA-related severe neonatal hypotonia-seizures-encephalopathy syndrome
- Inborn genetic diseases
- Intellectual disability
- Neonatal hypotonia
- Delayed speech and language development
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.34
- gnomAD pLI
- 0.94
- gnomAD missense Z
- 3.37
- DepMap mean gene effect
- -0.04
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- dendritic transport of messenger ribonucleoprotein complex
- DNA replication initiation
- epithelial cell proliferation
- lymphocyte proliferation
- negative regulation of transcription by RNA polymerase II
- nervous system development
- positive regulation of cell population proliferation
- regulation of transcription by RNA polymerase II
Molecular functions
- DNA-binding transcription factor activity, RNA polymerase II-specific
- DNA-binding transcription factor binding
- DNA-binding transcription repressor activity, RNA polymerase II-specific
- double-stranded telomeric DNA binding
- mRNA regulatory element binding translation repressor activity
- purine-rich negative regulatory element binding
- RNA binding
- RNA polymerase II transcription regulatory region sequence-specific DNA binding
- single-stranded DNA binding
- SMAD binding
- transcription regulator inhibitor activity
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of PURA in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads PURA as an antibody target. Whether an autoantibody or antibody against PURA could matter depends on whether native PURA is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
PURA is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.
Annotation status
The present source text does not explicitly label PURA as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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