PROX1

Prospero homeobox protein 1 is a protein that in humans is encoded by the PROX1 gene.^[5][6] The Prox1 gene is critical for the development of multiple tissues. Prox1 activity is necessary and sufficient to specify a lymphatic endothelial cell fate in endothelial progenitors located in the embryonic veins.^[7]

PROX1
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 2LMD
Identifiers
Aliases	PROX1, prospero homeobox 1
External IDs	OMIM: 601546; MGI: 97772; HomoloGene: 2069; GeneCards: PROX1; OMA:PROX1 - orthologs
Gene location (Human) Chr. Chromosome 1 (human)[1] Band 1q32.3 Start 213,983,181 bp[1] End 214,041,510 bp[1]
Gene location (Mouse) Chr. Chromosome 1 (mouse)[2] Band 1 H6|1 95.85 cM Start 189,850,232 bp[2] End 189,902,911 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in sural nerve liver right lobe of liver right ventricle buccal mucosa cell corpus callosum biceps brachii islet of Langerhans Skeletal muscle tissue of biceps brachii body of pancreas Top expressed in lens neural layer of retina dentate gyrus of hippocampal formation granule cell subthalamus atrioventricular valve nucleus reuniens lumbar subsegment of spinal cord Rostral migratory stream white matter aortic valve More reference expression data BioGPS More reference expression data
Gene ontology Molecular function DNA binding sequence-specific DNA binding transcription corepressor activity DNA binding domain binding DNA-binding transcription factor activity LBD domain binding DNA-binding transcription repressor activity, RNA polymerase II-specific core promoter sequence-specific DNA binding protein binding nuclear receptor binding transcription factor activity, RNA polymerase II distal enhancer sequence-specific binding DNA-binding transcription factor activity, RNA polymerase II-specific RNA polymerase II cis-regulatory region sequence-specific DNA binding Cellular component cytoplasm nucleus Biological process dorsal spinal cord development olfactory placode formation regulation of transcription, DNA-templated positive regulation of endothelial cell proliferation venous blood vessel morphogenesis kidney development lymphangiogenesis lung development dentate gyrus development rhythmic process ventricular septum morphogenesis cardiac muscle cell differentiation lymphatic endothelial cell differentiation positive regulation of sarcomere organization positive regulation of forebrain neuron differentiation endocardium formation hepatocyte differentiation negative regulation of transcription by RNA polymerase II negative regulation of DNA-binding transcription factor activity lymph vessel development hepatocyte cell migration transcription, DNA-templated lens placode formation involved in camera-type eye formation skeletal muscle thin filament assembly neuronal stem cell population maintenance positive regulation of endothelial cell migration positive regulation of transcription, DNA-templated positive regulation of heart growth ventricular cardiac muscle tissue morphogenesis positive regulation of neural precursor cell proliferation retina morphogenesis in camera-type eye multicellular organism development negative regulation of viral genome replication brain development branching involved in pancreas morphogenesis positive regulation of cell cycle lens development in camera-type eye response to nutrient levels hepatocyte proliferation positive regulation of cell cycle checkpoint regulation of circadian rhythm circadian rhythm acinar cell differentiation neural tube development neuron differentiation positive regulation of cell population proliferation lens morphogenesis in camera-type eye positive regulation of cyclin-dependent protein serine/threonine kinase activity negative regulation of bile acid biosynthetic process embryonic retina morphogenesis in camera-type eye regulation of gene expression cell fate determination pancreas development liver development atrial cardiac muscle tissue morphogenesis endothelial cell differentiation inner ear development negative regulation of transcription, DNA-templated ventricular cardiac myofibril assembly otic placode formation aorta smooth muscle tissue morphogenesis cerebellar granule cell differentiation negative regulation of cell population proliferation positive regulation of transcription by RNA polymerase II lens fiber cell morphogenesis Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 5629 19130 Ensembl ENSG00000117707 ENSMUSG00000010175 UniProt Q92786 P48437 RefSeq (mRNA) NM_001270616 NM_002763 NM_008937 NM_001360827 RefSeq (protein) NP_001257545 NP_002754 NP_032963 NP_001347756 Location (UCSC) Chr 1: 213.98 – 214.04 Mb Chr 1: 189.85 – 189.9 Mb PubMed search [3] [4]
Wikidata
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Interactions

PROX1 has been shown to interact with EP300.^[8]

Production

PROX1 is produced primarily in the dentate gyrus in the mouse, and in the dentate gyrus and white matter in humans. Gene expression data for mouse, human and macaque from the Allen Brain Atlases can be found here.

Clinical significance

PROX1 is used as a marker for lymphatic endothelium in biopsy samples.

Homologous gene

PROX2