Monoallelically expressed gene related to p53 at 1p36, a region frequently deleted in neuroblastoma and other human cancers

Cell. 1997 Aug 22;90(4):809-19. doi: 10.1016/s0092-8674(00)80540-1.


We describe a gene encoding p73, a protein that shares considerable homology with the tumor suppressor p53. p73 maps to 1p36, a region frequently deleted in neuroblastoma and other tumors and thought to contain multiple tumor suppressor genes. Our analysis of neuroblastoma cell lines with 1p and p73 loss of heterozygosity failed to detect coding sequence mutations in remaining p73 alleles. However, the demonstration that p73 is monoallelically expressed supports the notion that it is a candidate gene in neuroblastoma. p73 also has the potential to activate p53 target genes and to interact with p53. We propose that the disregulation of p73 contributes to tumorigenesis and that p53-related proteins operate in a network of developmental and cell cycle controls.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Alleles
  • Amino Acid Sequence
  • Cell Division / drug effects
  • Chromosome Mapping
  • Chromosomes, Human, Pair 1*
  • Cyclin-Dependent Kinase Inhibitor p21
  • Cyclins / biosynthesis
  • DNA-Binding Proteins / chemistry
  • DNA-Binding Proteins / genetics*
  • DNA-Binding Proteins / metabolism
  • DNA-Binding Proteins / radiation effects
  • Dactinomycin / pharmacology
  • Gene Deletion
  • Gene Expression*
  • Genes, Tumor Suppressor
  • Heterozygote
  • Humans
  • Molecular Sequence Data
  • Neuroblastoma / genetics*
  • Nuclear Proteins / chemistry
  • Nuclear Proteins / genetics*
  • Nuclear Proteins / metabolism
  • Nuclear Proteins / radiation effects
  • Protein Synthesis Inhibitors / pharmacology
  • Tumor Cells, Cultured
  • Tumor Protein p73
  • Tumor Suppressor Protein p53 / chemistry
  • Tumor Suppressor Protein p53 / genetics*
  • Tumor Suppressor Protein p53 / metabolism
  • Tumor Suppressor Proteins
  • Ultraviolet Rays


  • CDKN1A protein, human
  • Cyclin-Dependent Kinase Inhibitor p21
  • Cyclins
  • DNA-Binding Proteins
  • Nuclear Proteins
  • Protein Synthesis Inhibitors
  • TP73 protein, human
  • Tumor Protein p73
  • Tumor Suppressor Protein p53
  • Tumor Suppressor Proteins
  • Dactinomycin

Associated data

  • GENBANK/Y11416