Identification and characterization of RTVP1/GLIPR1-like genes, a novel p53 target gene cluster

Genomics. 2006 Aug;88(2):163-72. doi: 10.1016/j.ygeno.2006.03.021. Epub 2006 May 22.


Our previous finding of RTVP1 (GLIPR1) as a p53 target gene with tumor suppressor functions prompted us to initiate a genome-wide sequence homology search for RTVP1/GLIPR1-like (GLIPR1L) genes. In this study we report the identification and characterization of a novel p53 target gene cluster that includes human RTVP1 (hRTVP-1) together with two GLIPR1L genes (GLIPR1L1 and GLIPR1L2) on human chromosome 12q21 and mouse Rtvp1 (mRTVP-1 or Glipr1) together with three Glipr1-like (Glipr1l) genes on mouse chromosome 10D1. GLIPR1L1 has two and GLIPR1L2 has five differentially spliced isoforms. Protein homology search revealed that hRTVP-1 gene cluster members share a high degree of identity and homology. GLIPR1L1 is testis-specific, whereas GLIPR1L2 is expressed in different types of tissues, including prostate and bladder. Like hRTVP-1, GLIPR1L1 and GLIPR1L2 are p53 target genes. The similarities of these novel p53 target gene cluster members in protein structure and their association with p53 suggest that these genes may have similar biological functions.

Publication types

  • Comparative Study
  • Research Support, N.I.H., Extramural

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Chromosome Mapping
  • Chromosomes, Human, Pair 12
  • Humans
  • Male
  • Membrane Proteins
  • Mice
  • Models, Genetic
  • Molecular Sequence Data
  • Multigene Family*
  • Neoplasm Proteins / genetics*
  • Neoplasm Proteins / metabolism
  • Nerve Tissue Proteins / genetics*
  • Nerve Tissue Proteins / metabolism
  • Sequence Alignment
  • Sequence Homology
  • Species Specificity
  • Testis / cytology
  • Testis / metabolism
  • Tumor Suppressor Protein p53 / metabolism*


  • GLIPR1 protein, human
  • Membrane Proteins
  • Neoplasm Proteins
  • Nerve Tissue Proteins
  • Tumor Suppressor Protein p53