Cloning and tissue distribution of a novel P2X receptor from rat brain

Biochem Biophys Res Commun. 1996 Jun 14;223(2):456-60. doi: 10.1006/bbrc.1996.0915.


We have isolated the cDNA for a novel member (P2X6) of the ATP-gated ion channel family. The rat P2X6 nucleotide sequence encodes a 379 amino acid protein that conserves all the structural features of previously cloned P2X receptors, including the two putative transmembrane domains predicted by hydrophobicity plots. In situ hybridization analysis of rat brain sections showed a wide pattern of mRNA expression that is virtually identical to that already described for P2X4. Injection of P2X6 cRNA in Xenopus oocytes did not give rise to ATP-activated channels. Coexpression of P2X6 with P2X4 subunits produced currents which were not discernibly different from those of P2X4 expressed alone.

Publication types

  • Comparative Study

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Base Sequence
  • Brain / metabolism*
  • Cloning, Molecular
  • Conserved Sequence
  • DNA Primers
  • DNA, Complementary
  • Female
  • In Situ Hybridization
  • Molecular Sequence Data
  • Oocytes / physiology
  • Organ Specificity
  • Patch-Clamp Techniques
  • Polymerase Chain Reaction
  • Rats
  • Receptors, Purinergic P2 / analysis
  • Receptors, Purinergic P2 / biosynthesis*
  • Receptors, Purinergic P2 / chemistry
  • Recombinant Proteins / analysis
  • Recombinant Proteins / chemistry
  • Recombinant Proteins / metabolism
  • Sensitivity and Specificity
  • Sequence Homology, Amino Acid
  • Xenopus


  • DNA Primers
  • DNA, Complementary
  • Receptors, Purinergic P2
  • Recombinant Proteins

Associated data

  • GENBANK/X97376